22
SAE Viscosity Grades
AMBIENT TEMPERATURE
The SAE oil viscosity and service classification are in the API label on the oil
container. We recommend that you use API SERVICE category SJ oil.
The recommended operating range of this pump is 23 °F to 104 °F (
-
5 °C to 40
°C).
AIR FILTER CLEANING
A dirty air filter will restrict air flow to the carburetor, reducing engine performance.
If you operate the pump in very dusty areas, clean the air filter more frequently
than specified in the MAINTENANCE SCHEDULE (see page
19
).
1. Clean the air filter in warm soapy water, rinse, and dry it thoroughly. Or clean
in nonflammable solvent and dry it thoroughly.
2. Dip the air filter in clean engine oil, and then squeeze out all excess oil. The
engine will smoke when started if too much oil is left in the foam.
3. Wipe dirt from the air cleaner base and cover, using a moist rag. Be careful to
prevent dirt from entering the air duct that leads to the carburetor.
SPARK PLUG SERVICE
Recommended spark plug: F7RTC or other equivalents.
Incorrect spark plugs can cause engine damage.
1. Disconnect the spark plug cap, and remove any dirt from around the spark
plug area.
2. Remove the spark plug with a spark plug wrench.