40 hours intervals (Do the following plus all
items done at 5-10 hour intervals)
Blade drive belt tension adjustment should be
checked at forty (40) hour intervals except
new belts should be checked at four to five (4-
5) hours and at eight to ten (8-10) hours
Change engine oil if using synthetic (Mobil 1 or
AmsOil), or change every eight (8) hours if not
synthetic oil*
Thoroughly clean complete mower
Grease caster wheel bearings, (2) points
Grease caster wheel pivots, (2) points
Grease blade spindle bearings, (2-3) points
Check tire pressure
Lubricate foot platform Operator Presence
Control pivots and control rod with water-
proof grease, (3) points
Lubricate hand control lever pivot shafts with
waterproof grease (4 places)
Lubricate throttle control cable with WD-40
Lubricate choke control cable with WD-40 (if
equipped)
Check hydraulic reservoir oil level; The level
should be about 4"-5" below the top of the oil
fill. Use synthetic oil: Mobil 1 10W-30 or
AmsOil 10W-40.
Inspect and replace worn tires
Adjust both parking brake shoes to firmly stop
wheels
160 hour intervals or annually (Do the follow-
ing plus all items done at 5-40 hour inter-
vals)
Clean or replace spark plugs (see engine
manual)
Replace engine oil filter with oil change*
Replace hydraulic oil filter with original Wright
25 micron filter at first 160 hour interval* (and
annually thereafter*)
Check hydraulic reservoir oil level*; The level
should be about 4"-5" below the top of the oil
fill; use synthetic oil: Mobil 1 10W-30 or
AmsOil 10W-40
Completely inspect for excessive wear in all
parts of mower, including control system,
replace worn parts
Check both set screws on each hydraulic
pump pulley and engine pulley (for pump
belt) for tightness, 2 each on pump pulleys, 1
on engine pulley, 5 total
Remove and clean battery box (if equipped)
Completely inspect for cracks in frame, tractor
frame or other steel parts and have autho-
rized dealer weld any found
Annually (Do the following plus all items
done at 5-160 hour intervals)
Replace hydraulic oil filter with original Wright
25 micron filter at 160 hour intervals and
annually thereafter*
Check hydraulic reservoir oil level; The level
should be about 4"-5" below the top of the oil
fill; use synthetic oil: Mobil 1 10W-30 or
AmsOil 10W-40
Replace all excessively worn spindle bearings
(after three years only)
Replace excessively worn main cutter deck
idler pulleys
Replace excessively worn caster wheels and
roller bearings
Replace excessively worn caster pivot bushings
Remove cotter pins and check torque on both
castle nuts on center of drive wheel hubs to at
least 175 ft.-lbs. Replace with new cotter pins.
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