Maintenance - MTD 660 Series Owner's Manual

STEERING GEARS
Lubricate teeth of steering gears with autc_notive
multi-purpose grease after every 25 hours of op ,=ration
or once a season. See figure 16.
STEERING SHAFT
Lubricate steering shaft at least once a seascn with
light oil.
Gears
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 may have 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
17. Remove drain plug and drain oil into a suitable
container.
Oil
FIGURE 16.
TRANSAXLE
The transaxle is lubricated at the factory and dces not
require checking. If disassembled for any r,_ason,
lubricate with 10 oz. of Shell grease, part numb_ _r737-
0148.
WHEELS
The front wheels may be provided with grease l ittings.
The rear wheels must be removed from the exle for
lubrication. Lubricate both front and rear wh_els at
least once a season with automotive multi-p ]rpose
grease.
PIVOTPOINTS
Lubricate all pivot points with light oil at least ,_nce a
season.
MAINTENANCE
m
WARNING: Disconnect the spar_ plug
wire(s) and ground against the ,;ngine
before performing any adjust nents,
repairs or maintenance.
TROUBLE SHOOTING
Refer to the chart on page 19 for trouble stooting
engine problems.
ENGINE
Refer to the separate engine manual for _pngine
maintenance instructions.
Service air cleaner every 10 hours under _ormal
conditions. Clean every few hours under exl'emely
dusty conditions. To service the air cleaner, refe to the
separate engine manual packed with your unit.
Oil Drain
Sleeve
FIGURE 17.
FUELFILTER
Your unit is equipped with a replaceable in-line fuel
filter. Replace filter whenever contamination or dis-
coloration is noticed. Order replacement filter through
your authorized engine service dealer.
CLEANING ENGINEAND DECK
Any fuel or oil spilled on the machine should be wiped
off promptly. Grass, leaves, and other dirt must net 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.
CUTTING BLADES
A, Removal for Sharpening or Replacement
&
WARNING: Be sure to disconnect and
ground the spark plug wire(s) and remove
ignition key before working on the cutting
blade to prevent accidental engine start-
ing. Protect hands by using heavy gloves
or a rag to grasp the cutting blades.
1. Remove the hex flange nut which holds the blade
to the blade spindle.
2. Remove the blade from the spindle.
14