26

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SPARK PLUG

 

 

 

 

 

 

Level2.

 

 

 

 

 

 

Tools Required: T-Wrench. Feeler gauge. Preferably a wire gauge.

 

 

 

 

 

 

Brush.

 

 

 

 

 

 

Parts Required: SparkPlug,(SHC-1700/2100)NGKBPM-7A

 

 

 

 

 

 

 

P/N15901010630

 

 

 

 

 

 

 

(SHC-2400,HCA-2400)NGKBPM-7Y

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P/N99944500071

 

 

 

 

 

1.

Remove spark plug and check for fouling, worn and rounded center

 

 

 

 

 

 

 

electrode.

 

 

 

 

 

2.

Clean the plug or replace with a new one. DO NOT sand blast to

 

 

 

 

 

 

 

clean. Remaining sand will damage engine.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0.65 mm

 

 

 

3.

Adjust spark plug gap by bending outer electrode.

 

(0.026 in.)

 

 

 

4.

Tighten spark plug to 145-155 kg/cm (125-135 in. lb.).

 

 

 

 

 

COOLING SYSTEM CLEANINGLevel3.

Tools required: Cross Head Screwdriver, 3 mm Hex wrench, 4 mm Hex wrench, Pointed Wood Stick, Cleaning Brush, 1"-2" medium bristle paint brush.

Parts Required: None.

IMPORTANT

To maintain proper engine operating temperatures, cooling air must pass freely through the cylinder fin area. This flow of air carries combustion heat away from the engine.

Overheating and engine seizure can occur when:

•Air intakes are blocked, preventing cooling air from reaching the cylinder.

•Dust and grass build up on the outside of the cylinder. This build up insulates the engine and prevents the heat from leaving.

Removal of cooling passage blockages or cleaning of cooling fins is considered “Normal Maintenance”. Any failure attributed to lack of maintenance is not warranted.

A