Adjustments; General Precautions; Engine Belts - Jacobsen HR800 Safety, Operation & Maintenance Manual

6 ADJUSTMENTS

6Adjustments
6.1

GENERAL PRECAUTIONS ________________________________________________________

Before you clean, adjust or repair this equipment, move the mow switch to the OFF position, lower front and rear
cutting units to the ground, turn on the parking brake switch, stop the engine and remove the key.
Make sure the mower is parked on a solid and level surface. Never work on a mower that is lifted only by the jack.
Always use the jack stands.
A qualified technician must always do adjustments and maintenance. If the correct adjustments can not be made,
contact your Jacobsen Dealer.
Inspect the equipment according to the maintenance schedule and keep complete records.
a Keep the equipment clean.
b Keep all moving parts correctly adjusted and lubricated.
c Replace worn or damaged parts before you operate the mower.
d Keep all fluids at the correct level.
e Keep the shields in position and all hardware tight.
f Keep the tires correctly inflated.
g When you make the adjustments or repairs, do not wear jewelry or loose fitting clothing.
Refer to the illustrations in the Parts Manual for the removal and assembly of parts.
When you discard hazardous materials (batteries, lubricants, fuel, anti-freeze), follow your local, state or federal-
recommended procedures.
6.2

ENGINE BELTS ___________________________________________________________

Check And Adjust The Fan Belt:
The fan belt tension is adjusted to prevent the stress on the alternator bearings
and to prevent movement on the alternator pulley. Use the procedure shown
below to check the belt tension at the center of the belt between crank shaft
and alternator pulleys.
Alternator Belt
1. Loosen the alternator bolt (A) and the pivot bolt below the alternator.
2. Move the alternator to tighten or loosen the belt. A deflection of 13/32 to
15/32 in. (10 to 12 mm) is needed at the center (B) with a load of 22 lbs
(10kgf/98N) for a new belt.
3. Tighten the bolts.
AC Compressor Belt (Mowers with Cab Only)
1. Loosen AC compressor pivot hardware (C).
2. Adjust tensioner bolt (D) as required to tighten or loosen the belt. A
deflection of 3/16 in. (4.7 mm) is needed at the center (E) with a load of
4.62 lbs (2.09 kgf/20.5 N).
3. Tighten the pivot hardware (C).
en-63
!
WARNING
Mowers with 2 Post ROPS
A
B
Mowers with Cab
A
B
D
C
C
E