Maintenance (continued)

NOTE:

Using non-standard replacement parts could invalidate your Shindaiwa warranty.

Muffler

This unit must never be operated with a faulty or missing spark arrester or muffler. Make sure the muffler is well secured and in good condition. A worn or damaged muffler is a fire hazard and may also cause hearing loss.

Spark Plug

Keep the spark plug and wire connections tight and clean.

Fasteners

Make sure nuts, bolts, and screws (except carburetor adjusting screws) are tight.

Air Filter

The H4 engine that powers your Shindaiwa model is a hybrid 4-stroke engine. As a hybrid, the engine is lubricated by oil mixed with the gasoline and air from the carburetor that moves through and around the internal parts of the engine in a similar way that a 2-stroke engine is lubricated. Without the heavy duty 2-stage air filter equipped on all H4 engines, dust and dirt could also move through the engine, decreasing engine life, increasing valve wear and the need for more frequent valve adjustments. To keep your H4 engine strong and reliable, Shindaiwa recommends that you check and service the air filter as instructed in the 10-Hour Maintenance section that follows.

Daily maintenance

Prior to each work day, perform the following:

■■Remove all dirt and debris from the engine, check the cooling fins and air cleaner for clogging, and clean as necessary.

■■Carefully remove any accumulations of dirt or debris from the muffler and fuel tank. Check cooling air intake area at base of crankcase. Remove all debris. Dirt build-up in these areas can lead to engine over- heating, fire, or premature wear.

WARNING!

Always wear gloves when working around the cutter assembly.

■■Lubricate the blades before use and after refueling. Check the cutters for damage or incorrect adjustment.

■■Clean any debris or dirt from the cutting attachment.

Cooling

fins

Cooling

fins

Air

intake

Remove all dirt and debris from the engine and check the cooling fins

 

 

■■Check for loose or missing screws or

■■Make sure nuts, bolts, and screws

components. Make sure the cutter

(except carburetor idle speed adjust-

attachment is securely fastened.

ing screws) are tight.

■■Check the entire unit for leaking fuel

 

or grease.

 

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