3 ADJUSTMENTS
8
3
ADJUSTMENTS
3.1 GENERAL ________________________________________________________________
1.
Adjustments and maintenance should always be
performed by a qualified technician. If proper
adjustment cannot be made, contact an authorized
Jacobsen Dealer.
2.
Replace, do not adjust, worn or damaged components.
3.
Do not wear jewelry or loose fitting clothing when
making adjustments or repairs.
4.
Do not change governor settings or overspeed the
engine.
3.2
FAN BELT________________________________________________________________
Inspect and adjust new belt after first ten hours of
operation. Adjust every 100 hours thereafter.
1.
Adjust alternator pulley so belt (B) deflects 9/32 to
11/32 in. (7 to 9 mm) with a 22 lb. (10 kg) push at
midspan between pulleys.
2.
If tension is incorrect, loosen alternator mounting
bolts (A), and adjust alternator until proper belt
tension is achieved. Tighten hardware (A).
Figure 3A
3.3
PUMP DRIVE BELT ________________________________________________________
Adjust reel pump belt (C) to deflect 1/4 in. (6 mm) with a
force of 5-7 lb. (2-3 kg) applied at midspan.
1.
Loosen hardware (D and E).
2.
Move pump/clutch assembly down to increase
tension on belt (C) then tighten hardware (D and E).
3.
Torque hardware (D and E) to 27 - 33 ft. lb. (37-45
Nm).
Figure 3B
WARNING
To prevent injury, lower implements to the ground,
disengage all drives, engage parking brake, stop engine,
and remove key from ignition switch before making any
adjustments or performing maintenance.
Make sure the mower is parked on a solid and level
surface. Never work on a mower that is supported only
by the jack. Always use jack stands.
If only the front or rear of the mower is raised, place
chocks in front of and behind the wheels that are not
raised.
!
CAUTION
Be careful to prevent entrapment of the hands and
fingers between moving and fixed components of the
machine.
!
A
B
D
D
E
C
Diesel Engine
Gasoline En
