54” Roller Bar Mower Kit
Part No. 1687079
Installation
For Prestige / 1800 / 2800 / GT / Conquest / 1700 / 2700 / YT
Instructions
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Kit Contents: 1687079, 54” Roller Bar
Ref Part No. Qty. Description
8
9
2860626 14 WASHERS
1720159
2
2
2
8
1
ROLLERS, 2-3/4 x 2
ROLLERS, 2-3/4 x 4-1/16
COTTER, Pins
ROLLER W/BUSHINGS
BAR
1
2
3
4
5
6
7
1723008A 1
SHAFT & BAR ASSEMBLY
NUT, Hex Adjusting
LOCKNUTS, Top Lock, 3/8-16
SLIDE
WASHER, 1/2
BOLT, Shoulder, 3/8-16
SPACERS
10 1678043
11 1918459
12 1678042
13 1723009
14 1733523A 1
15 1931352
16 1720142A 1
1704082
2860681
1677507
1924361
2172622
1701873
1
2
1
1
1
6
ROCKER ARM, 54 Mower
1
CARRIAGE BOLT, 3/8-16 x 1-1/2
TRUNNION SUPPORT
This kit is is to convert a frame hung mower to a
roller bar mower.
WARNING
Before beginning any service work turn off the
PTO, set the parking brake, turn off the ignition,
and disconnect the spark plug wire(s).
1
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Roller Bar Mower Kit
Installation Instructions
O
C
E
P
U
I
D
F
Z
S
Q
A
W
B
I
T
A
X
N
R
U
J
A
V
G
K
H
M
L
Y
Q
Figure 3. Install 54” Roller Bar
A. Capscrews, 5/16-18 x 3/4
(Existing)
B. Trunnion Support (New)
C. Crank & Trunnion Assembly
(Existing)
I. Nuts, 5/16-18 &
S. Chains, 4 Link (Existing)
T. Capscrews,
5/16-18 x 1-1/2 (Existing)
U. Locknuts, & Washers (Existing)
V. Slide (New)
Lockwashers (Existing)
J. Hair Pins (Existing)
K. Clevis Pins (Existing)
L. Adjustment Rods (Existing)
M. Rocker Arm Assembly (New)
N. Straps (Existing)
W. Washer, 1/2 (New)
X. Shoulder Bolt,
D. Capscrews,
5/16-18 x 1-1/4 (Existing)
E. Height of Cut Plate (Existing)
F. Arm (Existing)
G. Washer, 5/16 (Existing)
H. Upstop (Existing)
O. Locknuts, 1/2-13 (Existing)
P. Roller Bar Assembly (New)
Q. Locknut, 3/8-16 (New)
R. Carriage Bolt,
3/8-16 x 1-11/32 (New)
Y. Mower Deck (Existing)
Z. Eccentric Nut (New)
3/8-16 x 1-1/2 (New)
INSTALL 54” ROLLER BAR
3. Place upper trunnion on crank & trunnion assembly
(C) through hole in rocker arm assembly (M) and
roller bar assembly (P) as shown. Secure with 1/2-13
locknut (O).
1. Attach the rocker arm assembly (M, Figure 3) to the
mower deck (Y) with the straps (N) and capscrews
(A). Apply a thin film of grease to the inside of the
straps.
4. Place lower trunnion on crank & trunnion assembly
(C) through hole in mower deck (Y) roller bar assem-
bly (P) as shown. Secure with 1/2-13 locknut (O).
2. Attach the chains (S) to the rocker arm assembly (M)
using 5/16-18 x 1-1/2 capscrews (T), 5/16-18 lock-
nuts & washers O) as shown.
5. Connect the LH side roller bar assembly (P) to LH
side of rocker arm assembly (M) securing with 3/8-16
x 1-1/2 carriage bolt (R), eccentric nut (Z) and 3/8-16
locknut (Q).
Note: The four-link lift chain is bolted to the mower deck
using the third link. This is correct for most mowing
applications. If mowing ditches or other surfaces that
require the mower to travel below its normal range, use
the fourth link.
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Installation Instructions
Roller Bar Mower Kit
6. Connect the LH side roller bar assembly (P) to LH
side of mower deck (Y) securing with 3/8-16 x 1-
11/32 shoulder bolt (X), 1/2 washer (W), slide (V),
and 3/8-16 locknut (Q).
7. Attach height of cut plate (E) and arm (F) to rocker
arm assembly (M). Secure with 5/16-18 x 1-1/4 cap-
screws (D) and 5/16-18 nuts & washers (I).
8. Attach the trunnion support (B) to mower deck (Z).
Secure with 5/16-18 x 3/4 capscrews (A).
9. Attach the upstops (H) to mower deck (Z). Secure
with 5/16-18 x 3/4 capscrews (A) and washers (G).
10. Attach adjustment rod (L) to rocker arm assembly (M)
using clevis pin (K) and hair pin (J).
Refer to the Mower Deck Removal & Installation section
in these instructions to install and level mower deck.
Retain these instructions as a supplement to the original
Operator’s Manual.
MOWER DECK REMOVAL &
INSTALLATION
Chain Lift Models
Figure 4. Pivoting Gauge Wheels - Select Models
A
C
WARNING
Engage parking brake, disengage PTO, stop
engine and remove key before attempting to
install or remove the mower.
B
Muffler and surrounding areas may be hot.
Removing the Mower Deck
1. Park the tractor, fully lower the attachment lift, turn off
the PTO, turn off the engine, remove the key, and
engage the parking brake. If equipped, pivot the
gauge wheels into sliding position (see Figure 4).
D
Figure 5. Mower Lift
A. Lift Hook
B. Lift Chain
C. PTO Belt
D. Idler Arm
2. Place mower in the lowest cutting position using the
mower height control.
3. Use the idler arm (D, Figure 5) to release tension on
the PTO belt, and remove belt from the PTO pulley.
5. Turn the wheels straight ahead. Pull back on spring-
loaded lever (B, Figure 6) and lift mower hitch off of
the tractor brackets (A).
4. Pull down on the lift hooks (A, Figure 5) and unhook
the lift chains (B).
6. Turn wheels fully left, and slide mower deck out from
under the right side of the tractor.
CAUTION
The muffler and surrounding areas may be hot.
4
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Roller Bar Mower Kit
Installation Instructions
Installing the Mower Deck
NOTE: Perform mower installation on a hard, level sur-
face such as a concrete floor.
A
1. Park the tractor, fully lower the attachment lift, turn off
the PTO switch, turn off the engine, remove the key,
and engage the parking brake. Turn the wheels fully
to the left.
2. Place mower in the lowest cutting position using the
mower height adjuster. Slide the mower deck under
the right side of tractor so that the mower hitch is
aligned with front tractor hitch (A, Figure 6).
B
3. See Figure 6. Turn wheels straight. Pull back on the
spring-loaded lever (B) while lifting up on the mower
hitch. Install the mower hitch onto tractor hitch brack-
ets (A). When properly installed, the spring-loaded
lever should seat fully underneath the brackets (A).
Figure 6. Mower Hitch
A. Tractor Hitch Brackets
B. Spring-Loaded Lever
4. See Figure 5. Connect the mower lift chains (B) to
the the tractor lift hooks (A).
NOTE 50” & 54” Mowers: The four-link lift chain is bolted
to the mower deck using the third link. This is correct for
most mowing applications. If mowing ditches or other
surfaces that require the mower to travel below its nor-
mal range, use the fourth link.
5. See Figure 5. From left side of tractor, use the idler
arm (D) to relieve belt tension. Install belt (C) onto the
PTO pulley.
6. If equipped, raise the attachment lift and rotate the
front gauge wheels (Figure 4) into cutting position.
5
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Installation Instructions
Roller Bar Mower Kit
Leveling The Mower
If the cut is uneven, the mower may need leveling.
Unequal or improper tire pressure may also cause an
uneven cut. Make sure tire pressure is correct as speci-
fied in Checking Tire Pressure.
A
B
SIDE-TO-SIDE LEVELING
1. With the mower installed, place the tractor on a
smooth, level surface such as a concrete floor. Turn
the front wheels straight forward.
2. Check for bent blades and replace if necessary.
3. Place the mower in mid-cut position. Arrange the out-
side mower blades so that they are pointing from
side-to-side.
Figure 7. Leveling The Mower Side-to-Side Eccentric
Nut Models
A. Outside Nut
B. Eccentric Nut
4. Measure the distance between the outside tips of
each blade and the ground. If there is more than 1/8”
(3mm) difference between the measurements on
each side, proceed to step 5. If the difference is 1/8”
(3mm) or less, proceed to step 6.
5. See Figure 7. Loosen the outside nut (A). Turn the
eccentric nut (B) to raise or lower left-hand side of
mower. When mower is level, hold the eccentric nut
while tightening the outside nut.
A
B
NOTE: 44”, 50”, & 54” Mowers. When using a turbo col-
lection system, raise the discharge side of the mower
approximately 1/4” (6mm) to compensate for turbo
assembly weight. Check the level of the cut grass
and adjust the 1/4” (6mm) measurement as neces-
sary for a smooth, even cut.
Figure 8. Front to Back Leveling
A. Rear Nut B. Front Nut
FRONT-TO-BACK LEVELING
NOTE: 54” mowers have two adjustment rods that
should be adjusted simultaneously.
6. Arrange the blades so they face front-to-back.
7. Measure the distance from the ground to the front tip
of the center blade, and from the ground to rear tips
of left-hand and right-hand blades.
Front tip of the center blade should be 1/4" (6mm)
higher than rear tips of left-hand and right-hand
blades. If not, proceed with steps 8 - 9.
8. To raise front of mower deck, loosen front nut (B) and
turn rear nut (A, Figure 8) against bracket. To lower
front of mower deck, loosen rear nut (A) and the
bracket will move backwards to lengthen rod.
9 .Re-check the blade measurement then tighten the
front nut (B) against the bracket to secure.
Form No. 1729601
Revision:01
TP 200-4191-01-SK-SMAN
MANUFACTURING, INC.
Briggs & Stratton Yard Power Products Group
Copyright © 2007 Briggs & Stratton Corporation
Milwaukee, WI USA. All Rights Reserved
500 N Spring Street / PO Box 997
Port Washington, WI 53074-0997 USA
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