MTD 400 - Air Filter

Reinstall the drain plug and tighten it securely.3.
Refill with the recommended oil and check the oil level. 4.
Refer to the Assembly & Set-up section for instructions on
how to properly check the oil level.
Reinstall the oil fill cap securely.5.
Used motor oil may cause skin cancer if
repeatedly left in contact with the skin for prolonged
periods. Although this is unlikely unless you handle
used oil on a daily basis, it is still advisable to
thoroughly wash your hands with soap and water as
soon as possible after handling used oil.
NOTE: 
compatible with the environment. We suggest you take it in a
sealed container to your local service station for reclamation. Do
not throw it in the trash or pour it on the ground.
Oil Recommendations
SAE 10W-30 is recommended for general, all temperature use.
When adding oil to the engine, refer to viscosity chart below.
Engine oil capacity is 600 ml (approximately 20 oz.). Do not over-
fill. Use a 4-stroke, or an equivalent high detergent, premium
quality motor oil certified to meet or exceed U.S. automobile

Motor oils classified SG, SF will show this designation on the
container.


service life.
Air Filter

or every 100 operating hours; more often if used in extremely
dusty conditions.
Never use gasoline or low flash point
solvents for cleaning the air cleaner element. A fire
or explosion could result.
NOTE: Never run the engine without the air cleaner. Rapid
engine wear will result.
1.
Fig. 6-2. Replace paper element when dirty or damaged.
Clean foam element or replace when damaged.
To clean foam element, separate it from the paper element 2.
and wash in liquid detergent and water. Allow to dry
thoroughly before using. Do not oil the foam element.
Spark Plug Service


plug removed.
If the engine has been running, the

muffler.
To ensure proper engine operation, the spark plug must be
properly gapped and free of deposits.
Remove the spark plug boot and use a spark plug wrench 1.
to remove the plug. See Fig. 6-3.

Drain

Air






-30º -20º -10º 0º
0º 20º 40º-20º
10W-30
0W-30
-40º
Synthetic
21se c t i O n 7 — en g i n e Ma i n t e n a n c e