221 HP/LHP
6
Oil change
To change the oil:
1. Remove the rear engine cover by following the pro-
cedures described in the rear engine cover section
of this chapter.
2. Place a suitable container under the oil drain plug.
See Figure 2.2.
3. Remove the dip stick.
4. Remove the drain plug using a 10 mm wrench.
5. Once the oil stops draining, install the drain plug.
NOTE: Tighten the drain plug to a torque of 124-159
in-lbs (14-18 Nm).
6. Fill the crankcase with 17 - 20 fl.oz (0.5 - 0.6 liters)
of a high quality SAE 5W-30 oil
with a SF/SG API
rating or better
.
7. Test run the snow thrower in a safe area before returning it to service.
NOTE: Changing the oil at the end of the snow season is better the changing it at the start of the snow season.
Oil turns acidic with use, and it is better to store the engine with fresh oil in the crankcase.
Fuel
Gasolines currently on the market are not pure gas. Today’s fuels have alcohol and other additives in them to
reduce emissions. The fuel make up can vary seasonally and geographically.
Fuel with alcohol added to it is sometimes referred to as “oxygenated fuel”. The extra oxygen carried by the eth-
anol increases the oxidation of the fuel. This speeds up the process that causes the fuel to go bad.
Excessive alcohol in fuel creates a lot of problems for gasoline engines. One of the biggest problems is that alco-
hol attracts and holds water. This corrodes the metal components of the fuel system, especially the carburetor. Alco-
hol also does not produce as much heat as gasoline when burnt. This results in less power for the engine.
A 10% alcohol mix (E10) is acceptable for MTD engines. Anything higher than that will result in performance
issues.
NOTE: E85 and E15 fuels are not to be used in any MTD engines.
• Use clean, fresh fuel with a pump octane rating of 87 or greater.
• Stale or out-of-date fuel is the leading cause of hard starting issues.
• Pump octane ratings beyond 87 will not improve engine performance.
NOTE: The engines on the 221 series of snow throwers are not equipped with fuel filters. There is a brass
screen under the fuel inlet nipple of the carburetor, but it is not serviceable.
Figure 2.2
! WARNING! WARNING
Gasoline is extremely flammable and the vapors are explosive. Avoid all sources of heat when
working on the fuel system.
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