Drive Belt Replacement - Gravely 911094 - Pro 21SCH, 911095 - Pro 21CH, 911098 - LM21S, 911100 - LM21SW, 911394 - Pro 21SCH Owner's/Operator's Manual

4. Tighten lower
cable nut to 1/8"
(3 mm) below
bracket.
Release z-bend
bracket.
5. Tighten upper
cable nut until
bracket is secure
between cable
nuts.
6. Engage engine/blade control. Measure
distance between middle of z-bend and
cable bracket. Measurement should be
as shown below.
Briggs Engines:1.325"-1.788" (3.4 cm - 4.5 cm)
Honda Engines: 1.65"-1.69" (4.2 cm - 4.3 cm)
7. If correct measurement cannot be set,
contact your local dealer.
OM1020
OM1030
OM1051

DRIVE BELT REPLACEMENT

(self-propelled models)
To remove drive belt:
1. Disconnect spark plug wire.
2. Set the right rear wheel to its lowest
cutting height, and the left rear wheel to
the third cutting height. This position
provides clearance between friction disc
and drive sheave.
3. Remove belt from the idler, then the
drive sheave, and finally, the engine
pulley (Figure 13).
4. Pull belt through opening under mower
pan and over blade.
5. Make sure the idler pulley turns and the
idler arm moves freely.
6. Reinstall drive belt in reverse order.
IMPORTANT: Be sure the belt seats in
sheave and pulley grooves with the idler
touching the back (flat) side of belt.
7. Adjust rear wheels to the same cutting
height.
5
4
1. Blade
2. Idler
3. Drive Sheave
4. Drive Belt
GB - 19
6
3
5. Engine Pulley
6. Bolt, Lock
Washer &
Flat Washer
Figure 13
1
2