A dirty air filter decreases engine perform- ance and increases fuel consumption and harmful emissions. Always clean after every 5 hours of operation or yearly, whichever comes first.

1.Clean the cover and the area around it to keep debris from falling into the carburetor chamber when the cover is removed.

2.Press button to open air filter cover. Re- move air filter.

NOTE: Do not clean filter in gasoline or other flammable solvent. Doing so can create a fire hazard or produce harmful evaporative emis- sions.

3.Wash the filter in soap and water.

4.Allow filter to dry.

5.Apply a few drops of oil to the filter; squeeze filter to distribute oil.

6.Replace parts.

REPLACE SPARK PLUG

Replace spark plug each year to ensure the engine starts easier and runs better. Set spark plug gap at 0.6 mm. Ignition timing is fixed, nonadjustable.

1.Twist, then pull off spark plug boot.

2.Remove spark plug from cylinder and dis- card.

3.Replace with Champion RCJ-6Y spark plug and tighten securely with a 19 mm socket wrench.

4.Reinstall the spark plug boot.

CARBURETOR ADJUSTMENTS

There is no screw for idle adjustment on your blower. The throttle lever is used to control en- gine speed. The engine speed can be ad- justed by moving the throttle lever to the left for low speed or right for high speed. If your engine will not run properly or you require fur- ther assistance, contact an authorized ser- vice dealer.

STORAGE

WARNING: Prepare unit for storage at end of season or if it will not be used for 30 days or more.

SAllow engine to cool, and secure the unit be-

fore storing or transporting.

SStore unit and fuel in a well ventilated area where fuel vapors cannot reach sparks or open flames from water heaters, electric mo-

tors or switches, furnaces, etc.

SStore unit with all guards in place. Position unit

so that any sharp object cannot accidentally cause injury.

SStore unit and fuel well out of the reach of chil- dren.

EXTERNAL SURFACES

SIf your unit is to be stored for a period of time, clean it thoroughly before storage. Store in a

clean dry area.

SLightly oil external metal surfaces.

INTERNAL ENGINE

SRemove spark plug and pour 1 teaspoon of 2-cycle engine oil (air cooled) through the spark plug opening. Slowly pull the starter

rope 8 to 10 times to distribute oil.

SReplace spark plug with new one of recom-

mended type and heat range.

SClean air filter.

SCheck entire unit for loose screws, nuts, and bolts. Replace any damaged, broken, or worn parts.

SStart each season using only fresh fuel hav- ing the proper gasoline to oil ratio.

OTHER

S Do not store gasoline from one season to another.

SReplace your gasoline can if it starts to rust.

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McCulloch MAC GB 275 Replace Spark Plug, Carburetor Adjustments, External Surfaces, Internal Engine, Other