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INDEX
SAFETY................................................................Pages 1 - 6
WARRANTY POLICY ...........................................Page
SPECIFICATIONS ................................................Page
SEAT ADJUSTMENT............................................Page
7
8
9
CONTROLS ..........................................................Pages 10-13
OPERATION INSTRUCTIONS .............................Pages 14-18
CARE AND MAINTENANCE.................................Pages 19-33
STANDARD SERVICE PARTS LIST.....................Page
34
TROUBLESHOOTING ..........................................Pages 35-37
DIAGRAMS...........................................................Pages 38-44
Part No. 8946
September 1995
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SAFETY
RIDING LAWNMOWERS, IF IMPROPERLY OPERATED,
CAN CAUSE SERIOUS INJURY OR DEATH
The most common causes of injury to the operator or bystander...
Page 1
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SAFETY
SAFETY SYMBOLS:
SAFETY ALERT SYMBOL -
When you see this symbol,
BE ALERT to the potential for injury.
Follow recommended safety precautions and safe
operating practices.
Danger indicates an imminently hazardous
situation which, if not avoided, will result in death
or serious injury.
Warning indicates a potentially hazardous
situation which, if not avoided, could result in
death or serious injury.
Caution indicates a potentially hazardous
situation which, if not avoided, may result in minor
or moderate injury. It may also be used to alert
against unsafe practices.
Page 2
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SAFETY
This cutting mower is capable of amputating hands and feet, and throwing objects.
Failure to observe the following safety instructions could result in
serious injury or death.
GENERAL OPERATION:
•
•
•
Read, understand, and follow all instructions in the manual and on the mower before starting.
Only allow responsible adults, who are familiar with the instructions, to operate the mower.
Clear the area of objects such as rocks, toys, wire, etc., which could be picked up and thrown
by the blade.
•
Be sure the area is clear of other people before mowing. Stop mower if anyone enters the
area.
•
•
Never carry passengers.
Do not mow in reverse unless absolutely necessary. Always look down and behind before
and while backing.
•
Be aware of the mower discharge direction and do not point it at anyone. Do not operate the
mower without either the entire grass catcher or the deflector in place.
•
•
Slow down before turning.
Never leave a running mower unattended. Always turn off blades, set parking brake, stop
engine, and remove key before dismounting.
•
•
•
•
•
•
Turn off blades when not mowing.
Stop engine before removing grass catcher or unclogging chute.
Mow only in daylight or good artificial light.
Do not operate the mower while under the influence of alcohol or drugs.
Watch for traffic when operating near or crossing roadways.
Use extra care when loading or unloading the mower into a trailer or truck. Do not ride the
mower when loading & unloading.
The Engine Exhaust from this product contains chemicals known to the
State of California to cause cancer, birth defects or other reproductive harm.
Page 3
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SAFETY
SLOPE OPERATION:
Slopes are a major factor related to loss-of-control and tip-over accidents,
which can result in severe injury or death.
All slopes require extra caution.
If you cannot back up the slope or if you feel uneasy on it, do not mow it.
DO
Mow across the slope with your Dixon ZTR - never up or down.
Remove obstacles such as rocks, tree limbs, etc.
Watch for holes, ruts or bumps. Uneven terrain could overturn the mower. Tall grass can hide
obstacles.
Use slow speed.
Use extra care with grass catchers or other attachments. These can change the stability of the
mower.
Keep all movement on the slopes slow and gradual. Do not make sudden changes in speed or
direction.
Avoid starting or stopping on a slope. If tires lose traction, disengage the blades and proceed
slowly down the slope.
DO NOT
Do not turn on slopes unless necessary, and then, turn slowly and gradually downhill, if possible.
Do not mow near drop-offs, ditches, or embankments. The mower could suddenly turn over if
a wheel is over the edge of a cliff or ditch, or if an edge caves in.
Do not mow on wet grass. Reduced traction could cause sliding. Do
not try to stabilize the mower by putting your foot on the ground. Do
not use grass catcher on steep slopes.
Page 4
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SAFETY
CHILDREN:
Tragic accidents can occur if the operator is not alert to the
presence of children.
Children are attracted to lawn mowers and the mowing activity.
NEVER assume children will stay where they were last seen.
Be alert to avoid accidents.
9
Keep children out of the mowing area and under the watchful care of another responsible adult.
• Be alert and turn mower off if a child enters the area.
• Before and during backing, look behind and DOWN for small children.
• Never carry children. They may fall off and be seriously injured or interfere with safe mower
operation.
• Never allow children to operate the mower.
• Use extra care when approaching blind corners, shrubs, trees, or other objects that may
obscure vision.
Page 5
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SAFETY
SERVICE:
Use extra care in handling gasoline and other fuels. They are flammable and vapors are
explosive.
•
Use only an approved container.
Never remove gas cap or add fuel with the engine running. Allow engine to cool before
refueling. Do not smoke.
Never refuel the mower indoors.
Never store the mower or fuel container inside a building where there is an open flame.
Never run a mower inside a closed area.
•
•
Keep nuts and bolts, especially blade attachment bolts, tight and keep equipment in good
condition.
•
•
Never tamper with safety devices. Check their proper operation regularly.
Keep mower free of grass, leaves, or other debris buildup. Clean up oil or fuel spillage.
Allow mower to cool before storing.
Stop and inspect the equipment if you strike an object. Repair, if necessary, before
restarting.
•
•
•
Never make adjustments or repairs with the engine running.
Grass catcher components are subject to wear, damage, and deterioration, which could
expose moving parts or allow objects to be thrown. Frequently check components and
replace with original equipment parts, when necessary.
•
•
Mower blades are sharp and can cut. Wrap the blade(s) or wear gloves, and use extra
caution when servicing them.
Batteries contain sulfuric acid. To prevent burns avoid contact with skin, eyes and clothing.
To prevent a fire or explosion keep sparks and open flames away from battery.
Before disconnecting the negative (-) ground cable, make sure all switches are OFF.
•
Check to assure that the drive chains are properly adjusted. A loose chain may come off
causing loss of control. This statement applies to chain drive models ZTR 2301, 3000 &
4000 Series.
Page 6
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DIXON LIMITED WARRANTY POLICY -- HYDRO-GEAR MODELS
This warranty policy applies to all HydroGear mowers or any 50" model, purchased on or after March 1,1990.
WARRANTY: Dixon Warranty term is for a period of one (1) year from date of purchase or 400 hours of use, whichever
occurs first. Mowers used for residential homeowner applications (used only at owner's primary place of residence) are
warranted for two (2) years from date of purchase or 400 hours of use, whichever occurs first. DIXON ZTR MOWERS
ARE WARRANTED AGAINST DEFECTS IN MATERIALS AND WORKMANSHIP AND PROVIDES FOR REPLACEMENT
OR REPAIR OF PARTS INCLUDING LABOR COSTS. THIS WARRANTY IS SUBJECT TO THE FOLLOWING
CONDITIONS AND LIMITATIONS:
1.
2.
Warranty applies only to original retail purchaser of new and unused mowers and accessories.
All Dixon warranty must be accomplished by authorized Dixon dealers and in accordance with Dixon warranty policy and
allowances. All warranty claims must be approved by Dixon Industries, Inc.
3.
4.
5.
Battery warranty: Limited to 90 days from date of purchase.
Accessories Warranty (Grass Catchers, Snow Blades, Tine Rakes, Covers, etc.): Limited to 90 days from date of purchase.
Warranty does not apply to damage in transit or incidents of misuse, negligence, accidents, or alteration. The use of parts
or components other than those supplied by Dixon Industries, Inc. VOIDS ALL WARRANTY.
6.
The following items are not covered by this warranty policy:
(a) Pick up and delivery charges for transportation of mower to and from an Authorized Dixon Dealer's place of business.
(b) Routine maintenance or adjustments.
(c) Belts / chains / sprockets / cutting blades.
(d) Engines -- All engines used on Dixon ZTR mowers are warranted by each individual engine manufacturer.
(e) Any costs or expense of providing substitute equipment while repair work is being performed on a warranted mower.
7.
There is no other express warranty. Implied warranties, including those of merchantability and fitness for a particular
purpose, are limited to the same duration of the express warranty, and to the extent permitted by law any and all implied
warranties are excluded. Liabilities for consequential damages under any and all warranties are excluded.
WARRANTY VALIDATION: At the time of sale, selling dealer must review each portion of this warranty document, complete the
information section below, secure customer's signature and send copy to Dixon Industries, Inc.
SEE DEALER FOR DETAILS
Page 7
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SPECIFICATIONS
Model ZTR 6601
CHASSIS:
BODY:
1 1 GA - rectangular tube
Two piece - made of rotational molded polyethylene. Front body contains
access panels for battery service and engine to mower deck belt removal. Rear
body tilts up to allow service on the entire drive system.
Economically designed for operator comfort by use of high density closed cell
foam, contoured back rest and arm rests. Seat is adjustable fore and aft.
SEAT:
1 0 GA stamped steel construction 3 blades combine for 60"
cut width Cut height approximately 1" to 4.5" via 8 position lift
handle
MOWER DECK:
BLADE DRIVE:
DRIVE SYSTEM:
Electric clutch
Each rear wheel is independently driven by a HydroGear BDU-10L Series 70
hydrostatic transmission. The hydrostatic transmissions, in turn, power a fully
enclosed HydroGear gearbox.
22 HP Kohler Command, 4-Cycle, Twin Cylinder, V-Configuration, Overhead
Valve, Air-Cooled, Gasoline, Vertical Shaft, Aluminum Head and Crankcase with
Cast Iron Liners, Oil Cooler.
ENGINE:
Electric by key switch operation with safety interlocks on parking brake and blade
drive clutch.
STARTING SYSTEM:
TIRES:
Front
Rear
1 1 X 4 X 5 Ribbed Tread
20 X 1 1 X 8 Turf Tamer AT.
Front
16-21lbs. Rear
5
RECOMMENDED
TIRE PRESSURE:
Ibs. maximum pressure
Fuel - 4.8 gallons total (dual tanks) Hydrostat oil tank -
3 quart with in-line 10 micron filter Hydrostat oil
recommendation, refer to page 29 Engine - 2 qts. SAE
1 0W30 (with filter)
CAPACITIES:
DIMENSIONS:
NOTE:
Width
72"
Height
Length
Weight
45"
89"
700 Ibs.
Additional information provided in service instructions underthe individual
component.
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE
Page 8
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SEAT ADJUSTMENT INSTRUCTIONS
1.
2.
Place parking brake in ON position. (Pull brake lever up)
Raise and push seat assembly and upper body rearward.
3.
4.
Loosen two front seat adjustment knobs, P/N 3978, and slide seat forward or backward to
desired position.
Re-tighten front seat adjustment knobs, P/N 3978.
DO NOT operate mower without seat adjustments properly tightened.
Carefully lower upper body and seat assembly to the closed position.
5.
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CONTROLS
Page 10
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CONTROLS
PARKING BRAKE:
The parking brake used on the Model ZTR 6601 is designed to hold
the mower from moving and is not intended for use in stopping the
mower while it is in motion.
CAUTION
Engage parking brake before starting engine.
Do not leave engine running for extended periods of time
without the parking brake engaged. Damage to the drive
system could result.
TO SET PARKING BRAKE:
The hand operated parking brake is located at left hand side
of mower.
To engage brake, pull lever up and to the rear. To release
brake, move lever forward and down. NOTE: Always set
parking brake before dismounting. Release parking brake
before moving mower.
HYDRO-GEAR DRIVE SYSTEM:
Allows the mower to turn on its own axis (zero turning radius).
Drive levers control braking, turning, travel speed and direction. Each lever controls one
side of the mower.
NOTE:
The pressure required to operate the mower is very light.
A minimum of 1/2 hour should be spent simply driving the mower
without the blade drive engaged.
Page 11
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CONTROLS
TO GO FORWARD:
From neutral position, gently push both drive levers forward.
To increase speed, move levers farther forward.
TO GO BACKWARD:
From neutral position, gently pull both drive levers toward you.
TURNING:
Turning is controlled by moving one drive lever slightly forward or rearward of the other.
To turn left, move left lever rearward of the right lever.
To turn "square corners" move lever of desired direction to neutral.
To turn on mower's own axis (zero turning radius) stop and move one lever to reverse
position and the other to forward position.
BRAKING:
To brake mower, move both levers in direction opposite of travel, release levers to
neutral, set parking brake. Park only on level surfaces.
CHOKE CONTROL LEVER:
Located on control panel to operator's right.
Used to start a cold engine.
THROTTLE CONTROL LEVER:
Located on control panel to operator's right.
Controls engine speed, slow to maximum.
While mowing throttle control should be set to the MAXIMUM or wide open setting to
insure adequate cooling of the engine and to maintain mower deck blade speed.
Page 12
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CONTROLS
BLADE DRIVE:
Located on control panel, on operator's right.
To engage the mower blades, lift switch up
lightly and push forward.
To disengage blades, pull switch backward.
Switch is clearly marked "on and off".
CIRCUIT BREAKER:
Located on control panel, on operator's right.
Protection of the electrical system is by
(1)15 amp circuit breaker.
If circuit breakertrips, push button to reset.
If this cpndition repeats, consult dealer for
inspection and repair.
MOWER DECK CUT HEIGHT LIFT LEVER:
Located to the right and front of operator.
Controls the cutting height.
Eight positions of adjustment.
Move lever in and forward to lower.
Move lever in and back to raise.
NOTE: Always use high position for transport.
Page 13
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OPERATION INSTRUCTIONS
The safe and successful operation of the Model ZTR 6601 will depend upon the operator
having the correct knowledge of all controls used on the mower and making good judgements
about the terrain to be mowed.
NEVER allow anyone to operate the mower without complete knowledge of all controls and
their functions.
During initial operation, "learning to drive", set throttle at slow speed.
Sound judgement by the owner will prevent accidents.
BEFORE OPERATING MOWER:
1.
Read engine manufacturer's operating and maintenance
instructions.
2.
3.
Discuss proper maintenance with your dealer.
Read and observe all safety instructions on your mower and in
the manual.
4.
Check engine oil.
.
Check gas cap to be sure it is in place.
Be sure parking brake is on.
5.
6.
7.
8.
Mower blade drive is off.
Know how to stop engine. (Turn key to off position)
Page 14
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OPERATION INSTRUCTIONS
TESTING OF SAFETY INTERLOCK SYSTEMS:
PARKING BRAKE SWITCH TEST:
With parking brake in the OFF position,
engine should not turn over or attempt to
start when the key switch is moved to
the start position.
BLADE DRIVE SWITCH TEST:
a. With electric blade drive switch turned ON
and parking brake in the ON position,
engine should not turn over or attempt to
start when key switch is moved to the start
position.
b. In a SAFE AREA away from bystanders,
start the engine, place throttle setting at
maximum or full. Engage the blades by
turning the blade drive switch to the ON
position. Raise weight slightly off of seat.
Engine should stop.
c. If any Safety Check fails, do not operate
the mower until the system has been
checked and repaired by an Authorized
Dixon ZTR Dealer.
Page 15
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OPERATION INSTRUCTIONS
STARTING INSTRUCTIONS:
Cold Engine
Push choke control lever fully forward.
1.
2.
Push throttle control lever to 1/2 setting.
3.
4.
5.
6.
Insert ignition key and turn to "Start" position. When engine starts,
release ignition key. Key will return to "Run" position.
Once engine starts to warm up, slowly move choke control lever to the
fully closed position.
Move throttle control lever to the wide open or maximum setting for actual
operation of the mower deck.
Engine must be operated at wide open or maximum setting to insure
adequate lubrication, cooling and cut quality of the mower deck.
NOTE: Model ZTR 6601 will
require a slightly longer
warm up period using
partial choke settings.
Page 16
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OPERATION INSTRUCTIONS
STARTING INSTRUCTIONS:
Engine has been operated.
1 . Move throttle control lever to 1/4 to 1/2 setting.
2. Insert ignition key and turn to "Start" position. When engine starts,
release ignition key. Key will return to "Run" position.
3. Move throttle control lever to wide open or maximum setting for actual
operation of the mower deck.
NOTE:
Model ZTR 6601 may require partial choke setting to start even
if the engine has been operated for a period of time.
4. Engine must be operated at wide open or maximum setting to insure
adequate lubrication, cooling and cut quality of the mower deck.
DO NOT operate the engine in an enclosed area due to the
harmful exhaust gas produced.
CAUTION
NOTE:
On initial operation, set throttle at slow speed.
Engine cannot be restarted when blade is engaged.
Safety switches stop engine when operator leaves seat while
mower blade is engaged.
Always turn engine off when leaving mower.
Page 17
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OPERATION INSTRUCTIONS
In order to achieve optimum cutting performance, please read and follow the tips listed below.
Additional information can be found in the troubleshooting guide on page 35.
Be sure that deflector is properly installed on the
discharge chute.
CAUTION
Set engine speed control to the wide open or full setting.
1
2.
Do Not Attempt To Cut Grass When It Is Wet. Wet grass will clog the underside of the deck
and discharge area.
If the grass is tall, place the mower deck cut height lever in the top or second notch. "Initially"
overlap cutting swaths instead of a full swath with each pass. Some applications may require
a second cutting.
3.
4. Keep The Underside Of The Mower Deck Clean. Frequent removal of dried grass and dirt will
allow the clippings to discharge correctly.
5.
Maintain Sharp Blade(s) Throughout The Cutting Season.
GRASS HEIGHT SUGGESTIONS:
Correct mowing height can reduce weeds and disease by 50% to 80%
The following grass cut heights are based on adequate moisture conditions and normal thatch
buildup in a healthy lawn. Some locations and applications may require slightly different cut
heights. If in doubt, consult your local lawn professional for assistance.
Grass Types:
Zoysia
Best Cut Heights:
2" - 2 1/2"
Blue Grass
1 1/2" - 3"
1 1/2" - 3"
1 1/2" - 2"
Fescue Blends
St. Augustine (Mid South)
St. Augustine (Deep South)
Tifton Bermuda
Centipede
3" - 4"
1 1/2"
1 1/2" - 2"
Common Bermuda
Bahia/Argentina/Pensacola
1 1/2" - 2"
2"
Page 18
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CARE AND MAINTENANCE
This portion of the Model ZTR 6601 owners manual deals with normal service items which can be
performed by the owner. Please remember that if you are in doubt as to the correct service procedures
to be followed, these and other service situations can be handled by a Dixon ZTR dealer who is familiar
with the service of your mower.
MAINTENANCE SCHEDULE:
To insure a long and trouble free service life on all the components used on the Model
ZTR 6601 a regular and thorough maintenance schedule should be followed. The
following items should be checked after the first (10) hours of operation and on a weekly
basis, or each (40) hours of use: (Items marked with an asterisk * require more
frequent attention)
1.
2.
3.
4.
5.
6.
Drive system, belts and controls.
Mower deck belts.
Tire pressures.
HydroGear oil tank.
Tightness of all nuts and bolts.
Battery fluid level.
7. * Engine oil. (Before each use or every 8 hours)
8. Electric blade clutch air gap setting.
CAUTION
Before performing any maintenance,
shut off engine, allow to cool.
ENGINE:
For engine operating and maintenance information, refer to the engine operating
and maintenance instructions furnished by the engine manufacturer, supplied with
each mower.
BATTERY: Check the fluid in the battery at frequent intervals.
Keep fluid level above the plates in each cell, using distilled water.
OFF-SEASON BATTERY STORAGE:
Identify each cable so cables can be reconnected to correct
terminals.
Disconnect cables from terminals.
ALWAYS disconnect ground cable first and reconnect last.
Charge battery.
DO NOT remove battery from mower.
Clean top of battery and terminals with baking soda and water.
Page 19
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CARE AND MAINTENANCE
CUTTER BLADE MAINTENANCE:
NOTE: Observe proper blade position prior to removal.
1. Safely raise front of mower.
2. Hold or block blade from turning.
Wear heavy, thick gloves when holding onto cutter blade,
avoid the sharp edge of the blade.
CAUTION
NOTE: Be sure blade is centered on pilot before tightening bolt to 60 ft. Ibs. torque.
BLADE
SHAFT
MOWE
R
PILOT HUB SHOULD BE
SEATED INSIDE BLADE
Page 20
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CARE AND MAINTENANCE
BELT TENSION
ENGINE TO MOWER DECK BELT:
P/N 9758
No adjustment required.
Correct belt tension is maintained through a fixed engine location and a spring loaded
idler system.
A pulsing movement of the belt idler will be observed both during engagement of the
electric blade clutch and actual operation of the mower deck.
NOTE: Engagement of the electric blade clutch switch may produce a sharp high
pitched chirp or squeal as the belt tension loading is absorbed by the idler
system. This is normal and not a sign of failure.
MOWER DECK SERPENTINE BELT:
P/N 6939
Refer to illustration for adjustment procedure.
NOTE:
Belt deflection or movement should be approximately 1/4" when measured
at mid-point between pulleys.
Periodically inspect both belt and idler systems.
Page 21
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CARE AND MAINTENANCE
FUEL SHUT OFF VALVE:
A fuel shut off valve is located at the bottom rear of each fuel tank.
Always turn the valve to the "OFF" position when the mower is stored or not in use.
LUBRICATION
CHASSIS:
Number of grease zerks used: (11)
(1) each mower deck carriage wheel caster and each wheel hub
(1) each mower deck shaft
LOCATIONS:
SERVICE INTERVALS:
Every 50 hours of operation
RECOMMENDED GREASE:
Name brand wheel bearing or multi-purpose grease
Rotate or spin each front wheel after 3 full pumps of the grease
gun. Repeat uitil the appearance of grease is noted around
each caster. Lubrication of the mower deck shafts will help
dispel moisture within the hub casting. Bearings are of a sealed
design.
Page 22
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CARE AND MAINTENANCE
REAR WHEELS:
The rear wheels of the Model ZTR 6601 are of an "offset" center design to both
compliment the articulation of the mowing deck and to provide stability when mowing
on sloped ground.
Slopes are a major factor related to loss-of-control and tip-over
accidents, which can result in severe injury or death. All slopes
require extra caution. If you cannot back up the slope or if you
feel uneasy on it, do not mow it.
CAUTION
REAR TIRES:
Tread Design:
Soft compound, low air pressure, "Turf Tamer" all
terrain tires have been fitted to the Model ZTR 6601.
For crating and shipment purposes "ONLY" air
pressure has been increased to 15 Ibs.
Shipping Air Pressure:
Prior to actual operational use of the mower, the air
pressure in each rear tire must be lowered to a
maximum of 5 Ibs.
Operational Air Pressure:
Page 23
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CARE AND MAINTENANCE
LUBRICATION
DRIVE SYSTEM:
The gears in the HydroGear gearbox are permanently lubricated using a special
grease which completely eliminates the need for any type of maintenance.
The HydroGear BDU-10L Series 70 hydrostatic transmissions are serviced with any
high quality 10W30 motor oil. The oil is filtered by a 10 micron oil filter.
Recommended service interval for filter is after the first 250 hours of operation, then
after every 400 hours of operation. If the system becomes contaminated by dirt of
other foreign debris, both oil and filter must be replaced immediately.
IMPORTANT:
Protect your investment:
Use Dixon P/N 5565 hydrostatic transmission oil filter ONLY.
The use of generic filters on the hydrostatic transmission oil
system is not recommended. While any number of automotive
filters may fit the thread pattern on the filter head, these filters
contain high pressure relief valves which will not permit oil flow to
the transmissions. This will result in an air /oc/cwith possible
damage.
Page 24
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CARE AND MAINTENANCE
HOT oil may cause burns.
Allow engine to cool before draining oil.
CAUTION
CHANGING THE ENGINE OIL:
1. The "snap lock" oil drain valve is located on the left side of the engine
crankcase.
2. Place a suitable container under the drain valve. The fitting of a short piece of
hose to the valve will help direct the oil.
3. Push the valve body in and twist to clear the detent notch.
4. Pulling the valve body outward will start the flow of oil.
NOTE: Refer to engine manufacturers recommendations for frequency of oil changes.
OPEN
CLOSED
OIL FILL:
1. Push the valve body in and twist into the detent notch.
2. Clean any spilled oil from engine and chassis.
3. Refill engine with type, and quantity of oil recommended by the engine
manufacturer in engine literature.
NOTE: Engine oil changes on the Model ZTR 6601 will require replacement of the oil
filter. These filters can be obtained from any authorized Kohler engine dealer.
PROTECT YOUR INVESTMENT:
The use of non-original oil or air filters may result in damage to the engine and a
loss of warranty. Listed on page 34 are the correct Kohler part numbers for the
Model ZTR 6601 engine.
PLEASE DISPOSE OF USED OILS AT PROPER COLLECTION CENTERS
PROTECT YOUR ENVIRONMENT
Page 25
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CARE AND MAINTENANCE
DECK LEVELING AND HEIGHT ADJUSTING PROCEDURE
1. On the right side of the machine^ the tie bar between the lift arms should be
adjusted so there is 20-1/2" between clevis eyes. If adjustment is necessary,
loosen jam nuts on both ends of the bar, and turn bar by hand until 20-1/2"
dimension is achieved. Tighten jam nuts securely back against both ends of the
bar.
On the left side of the machine, the tie bar should be adjusted so the angle of
the rear lift arm matches the angle of the right rear lift arm. If adjustment is
necessary, loosen jam nuts on both ends of the bar, and turn bar by hand until
angle of the two rear lift arms match. Tighten jam nuts securely back against
both ends of bar. See Figure 1.
2. Move lift handle to mid-range and use blade height gage (8241) to check
side-to-side and front-to-rear blade heights.
3. Adjust side-to-side blade heights to within 1/8", and adjust front-to-rear blade
heights so rear of blade is 0 to 1/4" higher than front of blade.
4. If any of the deck hanger bolts hang loose, thread it further into clevis until it is
snug. Take special care not to have an effect on the deck height.
5. Tighten jam nuts up against clevis.
Page 26
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CARE AND MAINTENANCE
DRIVE SYSTEM ADJUSTMENTS:
Adjustment of the drive system is limited to the actual function of the hydrostatic transmissions as
outlined below.
T-BOX TO HYDROSTAT BELT ADJUSTMENT:
Tighten the (2) J-bolts on the T-box mounting plate until each belt has 1/8th to 1/4th of
an inch free play or movement at a mid-point between the pulleys on the hydrostats and
T-box.
Page 27
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CARE AND MAINTENANCE
PARKING BRAKE CABLE ADJUSTMENT:
Position parking brake lever in the off or disengaged position.
This will allow the belt idler used on the engine to T-box to swing fully and apply tension
to the belt.
At this time, check that the cable which pulls the idler to a neutral position has
approximately 1-1/2 to 2 inches of free play.
If adjustment is required, loosen the lock nuts on the cable block and turn cable sleeve
in or out to achieve desired measurement.
Re-tighten lock nuts.
NOTE:
Cable must have the above dimension with parking brake released or
drive belt may slip, causing loss of power.
Page 28
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CARE AND MAINTENANCE
NEUTRAL ADJUSTMENT:
Swing upper control levers out into the neutral slots.
Raise upper body to the fully open position. Start
engine and disengage parking brake.
Caution should be used when releasing parking brake as mower may tend to creep or
move prior to adjustment.
If adjustment is required, loosen lock nuts at each end of the control rods and back off
the tension on each spring block.
Turn control rods in or out until neutral is obtained on each hydrostat.
Re-tighten lock nuts and tension bolts on spring blocks.
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CARE AND MAINTENANCE
FORWARD TRAVEL SPEED ADJUSTMENTS:
Stop engine, move levers to drive position, lightly push each upper control lever forward
until a resistance is felt on the lever.
At this time, check that the forward lever stops on the bottom of each lever are hitting
the stop blocks.
If adjustment is required, loosen the lock nuts on the lever stop and turn the bolt in until
the lever hits the stop block before resistance is felt in the hydrostat.
NOTE: Balance of travel speed. If mower tends to pull to either side, re-adjust lever
stop on fast side to slow the hydrostat down and even out the ground speed.
DO NOT SPEED UP THE SLOW SIDE, AS OVER STROKING OF THE
HYDROSTAT COULD RESULT IN DAMAGE TO THE UNIT.
If upper control levers are slightly offset following this adjustment, they can
be realigned by bending them slightly.
Page 30
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CARE AND MAINTENANCE
PROCEDURE FOR ELECTRIC CLUTCH ADJUSTMENT
Electric clutches require periodic Air Gap adjustments to extend the life of the clutch. Listed below
is both an Air Gap adjustment procedure and an Ohms test to check for a faulty coil within the
clutch. No replacement parts are available to repair a faulty assembly. The entire clutch must be
replaced.
A. AIR GAP ADJUSTMENT
1. Remove the clutch from the engine. This is recommended because it is easier to verify the gap.
2. Locate the three rivet joints which fasten the leaf springs
to the armature, (figure 1)
3. Rotate the pulley until these rivet joints are located
midway along the edge of the triangular field adapter,
(figure 1)
4. Locate the three holes in the brake plate, one near each
adjustment nut. (figure 2)
5. Insert a .012 inch feeler gauge into one of the three
windows. Be careful to position the feeler gauge
between the rotor and armature faces, (figure 3)
6. Tighten the adjusting nut adjacent to the window with the
feeler gauge inserted until the
gauge fits snugly between the rotor and armature. The gap should not be so tight that
the feeler gauge cannot be reinserted after removal.
7. Repeat Steps 5 and 6 at the other two windows.
8. Re-check the air gap at each window and make minor
adjustments as necessary to achieve a consistent
.012 inch air gap.
9. Reinstall the clutch to the engine. Be sure to torque the
mounting bolt back to 50 ft. Ibs.
B. OHMS TEST:
1. Disconnect clutch from mower wiring harness which is
located on the right side of the mower frame.
2. Set the multi-meter on RX1 and attach the two leads to
the two wires coming from the electric clutch.
3. The reading you receive should be between 2.4 to 2.9 OHMS.
4. If the resistance is outside this range the clutch coil is faulty.
5. If the clutch coil is faulty, the clutch must be replaced.
Page 31
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CARE AND MAINTENANCE
HYDROSTATIC TRANSMISSION OIL AND FILTER SERVICE
SERVICE INTERVALS:
OIL REQUIREMENTS:
1. Initial oil and filter service - 50 hours.
2. Every 250 hours thereafter.
Any high quality engine oil with an API classification of SG/CD is
recommended.
RECOMMENDED OIL WEIGHT:
10 W30
Another alternative that will provide excellent all climate
performance and extended time between oil changes is
a 15 W 50 synthetic engine oil.
OIL FILTER:
P/N 5565 - IMPORTANT
The oil filter is a special 10
micron design for use on
"vacuum or suction" oil flow
systems.
DO NOT:
Use automotive engine oil filters.
These filters require a "pressure"
to allow oil flow. Usage will result
in an "air-lock" condition with
possible damage.
Page 32
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CARE AND MAINTENANCE
WHEELS AND TIRES:
Correct tire pressure is important for correct operation of mower.
Front Tires
Rear Tires
1 1 X 4 X 5
20 X 11 X 8
Air Pressure 16-21 Ibs.
Air Pressure 5 Ibs.
(maximum pressure)
NOTE: Check lug nuts periodically for tightness.
ELECTRICAL SYSTEMS:
CLEANING THE MOWER:
Keep all connections clean and tight.
Wash mower periodically.
Clean above and below deck.
NOTE:
Allow mower to cool before washing. If bearings are
hot, they will draw moisture inside as they dry and cause
corrosion.
SERIAL NUMBERS:
begin with DM.
The serial number is located on frame at rear of engine, it will
WARRANTY:
Refer to Warranty Registration Form (P/N 8289).
PARTS/SERVICE:
service.
See your Dixon dealer for replacement parts, warranty or
PLEASE HELP PROTECT THE ENVIRONMENT BY AVOIDING ALL
CHEMICALS WHICH MAY DAMAGE OR CAUSE HARM TO PLANTS AND
ANIMALS IN YOUR AREA
Page 33
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STANDARD SERVICE PARTS LIST
MODEL ZTR 6601:
BLADES:
Hi-Lift:
P/N 9383
Engine To Mower Deck: Serpentine Belt:
Engine To T-Box: T-Box To Hydros:
P/N 9758
P/N 6939
P/N 1714
P/N 1765
Hydrostatic Transmission Filter:
P/N 5565
KOHLER AIR AND OIL FILTER PART NUMBERS:
Refer to engine manufacturers manual for recommendations regarding frequency of service
required for engine oil changes and air filter maintenance.
Protect your engine investment, use only original equipment filters.
Model ZTR 6601:
22HP
Pre-Cleaner Foam Element
Cartridge Air Cleaner
Engine Oil Filter
45083-01
45083-02
12050-01
IMPORTANT:
Some applications, extreme dirt conditions, or the use of a grass catcher may
require that the engine used on the Model ZTR 6601 be fitted with an OPTIONAL
Kohler fresh air filter system.
Listed below are the Kohler kit numbers required to adapt these components to the
engine. Consult your dealer or a Kohler engine service center for additional
information.
Check with Kohler Dealer for availability
Model ZTR 6601:
22HP
Page 34
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TROUBLESHOOTING
MOWER CUT QUALITY:
There are many variables that can effect the cut quality of any riding mower. Type and
conditions of grass, cut height setting, engine RPM and ground speed are some of the variables
that interact creating differences in cut quality. Examination of one or more of the above will
generally produce a quality cut.
The Troubleshooting Chart suggests practices and adjustments that may be helpful in
improving cut quality. Your Dixon ZTR dealer is also available to provide assistance to you.
SITUATION
REMEDY
CAUSES
Poor cut quality
Poor cut quality
Ground speed
Reduce mowing speed
Incorrect engine to
mower deck belt
Refer to page 34 for part numbers
Poor cut quality
Poor cut quality
Engine RPM too low
Dull or bent blade
Increase engine RPM to maximum
Sharpen or replace as required
Poor cut quality
Poor cut quality
Un-level mower deck
Consult your dealer
Grass buildup under
mower deck
Clean out underside of mower deck
Poor cut quality
Poor cut quality
Improper blades
Replace with original equipment
blade designed for the Model
ZTR 6601
Uneven tire pressures
Check and adjust as required per
operators manual
Page 35
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TROUBLESHOOTING
DRIVE SYSTEM:
SITUATION
CAUSES
REMEDY
Mower pulls to one
side or the other
Drive adjustment
Consult your dealer for repair
Drive system will not
function on either side
after changing
hydrostatic transmission
oil and filter
Incorrect oil filter
installed on system
Hydrostatic
transmissions are "air
locked", low or no oil
return to tank
Replace with correct Dixon P/N 5565
filter
Consult your dealer for repairs
Continued attempted operation may
result in damage to the system
Drive system functions
on one side only
Loss of set screw
tension on hydrostatic
transmission pulley
Consult your dealer for repairs
Loss of power and speed
on both hydrostatic
transmissions
Incorrect parking brake
cable adjustment
Incorrect or worn drive
belt
Refer to adjustment procedure
page 28.
Replace with correct belt
Page 36
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TROUBLESHOOTING
ELECTRICAL SYSTEM:
SITUATION
CAUSES
REMEDY
Starter will not
turn engine over
Circuit breaker engaged Push button to reset Consult
your dealer for repair
Starter will not
Dead battery
Charge battery
turn engine over
Battery discharge
Poor connections on
battery Battery water low
Wrong battery installed
in mower
Tighten or replace as required
Battery discharge
Battery discharge
Engine electrical system Have electrical system checked by
not functioning correctly your dealer
Engine being operated
at too low an RPM
Increase engine RPM Contact your
dealer for information
NOTE: Electrical system failures are generally simple in nature, always check the obvious
first and then move onto the more complicated parts used. Poor battery service,
loose connections, corrosion, frayed or broken wiring, are more likely than component
failure.
Page 37
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NOTES
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DIXON INDUSTRIES, INC
A BLOUNT COMPANY
AIRPORT INDUSTRIAL PARK
PO BOX 1569
COFFEYVILLE KS 67337 O945
316 251 2OOO
FAX 316 251 4117
OWNER
INFORMATION
DATE PURCHASED
MOWER MODEL NUMBER
PURCHASED FROM
MOWER SERIAL NUMBER
DATE OIL CHANGED:
DATE ENGINE TUNED:
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The Engine Exhaust from this product contains chemicals known to the
state of California to cause cancer, birth defects or other reproductive harm.
® Dixon and ZTR are registered trademarks of Dixon Industries, Inc.
DIXON INDUSTRIES, INC.
A BLOUNTCOMPANY
AIRPORT INDUSTRIAL PARK
PO BOX 1569
COFFEYVILLE KS 673370945
3162512000 FAX 316 251
4117
Part No. 8946
September 1995
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