![background image](http://html1.mh-extra.com/html/yard-machines/660-679-series/660-679-series_operators-manual_3265997019.webp)
19
SECTION 9: LUBRICATION
WARNING:
Always stop engine and
disconnect spark plug wire before
cleaning, lubricating or doing any kind of
work on lawn tractor.
STEERING GEARS
Lubricate teeth of steering gears with automotive
multi-purpose grease after every 25 hours of
operation or once a season. See Figure 22.
STEERING SHAFT
Lubricate steering shaft at least once a season with
light oil.
Figure 22
LINKAGE
Once a season lubricate all the pivot points on the
clutch, brake and lift linkage with SAE 30 engine oil.
WHEELS
The front wheels may be provided with optional
grease fittings. The rear wheels must be removed
from the axle for lubrication. Lubricate at least once
a season with automotive multi-purpose grease.
PIVOT POINTS
Lubricate all pivot points with light oil at least once a
season.
BALL JOINTS
The ball joints and drag link ends are permanently
lubricated.
SECTION 10: MAINTENANCE
WARNING:
Disconnect the spark plug
wire and ground against the engine before
performing any adjustments, repairs or
maintenance.
TROUBLE SHOOTING
Refer to the chart on page 24 for trouble shooting
engine problems.
ENGINE
Refer to the separate engine manual for engine
maintenance instructions.
Service air cleaner every 10 hours under normal
conditions. Clean every few hours under extremely
dusty conditions. To service the air cleaner, refer to
the separate engine manual packed with your unit.
The spark plug(s) should be cleaned and the gap
reset once a season. Spark plug replacement is
recommended at the start of each mowing season;
check engine manual for correct plug type and gap
specifications.
Maintain engine oil as instructed in the separate
engine manual packed with your unit. Read and
follow instructions carefully.
Optional Oil Drain Sleeve
Your lawn tractor has a plastic oil drain sleeve
packed with the loose parts for your convenience in
draining oil from the crankcase. To drain the oil,
snap small end of oil drain sleeve onto oil sump.
See Figure 23. Remove drain plug and drain oil into
a suitable container.
Figure 23
Steering
Gears
Steering
Gears
Oil Drain
Sleeve
Sump
Oil