4
Figure 1. Typical Command Vertical Shaft Engine.
Oil Recommendations
Using the proper type and weight of oil in the
crankcase is extremely important. So is checking oil
daily and changing oil regularly. Failure to use the
correct oil, or using dirty oil, causes premature engine
wear and failure.
Oil Type
Use high quality detergent oil of
API (American
Petroleum Institute) service class SG, SH, SJ or
higher
. Select the viscosity based on the air
temperature at the time of operation as shown in the
following table.
A logo or symbol on oil containers identifies the API
service class and SAE viscosity grade. See Figure 3.
Figure 3. Oil Container Logo.
Refer to Maintenance Instructions beginning on
page 8 for detailed oil check, oil change, and oil
filter change procedures.
Fuel Recommendations
WARNING: Explosive Fuel!
Gasoline is extremely flammable and its vapors can
explode if ignited. Store gasoline only in approved
containers, in well ventilated, unoccupied buildings,
away from sparks or flames. Do not fill the fuel tank
while the engine is hot or running, since spilled fuel
could ignite if it comes in contact with hot parts or
sparks from ignition. Do not start the engine near
spilled fuel. Never use gasoline as a cleaning agent.
Blower Housing
Air Cleaner
Engine
Identification Plate
Oil Filter
Carburetor
Cooling Shrouds
Oil Drain Plug
Optional Oil Sentry Switch
Or Oil Filter Drain Plug
Optional
Oil Filter
Drain Plug
Retractable Starter
Oil Fill/Dipstick
Muffler
Electric Starter
Oil Drain Plug
Cover Or
Optional Fuel Pump
Figure 2. Viscosity Grades Table.
NOTE: Using other than service class SG, SH, SJ or
higher oil or extending oil change intervals
longer than recommended can cause engine
damage.
*Use of synthetic oil having 5W-20 or 5W-30 rating is
acceptable, up to 40°F.
**Synthetic oils will provide better starting in extreme
cold (below -10°F).
*
**
