MTD 112-638A - Manual (Page 13)

CAUTION
Do not direct the stream of water at
a hot engine as damage to the
engine may result. Be sure spark
plug wire is disconnected.
ENGINE OIL
Check oil level before starting engine and after
every 5 hours of operation. Add oil as necessary to
keep level full to full mark on dipstick. Engine
should be in a level position when checking oil.
Change oil after first 5 hours of operation.
Thereafter change every 25 hours. Change oil
while engine is warm. Oil may be drained thru
drain on bottom of engine. To drain completely,
always place engine level when draining thru the
bottom. Oil capacity 1V4 pints. See figure 23.
Drain ^
Plug , ^
OFF-SEASON STORAGE
If the machine is to be inoperative for a period
longer than 30 days, the following procedures are
recommended:
1. Working outdoors, drain all fuel from the fuel
tank. Use a clean dry cloth to absorb the small
amount of fuel remaining in the tank. Then run
the engine until all fuel in the carburetor is ex­
hausted.
V arn * ng *
Do not drain fuel while smoking, or
if near an open fire.
2. Drain all the oil from the crankcase (this
should be done after the engine has been
operated and is still warm). Refill the
crankcase with clean new oil.
3. Disconnect the spark plug wire and remove
the spark plug from the cylinder. Pour about 2
or 3 tablespoons of engine oil Into the
cylinder. Turn the engine over several times to
spread out the oil. Replace the spark plug, but
do not connect the wire.
4. Clean the engine and the entire mower
thoroughly.
5. Lubricate all lubrication points.
FIGURE 23.
AIR CLEANER
Service air cleaner every 25 hours under normal
conditions. Clean every few hours under extreme­
ly dusty conditions. Poor engine performance and
flooding usually indicates that the air cleaner
should be serviced. To service the air cleaner,
refer to the engine manual packed with your unit.
SPARK PLUG
The spark plug 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.
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