elements used on gasoline engines may cause some
individuals to opt for a less expensive part.
The filter element must be sufficient size and
construction to withstand stresses, caused by rapid cycling
of the air volume demanded by the engine, without cracking
or tearing under fatigue and pressure (especially diesel
engines). Therefore, Hustler Turf Equipment and the engine
manufacturers have carefully selected a reliable filter
designed to fit the needs of the engines. The filter specified
is a Donaldson filter, Hustler part number 785261.
Owners should be reminded that failure to use original
equipment replacement parts is an “alteration” and will not
be considered for warranty in the event of engine damage.
Recommended service procedure
1. Release clamps and remove element. Clean the
canister with a damp cloth.
2. Before installing a new element, inspect it by placing a
bright light inside and rotate the element slowly,
looking for any holes or tears in the paper. Also check
gaskets for cuts or tears. Do not attempt to use a
damaged element which will allow abrasive particles
to enter the engine.
3. Reinstall the dust cup. Make sure it seals all the way
around the air cleaner body, then tighten the clamps.
4. Check all fittings and clamps periodically for tightness
and inspect hoses for holes or cracks.
5. Periodically check the intake hose for signs of ingested
dust. Locate and repair the source of ingested dirt.
6. Never operate a machine without an air filter installed.
General engine maintenance
Detailed instructions and recommendations for break-in
and regular maintenance are specified in the respective
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 engine manufacturer. Special
attention should be paid to applicable data which will not be
duplicated here.
Burnishing the electric clutch
Ogura clutch only
WARNING: To insure maximum performance
and life, it is necessary to burnish the clutch.
Burnishing the electric clutch (Fig. 4-12) will develop
better contact between the armature and rotor, helping to
develop higher torque capabilities without slipping. The
warranty on the new clutch will be voided if it is not
burnished properly.
Use the following procedure to burnish the clutch:
1. Check the air gap between armature and rotor. Gap
should be .012” to .018”.
2. Cycle the clutch on and off 6 times (15 seconds on and
15 seconds off) with the engine operating at half
throttles, approximately 1500 rpm.
Warner clutch only
Hydro WalkBehind units, 927129 and 927137, use a
Warner clutch and do not require burnishing of air gap
adjustments.
Belt replacement
Figures 4-13 and 4-14 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 may occur when operating on a slope.
Inspect the belt pulley grooves and flanges for wear. A
778845 Rev. 7/04
4-7
Figure 4-13
1
3
2
4
5
1. Pump belt
2. Engine pulley
3. Pump idler pulley
4. Pump idler arm
5. Deck belt
6. Pump pulley
7. Electric deck clutch
8. Cold weather pump
clutch chain
9. Pump idler spring
6
6
8
7
9
Viewed from
bottom for unit
Figure 4-12
Electric
clutch
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