Safety Instructions & Operator's Manual for
21” VARIABLE SPEED
REAR DISCHARGE
WALK BEHIND
MOWERS
Models
SPVH21675 (7800441)
NSPVH21675 (7800449)
NOTE: Specifications are correct at time of printing and are subject to change without notice.
* Actual sustained engine power will likely be lower due to operating limitations and environmental factors. Please refer to ‘Engine Power Rating Information’ for
further details.
Manual No. 7102869 (Rev. ‘-’, 10/22/2008)
TP10009165
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Table of Contents
Operator Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Important Operator Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Features and Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Pre-Start Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Starting & Stopping Engine & Blade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Propelling Mower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Handle Height Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Cutting Height Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Recycling Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Installing the Discharge Deflector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Removing the Recycling Plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Installing the Grass Bag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Change Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Check Mower Blade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Check Engine Drive Belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Service - Periodic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Wheel Drive Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Storage Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Mower Blade Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Blade Sharpening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Wheel Drive Control Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Belt Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Engine Drive Belt Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Rear Cover Removal & Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Service Schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Slope Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
WARNING
WARNING
!
!
!
!
Battery posts, terminals and related accessories contain
lead and lead compounds, chemicals known to the State of
California to cause cancer and birth defects or other
reproductive harm. Wash hands after handling.
Engine exhaust, some of its constituents, and certain
vehicle components contain or emit chemicals known to
the State of California to cause cancer or other reproductive
harm.
1
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IMPORTANT OPERATOR SAFETY INSTRUCTIONS
!
!
WARNING: This powerful cutting machine is capable of amputating hands and feet and can throw objects
that can cause injury and damage! Failure to comply with the following SAFETY instructions could result in
serious injury or death to the operator or other persons. The owner of the machine must understand these
instructions and must allow only persons who understand these instructions to operate machine. Each
person operating the machine must be of sound mind and body and must not be under the influence of any
substance, which might impair vision, dexterity or judgment. If you have any questions pertaining to your
machine which your dealer cannot answer to your satisfaction, call or write the Customer Service
Department at SNAPPER, McDonough, Georgia 30253. Phone: (1-800-935-2967).
PROTECTION FOR CHILDREN
PREPARATION
(Continued From Previous Column)
Tragic accidents can occur if the operator is not alert to the
presence of children. Children are often attracted to the
machine and the mowing activity. Never assume that
children will remain where you last saw them.
Add fuel outdoors only with engine stopped and cool. Clean
spilled fuel and oil from machine. DO NOT smoke.
5. Check the area to be mowed and remove all objects such
as toys, wire, rocks, limbs and other objects that could
cause injury if thrown by blade or interfere with mowing.
Also note the location of holes, stumps, and other possible
hazards.
1. KEEP children out of the mowing area and under the
watchful care of a responsible adult other than the operator.
2. DO NOT allow children in yard when machine is operated
and turn machine OFF if anyone enters the area.
3. DO NOT allow pre-teenage children to operate machine.
4. ALLOW only responsible adults & teenagers with mature
judgment under close adult supervision to operate machine.
5. DO NOT pull mower backwards unless absolutely
necessary. LOOK and SEE behind and down for children,
pets and hazards before and while backing.
6. Keep people and pets out of the mowing area.
Immediately, STOP Blade, Stop engine and Stop mower if
anyone enters the area.
7. Check shields, deflectors, switches, blade controls and
other safety devices frequently for proper operation and
location.
6. USE EXTRA CARE when approaching blind corners,
shrubs, trees, or other objects that may obscure vision.
8. Make sure all safety decals are clearly legible. Replace if
damaged.
9. Protect yourself when mowing and wear safety glasses,
long pants and substantial footwear. DO NOT mow
barefooted or with sandals.
10. Know how to STOP blade and engine quickly in
preparation for emergencies.
11. Use extra care when loading or unloading the machine
into a trailer or truck.
12. Check grass catcher components frequently for signs of
wear or deterioration and replace as needed to prevent
injury from thrown objects going through weak or torn
spots.
SLOPE OPERATION
1. Slopes are a major factor related to slip and fall
accidents, which can result in severe injury. All slopes
require extra caution. If you feel uneasy on a slope, DO NOT
mow it.
2. Mow across slopes, never up-and-down. Exercise
extreme CAUTION when changing directions on slopes. DO
NOT mow steep slopes or other areas where stability or
traction is in doubt. Refer to the Slope Guide at the back of
this manual.
3. Use extra care with grass catchers or other attachments;
these affect the handling and the stability of the machine.
SAFE HANDLING OF GASOLINE
To avoid personal injury or property damage, use extreme
care in handling gasoline. Gasoline is extremely flammable
and the vapors are explosive.
1. Extinguish all cigarettes, cigars, pipes and other sources
of ignition.
PREPARATION
1. Read, understand, and follow instructions and warnings
in this manual and on the mower, engine and attachments.
Know the controls and the proper use of the mower before
starting.
2. Use only an approved fuel container.
2. Only mature, responsible persons shall operate the
machine and only after proper instruction.
3. Data indicates that operators age 60 and above, are
involved in a large percentage of mower-related injuries.
These operators should evaluate their ability to operate the
mower safely enough to protect themselves and others
from serious injury.
4. Handle fuel with extra care. Fuels are flammable and
vapors are explosive. Use only an approved fuel container.
DO NOT remove fuel cap or add fuel with engine running.
3. DO NOT remove fuel cap or add fuel with the engine
running. Allow the engine to cool before refueling.
4. DO NOT refuel the machine indoors.
5. DO NOT store the machine or fuel container inside where
there is an open flame, spark or pilot light such as on a
water heater or other appliances.
6. DO NOT fill fuel containers inside a vehicle or on a
truck or trailer bed with a plastic liner. Always place the
containers on the ground away from the vehicle before
filling.
2
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IMPORTANT OPERATOR SAFETY INSTRUCTIONS (Continued)
!
!
SAFE HANDLING OF GASOLINE
OPERATION
(Continued From Previous Page)
7. Remove gas-powered equipment from the vehicle or
trailer and refuel it on the ground. If this is not possible,
then refuel equipment using a portable container, rather
than a gasoline dispenser nozzle.
(Continued From Previous Column)
14. DO NOT discharge material against a wall or
obstruction. Material may ricochet back towards the
operator.
15. Slow down before turning.
8. DO NOT start gas powered equipment in enclosed
vehicles or trailers.
9. Keep the nozzle in contact with the rim of the fuel tank or
container opening at all times until fueling is complete. DO
NOT use a nozzle lock-open device
10. If fuel is spilled on clothing, change clothing
immediately.
16. Watch out for traffic when near or crossing roadways.
17. DO NOT operate engine in enclosed areas. Engine
exhaust gases contain carbon monoxide, a deadly poison.
18. Only use accessories approved by the manufacturer.
See manufacturer’s instructions for proper operation and
installation of accessories.
11. DO NOT overfill a fuel tank. Replace fuel cap and tighten
securely.
MAINTENANCE AND STORAGE
1. DO NOT store mower or fuel container inside where
fumes may reach an open flame, spark or pilot light such as
in a water heater, furnace, clothes dryer or other gas
appliance. Allow engine to cool before storing machine in
an enclosure. Store fuel container out of reach of children
in a well ventilated, unoccupied building.
OPERATION
1. DO NOT put hands or feet near or under rotating parts.
Keep clear of discharge area while engine is running.
2. STOP engine when crossing gravel drives, walks, or
roads, and under any conditions where thrown objects
might be a hazard.
2. Keep mower and engine free of grass, leaves or excess
grease to reduce fire hazard and engine overheating.
3. When draining fuel tank, drain fuel into an approved
container outdoors and away from open flame.
4. Keep all bolts, especially blade bolts, nuts and screws
properly tight. Check that all cotter pins are in proper
position.
5. Always provide adequate ventilation when running
engine. Engine exhaust gases contain carbon monoxide, a
deadly poison.
6. Service engine and make adjustments only when engine
is stopped. Removed spark plug wire from spark plug and
secure wire away from spark plug to prevent accidental
starting.
7. DO NOT change engine governor speed settings or
overspeed engine.
8. Check grass bag assembly frequently for wear or
deterioration to avoid thrown objects and exposure to
moving parts. Replace with new bag if loose seams or tears
are evident. Replace slider or bag adapter if broken or
cracked.
9. Mower blades are sharp and can cut. Wrap the blades or
wear heavy leather gloves and use CAUTION when handling
them.
10. DO NOT test for spark by grounding spark plug next to
spark plug hole; spark plug could ignite gas exiting engine.
11. Have machine serviced by an authorized SNAPPER
dealer at least once a year and have the dealer install any
new safety devices.
3. Mow only in daylight or good artificial light.
4. DO NOT operate mower while under the influence of
alcohol or drugs.
5. After striking a foreign object or if mower vibrates
abnormally, STOP the engine, disconnect and secure spark
plug wire. Inspect the mower for any damage and repair the
damage before starting.
6. DO NOT mow near drop offs, ditches or embankments.
Operator could lose footing or balance.
7. STAY ALERT for holes and other hidden hazards. Tall
grass can hide obstacles. Keep away from ditches,
washouts, culverts, fences and protruding objects.
8. DO NOT mow on wet grass. Always be sure of your
footing. Keep a firm hold on the handle and walk, never run.
Slipping could cause injury.
9. ALWAYS stay behind handle when engine (motor) is
running.
10. DO NOT leave the machine with the engine running.
STOP BLADE and STOP ENGINE before leaving the
operators position for any reason.
11. Before cleaning, repairing or inspecting make certain
engine, blade and all moving parts have STOPPED.
Disconnect and secure spark plug wire away from plug to
prevent accidental starting.
12. STOP engine and wait until the blade comes to
complete STOP before removing grass bag and/or clearing
grass.
13. DO NOT operate mower without the entire grass
catcher, or guards in place discharge guard, rear guard or
other safety devices in place and working. DO NOT point
discharge at people, passing cars, windows or doors.
12. Use only genuine SNAPPER replacement parts to
assure that original standards are maintained.
3
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IMPORTANT
The figures and illustrations in this manual are provided
for reference only and may differ from your specific model.
Contact your Snapper dealer if you have questions.
G
E
H
F
B
I
A
D
C
Features and Controls
A.
B.
C.
D.
E.
Oil Fill Cap and Dipstick
Fuel Filler Cap
F.
Rope Start Handle
Drive Handle
Drive Handle Lock Lever
Rear Discharge Door
G.
H.
I.
Recycling Cover
Height Adjustment Lever
Blade Control
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Pre-Start Check List
Starting and Operation
Make the following checks and perform the service required
before each start-up.
Engine and Blade
1. Make sure the drive handle (A, Figure 3) is pulled fully
back, and the drive handle lock lever (B) is pushed fully
forward in the locked position.
2 Pull the blade control (C) against the handle.
3. Pull the rope start handle (D) to crank the engine.
4. After the engine starts, allow a brief warm-up until the
engine runs smooth before beginning mower operation.
1. Check the guards, deflectors, grass bag, and covers to
make sure all are in place and securely tightened.
2. Check the blade control (A, Figure 1) and drive handle
(B) to insure they work freely.
A
B
NOTE: To stop the engine (and blade), release the blade
control.
B
A
Figure 1: Mower controls
3. Check the cutting height. Adjust to the desired height.
Refer to the Section ‘Cutting Height Adjustment’.
4. Check the engine oil and add oil as needed to bring the
level up to the full mark (A, Figure 2). Refer to the
Engine Owner’s Manual for oil specifications.
C
D
A
Figure 3: Starting the mower
Figure 2: Checking engine oil
5. Add fuel to the tank after pushing the mower outside
where fumes can safely dissipate. Fill the tank to 1-1/2
inches below the top of the filler neck (to allow for fuel
expansion). Make sure the cap is tightened after fueling.
Refer to the Engine Owners Manual for fuel
specifications.
6. Clean the exterior surfaces of the cutting deck and
engine of any accumulation of spilled fuel, dirt, grass,
oil, etc. Keep the engine air intake screen and cooling
fins clear at all times.
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Starting and Operation (Continued)
Handle Height Adjustment
The height of the mower handle can be adjusted as follows:
1. Remove the handle knobs, washers and carriage bolts
from the lower handle (A, Figure 5).
Propelling the Mower
1. Start the engine. Refer to the Section entitled “Starting
and Operation – Engine and Blade”.
2. Pull the drive handle lock lever (A, Figure 4) fully back
to the unlock position.
3. Begin pushing the drive handle (B) forward to engage
the wheel drive and propel the mower forward. Forward
speed can be increased by pushing the drive handle
farther forward, and decreased by pulling the drive
handle back.
2. Align the handle assembly with one of the three handle
height adjustment holes (B) in the mounting brackets.
3. Replace the hardware removed in Step 1, tightening
securely.
A
B
B
A
Figure 5: Adjusting the handle height
Figure 4: Drive handle
WARNING
!
!
DO NOT attempt any maintenance, adjustments or service
with engine and blade running. STOP engine and blade.
Disconnect spark plug wire and secure away from spark
plug. Engine and components are HOT. Avoid serious
burns, allow sufficient time for all components to cool.
Stopping
1. Stop forward motion of the mower by pulling the drive
handle fully back. Be sure to push the drive handle lock
lever fully forward into the locked position.
2. Stop the engine and blade by releasing the blade
control.
6
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WARNING
!
!
DO NOT attempt any maintenance, adjustments or service
with engine and blade running. STOP engine and blade.
Disconnect spark plug wire and secure away from spark
plug. Engine and components are HOT. Avoid serious
burns, allow sufficient time for all components to cool.
1.50 in
4.00 in
Cutting Height Adjustment
Figure 7: Cutting height settings (approximate)
1. Pull the height adjusting lever (A, Figure 6) outward,
and move to the desired cutting height. The highest
cutting position is Notch 9 (B; also see Figure 7). The
lowest cutting position is Notch 1 (C).
Recycling Operation
Note: For best recycling results, cut up to a maximum of 1/3
of grass blade length and recycle ONLY when grass is dry.
1. Set the height adjustment lever in the highest cutting
position (Notch 9). Refer to the Section entitled “Cutting
Height Adjustment”.
Note: The lever will set all wheels to the same cutting height.
WARNING
!
!
Stop engine and mower blade by releasing the blade
control before adjusting cutting height.
2. Proceed mowing slowly. If the grass is very dense,
lower the height adjustment lever one notch lower to
improve recycling performance.
A
Installing the Discharge Deflector
1. Raise the recycling cover (A, Figure 8).
Important: The recycling cover should remain on the
machine at all times. Do not remove.
C
A
D
B
C
B
Figure 8: Installing the discharge deflector
Figure 6: Adjusting cutting height
2. Install the deflector (B) to the deck under the recycling
cover, making sure that:
The tabs (C) hook under the pivot rod (D).
The locking tab on the deck (A, Figure 9) goes
through the slot in the deflector (B).
3. Lower the recycling cover against the deflector.
7
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Installing the Grass Bag
WARNING
!
!
1. Raise the rear discharge door (A, Figure 11).
2. Remove the recycling plug. Refer to the section entitled
“Removing the Recycling Plug”.
DO NOT attempt any maintenance, adjustments or service
with engine and blade running. STOP engine and blade.
Disconnect spark plug wire and secure away from spark
plug. Engine and components are HOT. Avoid serious
burns, allow sufficient time for all components to cool.
3. Holding the grass bag handle (B), install the grass bag
onto the back of the mower, making sure that the grass
bag hooks (A, Figure 12) are hooked onto the rear door
pivot rod (B).
B
A
A
B
Figure 11: Installing the grass bag
Figure 9: Deflector locking tab
A
Removing the Recycling Plug
1. Raise the rear discharge door (A, Figure 10).
2. Remove the recycling plug (B) from the rear discharge
chute.
Note: The recycling plug should be removed only when
bagging is desired, and should be replaced as soon as
bagging operations are completed.
B
Figure 12: Grass bag hooks
B
WARNING
!
!
A
Grass Catcher bags used on SNAPPER products are made
of woven fabric, and are subject to deterioration and wear
during normal usage. Check condition of bag before each
use. Immediately replace worn or damaged catcher bags
with only bags recommended by SNAPPER. The grass
catcher is optional equipment on some models.
Figure 10: Removing the recycling plug
8
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Check Mower Blade
Maintenance - Introduction
1. Disconnect the spark plug wire and secure the end away
from the plug.
To retain the quality of the mower, use genuine SNAPPER
replacement parts only. Contact a local SNAPPER dealer for
parts and service assistance. For the correct part or
information for a particular mower, always mention the
model and serial number.
2. Tilt the mower up on its rear wheels for access to the
blade cap screw (A, Figure 14). Do not tilt the mower
with the spark plug or carburetor down.
Important: Drain the fuel tank before tipping the mower. DO
NOT tip the machine with the carburetor or spark plug down.
Oil from the crankcase will saturate the air filter and cause
the engine to be hard to start or not start at all. If
contamination does occur, the air filter will have to be
replaced.
WARNING
!
!
DO NOT attempt any maintenance, adjustments or service
with engine and blade running. STOP engine and blade.
Disconnect spark plug wire and secure away from spark
plug. Engine and components are HOT. Avoid serious
burns, allow sufficient time for all components to cool.
Wear heavy leather gloves when handling or working
around cutting blades. Blades are extremely sharp and can
cause severe injury.
A
Service - After First 5 Hours
Change Engine Oil
1. Refer to the Engine Manual for proper oil specifications,
procedures and proper service intervals.
2. For the simplest/cleanest oil change, simply turn the
mower on its side to drain the oil, as shown. Drain the
oil through the dipstick tube (A, Figure 13) into a
container. Allow sufficient time for all the oil to drain.
Figure 14: Tightening the blade cap screw
Important: Drain the fuel tank before tipping the machine.
DO NOT tip the machine with the carburetor or spark plug
down. Oil from the crankcase will saturate the air filter and
cause the engine to be hard to start or not start at all. If
contamination does occur, the air filter will have to be
replaced.
3. Check the torque of the blade cap screw. Recommended
torque should be 40 ft. lbs.
4. Check the blade for sharpness, wear and damage. Refer
to the Section entitled “Blade Wear Limits”.
Check Engine Drive Belt
1. Visually check the engine drive belt for cracking, fraying,
severed or exposed belt strands. If worn or damaged,
replace the belt before operating the mower.
Service - Periodic
Perform all maintenance as described in the “Service
Schedule” section of this manual.
Engine
Service the engine according to the engine owner’s manual.
A
Air Filter
Refer to the engine owner’s manual for service instructions.
Figure 13: Draining the engine oil
Engine Oil
Refer to the engine owner’s manual for service instructions.
3. Dispose of drain oil properly.
4. Fill the engine with oil as specified in the Engine Manual.
Do Not overfill.
9
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WARNING
!
!
DO NOT attempt any maintenance, adjustments or service
with engine and blade running. STOP engine and blade.
Disconnect spark plug wire and secure away from spark
plug. Engine and components are HOT. Avoid serious
burns, allow sufficient time for all components to cool.
Wear heavy leather gloves when handling or working
around cutting blades. Blades are extremely sharp and can
cause severe injury.
Wheel Drive Components
1. Remove the rear cover. Refer to the Section entitled
“Rear Cover Removal & Installation”.
2. Clean any debris buildup on or around the transmission,
axles, idler, pulleys, belt, etc., as well as on the inside of
the cover. Check components for wear or damage.
Replace worn or damaged components immediately.
3. Replace the rear cover.
Important: DO NOT operate the mower without the rear
cover securely in place.
Storage Procedure
Refer to the Engine Owner’s Manual for directions regarding
engine storage preparations. Prepare the mower for “end of
season” storage as follows:
1. Drain the fuel from the fuel tank and let the engine run
until all fuel is out of the carburetor.
2. Disconnect and remove the spark plug wire away from
the spark plug before any other preparations are made!
3. Tape all openings closed to prevent spraying water into
the exhaust or air intakes during washing.
4. Tilt the mower up on its rear wheels and thoroughly
clean the underside of the deck. Do not tilt the mower
with the spark plug or carburetor down. Scrape away
any accumulation of grass with a putty knife and/or
wire brush.
5. Lubricate all exposed metal with a light coating of oil to
prevent corrosion.
6. Carefully fold the handles, “flexing” the control cables to
prevent cable damage.
7. Store the mower in a shed or other dry area, protected
from weather.
10
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3. Remove the blade (B, Figure 16).
WARNING
!
!
DO NOT attempt any maintenance, adjustments or service
with engine and blade running. STOP engine and blade.
Disconnect spark plug wire and secure away from spark
plug. Engine and components are HOT. Avoid serious
burns, allow sufficient time for all components to cool.
Wear heavy leather gloves when handling or working
around cutting blades. Blades are extremely sharp and can
cause severe injury.
Make sure that
blade hub is seated
between flanges
A
C
Mower Blade Replacement
B
Standard Blade Wear Limit
1. Inspect the blade (Figure 15) frequently for signs of
excessive wear or damage:
D
(A) New blade
(B) Wear limit (notch starts)
(C) Dangerous condition! Do not use on the mower!
Replace with a new blade.
E
Figure 16: Removing the mower blade
4. Sharpen the blade on a grinding wheel at an angle of 22
to 28 degrees (B, Figure 17). DO NOT sharpen the blade
beyond the original cutting edge (A).
5. Check blade for balance. If necessary, correct balance by
grinding heavy end of blade.
A
B
6. Reinstall blade (B, Figure 16). Note the correct
assembly order:
C
(A) Blade hub
(B) Blade
(C) Blade flange (facing up)
(D) Cone washer (concave side up)
(E) Capscrew
7. Check torque of blade retaining cap screw.
Recommended torque should be 40 ft. lbs.
Figure 15: Mower blade wear limits
Do not sharpen
beyond original
cutting edge
22-280
WARNING
!
!
DO NOT use a cutting blade that shows signs of excessive
wear or damage. Refer to the Section entitled “MOWER
BLADE REPLACEMENT” for proper blade inspection and
service procedures.
B
Blade Sharpening
1. Disconnect the spark plug wire and secure the end away
from the plug.
End view of
blade assembly
2. Tilt the mower up on its rear wheels. Do not tilt the
mower with the spark plug or carburetor down.
A
Important: Drain the fuel tank before tipping the mower. DO
NOT tip the machine with the carburetor or spark plug down.
Oil from the crankcase will saturate the air filter and cause
the engine to be hard to start or not start at all. If
contamination does occur, the air filter will have to be
replaced.
Figure 17: Sharpening the mower blade
11
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3. Push the drive lever fully forward, and measure the
length of the extended spring. The overall spring length
should increase by 0.020 – 0.025”.
WARNING
!
!
DO NOT attempt any maintenance, adjustments or service
with engine and blade running. STOP engine and blade.
Disconnect spark plug wire and secure away from spark
plug. Engine and components are HOT. Avoid serious
burns, allow sufficient time for all components to cool.
4. To adjust spring extension:
a. Disengage the handle.
b. To increase (+) the extended spring length, rotate
the thumb wheel (A, Figure 20) upwards (counter-
clockwise, from operator’s perspective).
c. To decrease (-) the extended spring length, rotate
the thumb wheel downwards (clockwise).
5. Push the drive handle fully forward and recheck the
extended spring length. Repeat Step 4 as needed.
Wheel Drive Control Adjustment
The drive handle (A, Figure 18) should engage the
transmission when the handle is pushed forward, and
should disengage the transmission when the handle is
pulled fully back.
A
+
A
-
Figure 20: Adjusting the transmission spring tension
IMPORTANT: INCORRECT ADJUSTMENT CAN CAUSE
PREMATURE WEAR AND/OR DAMAGE TO THE WHEEL
DRIVE COMPONENTS.
Figure 18: Wheel drive controls
If the transmission does not engage or disengage,
adjustment may be performed as follows:
1. Remove the rear cover from the mower. Refer to the
section entitled “Rear Cover Removal & Installation”.
2. With the drive lever pulled fully back in the ‘DISENGAGE’
position, the spring (A, Figure 19) on the end of the
wheel drive control cable should have no tension.
Measure the overall length of the unextended spring (B).
A
B
Figure 19: Measuring the disengaged transmission spring
length
12
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Engine Drive Belt Replacement
1. Empty the fuel tank.
2. Remove the blade (A, Figure 21). Refer to the Section
entitled “Blade Sharpening”.
3. Remove the hardware (B) securing the two-piece belt
cover beneath the deck. Remove the cover.
4. Remove the rear cover of the mower. Refer to the Section
entitled “Rear Cover Removal & Installation”.
5. To replace the belt:
a. Remove the hardware (B, Figure 22) securing the belt
guide (A) to the transmission assembly. Remove the
belt guide.
b. Remove the belt from the transmission and engine
pulleys, noting the belt routing.
c. Replace the belt.
d. Replace the belt guide onto the transmission.
6. Replace the covers and blade.
WARNING
!
!
DO NOT attempt any maintenance, adjustments or service
with engine and blade running. STOP engine and blade.
Disconnect spark plug wire and secure away from spark
plug. Engine and components are HOT. Avoid serious
burns, allow sufficient time for all components to cool.
Belt Service
On self-propelled mowers, the engine belt transmits power
from the engine to the transmission that powers the rear
wheels. Should the belt become worn, it could cause slip-
page, which would impair mower performance. The condi-
tion of the engine belt should be checked after every 25
hours of mower operation.
Note: Recommended blade torque is 40 ft. lbs.
A
B
A
B
Figure 22: Removing the belt guide
Figure 21: Removing the blade and belt cover
13
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WARNING
!
!
DO NOT attempt any maintenance, adjustments or service
with engine and blade running. STOP engine and blade.
Disconnect spark plug wire and secure away from spark
plug. Engine and components are HOT. Avoid serious
burns, allow sufficient time for all components to cool.
Rear Cover Removal and Installation
To Remove the Rear Cover
1. Remove the three fasteners (A, Figure 23) securing the
rear apron to the machine.
2. Remove the two fasteners (B) securing the rear cover to
the machine.
3. Slide the cover (C) down and out to remove. Set all
components aside.
To Install the Rear Cover
1. Reverse steps 1-3 above, making sure the tab (D) on the
rear cover is located on the outside of the machine.
D
C
B
A
Figure 23: Removing the rear cover
14
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Service Schedule
ITEM
SERVICE
PERFORMED
REF.
EACH
USE
5
HRS
25
HRS
50
HRS
100
HRS
EACH
SEASON
Engine Oil
Check Oil Level
Page 5
Page 9
X
Initial Oil Change
X
Periodic Oil Change
Clean Sponge Element
Clean or Replace
Replace
Page 9
X*
Air Pre-Cleaner
Air Cleaner
Engine Manual
Engine Manual
Engine Manual
Engine Manual
X**
X**
Spark Plug
X
Engine Cooling
System
Clean Shroud & Fins
X**
Drive Belt
Check for Wear and
Tension
Page 9, 13
Page 9, 11
X
X
X
Mower Blade
Check for wear, Damage
& Replacement
X
X
Mower Deck
Clean Debris
Accumulation
Page 5
Wheel Drive
Components
Clean Debris
Accumulation; Check for
Wear or Damage
Page 10
X
X
Transmission Cable
Spring Adjustment
Check & Adjust
Page 12
X
X
15
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Troubleshooting
PROBLEM
PROBABLE CAUSE
CORRECTIVE ACTION
1. Fill fuel tank with fresh fuel.
Engine Will Not Start 1. Fuel tank empty.
Using Recoil Starter
2. Engine needs priming.
3. Spark plug wire disconnected.
2. Prime. Check Engine Manual for Instructions.
3. Place spark plug wire onto spark plug.
Engine Stalls or Stops 1. Blade control is released or is not being held 1. Blade control should be held securely against
After Running
securely against handle.
2. Fuel tank empty.
handle at all times during operation of mower.
2. Fill with fuel to proper level.
3. Engine air pre-cleaner and or air cleaner dirty. 3. Clean free of all debris.
4. Spark plug defective or gap set improperly.
5. Water, debris or stale fuel in fuel system.
Engine Loses Power 1. Engine air pre-cleaner or air cleaner dirty.
2. Spark plug faulty.
4. Service spark plug.
5. Drain and clean fuel system.
1. Clean or replace filters.
2. Service spark plug.
3. Water, debris or stale fuel in fuel system.
3. Drain and clean fuel system.
Excessive Vibration 1. Damaged, out of balance or bent mower blade. 1. Service mower blade.
2. Loose blade components.
3. Loose or missing air lift (if equipped).
4. Lumpy or frayed belt.
2. Service and tighten loose parts.
3. Replace air lifts. Tighten to proper torque.
4. Replace belt.
Mower Will Not Move 1. Build-up of debris on or around wheel drive 1. Clean debris.
Loss Of Traction
components.
2. Transmission cable adjustment required.
2. Adjust transmission cable.
3. Replace drive belt.
4. Contact authorized SNAPPER dealer.
1. Adjust transmission cable.
2. Contact authorized SNAPPER dealer.
3. Drive belt requires replacement.
4. Damaged transmission.
Transmission Noise 1. Transmission cable adjustment required.
2. Damaged transmission.
Ground Speed
1. Build-up of debris on or around wheel drive 1. Clean debris.
Too Fast / Too Slow; control components.
2. Transmission cable adjustment required.
2. Adjust transmission cable.
3. Replace drive belt.
4. Contact authorized SNAPPER dealer.
1. Adjust cutting height.
2. Adjust to a slower speed.
3. Sharpen cutting edges or replace blade.
1. Adjust to a slower speed.
2. Mow when grass is dry.
3. Service mower blade.
Unable to Adjust
Ground Speed
3. Drive belt requires replacement.
4. Damaged transmission.
Cutting Grass Improperly1. Cutting height too low or high.
2. Forward speed too fast.
3. Cutting blade dull or damaged.
Poor Grass Discharge 1. Forward speed too fast.
2. Grass is wet.
3. Excessively worn or damaged blade.
4. Build up of grass clippings and debris under 4. Clean deck.
deck.
5. Improper blade installed on deck.
5. Install proper SNAPPER blade.
6. Install blade properly.
1. Contact authorized SNAPPER dealer.
2. Check and tighten drain plug.
3. Make sure dip stick or oil filler cap is securely in
place.
6. Blade installed improperly on deck.
1. Leaking engine case.
Oil Leaking
16
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2 YEAR LIMITED WARRANTY
For two (2) years from purchase date for the original purchaser’s residential, non-commercial use, SNAPPER, through any
authorized SNAPPER dealer will replace, free of charge (except for taxes where applicable), any part or parts found upon
examination by the factory at McDonough, Georgia, to be defective in material or workmanship or both.
For ninety (90) days from purchase date for the original purchaser’s commercial, rental, or other non-residential use, SNAP-
PER, through any authorized SNAPPER dealer will replace, free of charge, any part or parts found upon examination by the
factory at McDonough, Georgia, to be defective in material or workmanship or both.
All transportation costs incurred by the purchaser in submitting material to an authorized SNAPPER dealer for replacement
under this warranty must be paid by the purchaser.
This warranty does not apply to certain transmissions, to engines and their components, and batteries, as these items are war-
ranted separately. This warranty does not apply to parts that have been damaged by accident, alteration, abuse, improper
lubrication, normal wear, or other cause beyond the control of SNAPPER. This warranty does not cover any machine or com-
ponent part that has been altered or modified changing safety, performance, or durability.
Batteries have a one (1) year warranty period with free replacement if required for one (1) year from the original purchase
date. SNAPPER will not be responsible for any installation cost incurred. The battery warranty only covers original equipment
batteries and does not cover damage to the battery or machine caused by neglect or abuse, destruction by fire, explosion,
freezing, overcharging, improper maintenance, or use of improper electrolyte.
There is no other express warranty.
DISCLAIMER OF WARRANTY
Implied warranties, including those of merchantability and fitness for a particular purpose, are limited to two (2) years
from purchase date for the original purchaser’s residential or other non-commercial use, and ninety (90) days from pur-
chase for the original purchaser’s commercial, rental or other non-residential use, and to the extent permitted by law, any
and all implied warranties are excluded. This is the exclusive remedy. Liabilities for consequential damages, under any
and all warranties are excluded.
Some states do not allow limitations on how long an implied warranty lasts, or do not allow the exclusion or limitation of
incidental or consequential damages, so the above limitation or exclusion may not apply to you.
This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
WARNING: THE USE OF REPLACEMENT PARTS OTHER THAN GENUINE SNAPPER PARTS MAY IMPAIR THE SAFETY OF
SNAPPER PRODUCTS AND WILL VOID ANY LIABILITY AND WARRANTY BY SNAPPER ASSOCIATED WITH THE USE OF
SUCH PARTS.
IMPORTANT:
Please fill out the attached SNAPPER Product Registration Card immediately and mail to:
Snapper’s Product Registration Center, P.O. Box 1379, McDonough, Georgia 30253
17
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Slope Guide
19
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Notes
21
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21” VARIABLE SPEED
REAR DISCHARGE
WALK BEHIND
MOWERS
Product Specifications (All)
Common Service Parts
Part Number
Deck Size (in)
Height of Cut (in)
21
1.25 - 4
Variable Speed/Gear
Blade Control Cable
Wheel Drive Control Cable
Cutter Blade (Double Wave)
Drive Belt
7102648
7102647
7100242
7100883
Transmission Type
Ground Speed (mph)
Engine Power (ft-lbs)
Engine Displacement (cc)
Fuel Tank Capacity (qt)
0 - 4.2
6.75
190
1.6
Engine Power Rating Information: The gross power rating for individual gas engine models is labeled in accordance with
SAE (Society of Automotive Engineers) code J1940 (Small Engine Power & Torque Rating Procedure), and rating perform-
ance has been obtained and corrected in accordance with SAE J1995 (Revision 2002-05). Torque values are derived at 3060
RPM; horsepower values are derived at 3600 RPM. Actual gross engine power will be lower and is affected by, among other
things, ambient operating conditions and engine-to-engine variability. Given both the wide array of products on which engines
are placed and the variety of environmental issues applicable to operating the equipment, the gas engine will not develop the
rated gross power when used in a given piece of power equipment (actual "on-site" or net horsepower). This difference is due
to a variety of factors including, but not limited to, accessories (air cleaner, exhaust, charging, cooling, carburetor, fuel pump,
etc.), application limitations, ambient operating conditions (temperature, humidity, altitude), and engine-to-engine variability.
Due to manufacturing and capacity limitations, Briggs & Stratton may substitute an engine of higher rated power for this
Series engine.
Snapper Products
535 Macon Street
McDonough, GA 30253
1-800-935-2967
22
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