Cleaning the Exhaust Port and Muffler

maintenance

Measure plug gap. The correct gap is 0.028−0.031 in.

(0.7-0.8 mm). To widen gap, if necessary, carefully bend the ground (top) electrode. To lessen gap, gently tap ground electrode on a hard surface.

Seat spark plug in position; thread in by hand to prevent cross-threading.

Tighten with wrench to compress washer. If spark plug is new, use 1/2 turn to compress washer appropriate amount. If reusing old spark plug, use 1/8 to 1/4 turn for proper washer compression.

NOTE: An improperly tightened spark plug will become very hot and could damage the engine.

Depending on the type of fuel used, the type and amount of lubricant used, and/or your operating conditions, the exhaust port and muffler may become blocked with carbon deposits. If you notice a power loss with your gas-powered products, you may need to remove these deposits to restore perfor- mance. We highly recommend that only qualified service technicians perform this service.

spark arrestor

See Figures 11.

The spark arrestor must be cleaned or replaced every 50 hours or yearly to ensure proper performance of your product. Spark arrestors may be in different locations depending on the model purchased. Please contact your nearest service dealer for the location of the spark arrestor for your model.

To clean the spark arrestor:

Remove the screw that secures the muffler outlet cover and spark arrestor.

Pull the spark arrestor out of the muffler outlet.

Clean the spark arrestor with a wire brush.

Reinstall the muffler outlet cover and spark arrestor, and tighten the screw.

draining fuel tank/carburetor

See Figures 12 - 13.

To help prevent gum deposits in the fuel system, drain the fuel from the tank and carburetor before storing.

DRAINING THE FUEL TANK

Turn the engine switch off ( O ).

Turn the fuel valve to the OFF position.

Remove the fuel line from the petcock by squeezing the ends of the retaining clip and sliding the fuel line off.

Install one end of a drain line over the petcock, and place the other end in a fuel container large enough to catch the fuel being drained from the tank.

Turn the fuel valve to the ON position.

When the fuel has drained from the tank, close the fuel valve and reinstall fuel line on petcock.

draining the carburetor

Turn the engine switch off ( O ).

Turn the fuel valve to the OFF position.

Position a suitable container under the carburetor drain screw to catch fuel; loosen the screw.

Allow fuel to drain completely into container.

Retighten drain screw.

NOTE: Consult hazardous waste management guidelines in your area for the proper way to dispose of used fuel.

Transporting

Turn engine switch OFF ( O ).

Turn the fuel valve to the OFF position.

Make sure engine and exhaust of unit is cool.

Empty the fuel tank.

Do not drop or strike unit or place under heavy objects.

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