1
Installation
Instructions
54”Roller Bar Mower Kit
Part No. 1687079
For Prestige / 1800 / 2800 / GT / Conquest / 1700 / 2700 / YT
This kit is is to convert a frame hung mower to a
roller bar mower.
Before beginning any service work turn off the
PTO, set the parking brake, turn off the ignition,
and disconnect the spark plug wire(s).
WARNING
8
Kit Contents: 1687079, 54” Roller Bar
Ref Part No. Qty. Description
1 1723008A 1 SHAFT & BAR ASSEMBLY
2 1704082 1 NUT, Hex Adjusting
3 2860681 2 LOCKNUTS, Top Lock, 3/8-16
4 1677507 1 SLIDE
5 1924361 1 WASHER, 1/2
6 2172622 1 BOLT, Shoulder, 3/8-16
7 1701873 6 SPACERS
8 2860626 14 WASHERS
9 1720159 2 ROLLERS, 2-3/4 x 2
10 1678043 2 ROLLERS, 2-3/4 x 4-1/16
11 1918459 2 COTTER, Pins
12 1678042 8 ROLLER W/BUSHINGS
13 1723009 1 BAR
14 1733523A 1 ROCKER ARM, 54 Mower
15 1931352 1 CARRIAGE BOLT, 3/8-16 x 1-1/2
16 1720142A 1 TRUNNION SUPPORT
7
15
1
2
3
4
5
6
7
8
9
10
8
11
3
7
14
11
8
16
10
8
12
7
8
8
12
9
12
8
8
7
12
8
12
13
C
B
A
F
E
M
L
N
A
I
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Installation Instructions Roller Bar Mower Kit
Figure 2. Remove Frame Hung
Components
A. Capscrew, 5/16-18 x 3/4
B. Bracket & Wheel Assembly, RH
C. Trunnion Assembly
D. Capscrews, 5/16-18 x 1-1/4
E. Arm
F. Height of Cut Plate
G. Lockwashers, 5/16
H. Nuts, 5/16-18
I. Hair Pins
J. Clevis Pins
K. Rocker Shaft Assembly
L. Locknut, 1/2-13
M. Stop, Height of Cut
N. Adjustment Rods
O. Straps
P. Bracket & Wheel Assembly, LH
Q. Locknuts, & Washers
R. Capscrews, 5/16-18 x 1-1/2
S. Chains, 4 Link
REMOVAL 54”FRAME HUNG
1. Disconnect hair pins (I, Figure 2) and clevis pins (J)
from adjustment rods (N). Remove adjustment rods
(N) from rocker arm assembly (M). Reconnect hair
pins (I) and clevis pins (J) into adjustment rods (N) to
prevent loss.
2. Remove and retain 5/16-18 x 1-1/4 capscrews (A).
Remove and bracket (B).
3. Remove and retain 5/16-18 x 1-1/4 capscrews (D),
arm (E) and crank & trunnion assembly (C). Remove
and retain nuts (H), lockwashers (G) and height of cut
plate (F).
4. Remove and retain nuts (L). Remove and discard
stop (M).
5. Remove and retain straps (O) capscrews (A).
Remove and discard rocker arm assembly (K).
6. Remove and retain 5/16-18 x 1-1/2 capscrews (R)
locknuts & washers (Q), and chains (S).
O
A
P
M
J
S
R
Q
Q
G
H
D
3
Roller Bar Mower Kit Installation Instructions
C
B
A
F
E
G
H
M
J
K
L
P
O
Figure 3. Install 54” Roller Bar
A. Capscrews, 5/16-18 x 3/4
(Existing)
B. Trunnion Support (New)
C. Crank & Trunnion Assembly
(Existing)
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)
I. Nuts, 5/16-18 &
Lockwashers (Existing)
J. Hair Pins (Existing)
K. Clevis Pins (Existing)
L. Adjustment Rods (Existing)
M. Rocker Arm Assembly (New)
N. Straps (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 1-1/2 (New)
S. Chains, 4 Link (Existing)
T. Capscrews,
5/16-18 x 1-1/2 (Existing)
U. Locknuts, & Washers (Existing)
V. Slide (New)
W. Washer, 1/2 (New)
X. Shoulder Bolt,
3/8-16 x 1-11/32 (New)
Y. Mower Deck (Existing)
Z. Eccentric Nut (New)
I
Q
INSTALL 54”ROLLER BAR
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.
2. Attach the chains (S) to the rocker arm assembly (M)
using 5/16-18 x 1-1/2 capscrews (T), 5/16-18 locknuts & washers O) as shown.
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.
R
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).
4. Place lower trunnion on crank & trunnion assembly
(C) through hole in mower deck (Y) roller bar assembly (P) as shown. Secure with 1/2-13 locknut (O).
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).
A
A
N
S
T
U
U
X
W
Q
V
Y
Z
D
I
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Installation Instructions Roller Bar Mower Kit
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).
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.
4. Pull down on the lift hooks (A, Figure 5) and unhook
the lift chains (B).
WARNING
Engage parking brake, disengage PTO, stop
engine and remove key before attempting to
install or remove the mower.
Muffler and surrounding areas may be hot.
A
B
C
D
Figure 4. Pivoting Gauge Wheels - Select Models
Figure 5. Mower Lift
A. Lift Hook C. PTO Belt
B. Lift Chain D. Idler Arm
MOWER DECK REMOVAL &
INSTALLATION
Chain Lift Models
CAUTION
The muffler and surrounding areas may be hot.
6. Connect the LH side roller bar assembly (P) to LH
side of mower deck (Y) securing with 3/8-16 x 111/32 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 capscrews (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.
5. Turn the wheels straight ahead. Pull back on springloaded lever (B, Figure 6) and lift mower hitch off of
the tractor brackets (A).
6. Turn wheels fully left, and slide mower deck out from
under the right side of the tractor.
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Roller Bar Mower Kit Installation Instructions
A
B
Figure 6. Mower Hitch
A. Tractor Hitch Brackets
B. Spring-Loaded Lever
Installing the Mower Deck
NOTE: Perform mower installation on a hard, level surface such as a concrete floor.
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).
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 brackets (A). When properly installed, the spring-loaded
lever should seat fully underneath the brackets (A).
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 normal 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.
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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 specified in Checking Tire Pressure.
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 outside mower blades so that they are pointing from
side-to-side.
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.
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 necessary for a smooth, even cut.
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.
Figure 8. Front to Back Leveling
A. Rear Nut B. Front Nut
A B
Figure 7. Leveling The Mower Side-to-Side Eccentric
Nut Models
A. Outside Nut
B. Eccentric Nut
A
B
MANUFACTURING, INC.
500 N Spring Street / PO Box 997
Port Washington, WI 53074-0997 USA
Form No. 1729601
Revision:01
TP 200-4191-01-SK-SMAN
Briggs & Stratton Yard Power Products Group
Copyright © 2007 Briggs & Stratton Corporation
Milwaukee, WI USA. All Rights Reserved
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