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General engine maintenance
Detailed instructions and recommendations for break-in
and regular maintenance are specified in the Engine
Owner’s manual. Please refer to this manual for engine
servicing, lubricating oil levels with quality and viscosity
recommendations, bolt torques, etc. The engine warranty is
backed by the manufacturer. Special attention should be
paid to applicable data which will not be duplicated here.
IMPORTANT: Refer to the Kohler EFI engine owner’s
manual for specific cleaning instructions.
Belt replacement
Figures 4-15, 4-16, 4-17, 4-18 and 4-19 show diagrams
and descriptions of the unit’s belt drive systems.
Inspect these belts frequently for wear and serviceability.
Replace a belt that shows signs of severe cuts, tears,
separation, weather checking and cracking, or burns caused
by slipping. Slight raveling of belt covering does not
indicate failure, trim ravelings with a sharp knife.
WARNING: If the pump belt fails, loss of
control will occur especially when operating on a
slope. If you lose steering control while
operating the machine, place the steering
control levers in the park brake position
immediately. Inspect the machine and involve
your Hustler dealer to resolve the problem
before continuing to operate.
Inspect the belt pulley grooves and flanges for wear. A
new belt, or one in good condition, should never run against
the bottom of the groove. Replace the pulley when this is
the case, otherwise belt will lose power and slip excessively.
Never pry a belt to get it on a pulley as this will cut or
damage the fibers of the belt covering.
Keep oil and grease away from belts, and never use belt
dressings. Any of these will destroy the belt composition in
a very short time.
Mower blade maintenance
Check the mower blades daily, they are the key to power
efficiency and well groomed turf. Keep them sharp, a dull
blade will tear rather than cut the grass, leaving a brown
ragged top on the grass within a few hours. A dull blade
also requires more power from the engine.
Replace any blade which is bent, cracked or broken.
WARNING: Never attempt to straighten a bent
blade by heating, or weld a cracked or broken
blade as the blade may break and cause serious
injury.
DANGER: Never work with blades while
engine is running or deck clutch is engaged.
Always place deck clutch in the disengaged
position, place steering control levers in the park
brake position and turn engine off. Block up
mower when you must work under it. Wear
gloves when handling blades. Always check for
blade damage if mower strikes rocks, branches
or other foreign object during mowing!
Mower blade removal
On spindles with blade saddles, use a 3/4" wrench to
remove the 1/2" cap screw holding the blade to the spindle
saddle from underneath. On spindles without blade saddles,
use a 15/16" wrench to remove the 5/8" cap screw holding
the blade to the spindle shaft from underneath. NOTE: On
rear discharge decks the right blade rotates opposite of the
other two blades. Therefore, it has a left hand threaded bolt.
It will be necessary to loosen it by turning it clockwise.
Figure 4-15
1
3
2, 6
4
5
1. Pump belt
2. Engine pulley
3. Pump idler pulley
4. Pump idler arm
5. Pump pulley
6. Electric deck clutch
7. Pump idler spring
7
Viewed from
bottom for unit
5
Figure 4-16
1
Deck Belt Drive Layout
1. Spindle drive belt
2. Deck blade spindle pulley
3. Spindle belt tension idler
4. Spindle belt tension idler spring
(9.0" at operation)
5. Deck belt idler
6. Idler arm
2
2
2
6
4
5
3
5
4-11
375527_0406
Side dischage deck