Maintenance; Troubleshooting - MTD 660 Series Operator's Manual

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 trouble shooting chart for engine
problems.
ENGINE
Refer to the separate engine manual for engine
maintenance instructions.
Oil
Sump
\
\,
Oil Drain
Sleeve
Y
Figure 22
Optional Oil Drain Valve
Your lawn tractor may have a valve installed on the
engine for draining oil from the crankcase. See
Figure 23. To drain the oil, insert the 12" hose
(shipped loose with your unit) over the end of the
valve. Place the other end in a suitable container.
Push in black cap, rotate counterclockwise and pull
valve open. When oil is completely drained, push top
of valve in and rotate clockwise to close.
/
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.
12" Drain
Vatve
Figure 23
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 22. Remove drain plug and drain oil into a
suitable container.
Your unit is equipped with a replaceable in-line fuel
filter. Replace filter whenever contamination or
discoloration is noticed. Order replacement filter
through your authorized engine service dealer.
CLEANING ENGINE AND DECK
Any fuel or oil spilled on the machine should be
wiped off promptly. Grass, leaves, and other dirt
must not be left to accumulate around the cooling
fins of the engine or on any part of the machine.
Clean the underside of the deck after each mowing.
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