Gravely 911530 - Pro 21 SCH - Manual (Page 17)

GB - 17
ENGINE/BLADE CONTROL
ADJUSTMENT
To adjust engine/blade control:
1. Loosen cable nuts away from bracket.
2. Squeeze z-bend bracket at engine end of
cable toward front of unit and hold in
place.
3. Pull cable down from bracket until there is
no slack in cable.
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.
7. If correct measurement cannot be set,
contact your local dealer.
DRIVE BELT REPLACEMENT
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 9).
4. Pull belt through opening under mower
pan and over blade.
Figure 8
1. Handlebar
2. Adjustment Hole
3. Support Bracket 4. Fasteners
5. Brace
5
1
3
4
4
2
2
OM1660
OM1010
Briggs & Stratton
OM1040
No slack
OM1061
1/8”
(3 mm)
OM1020
OM1030
1.325"-1.788"
(3.4 cm - 4.5 cm)
Briggs & Stratton
OM1051