18
0.65 mm
(0.026 in.)
SPARK PLUG
Level 2.
Tools Required: Spark Plug socket wrench and screw driver, feeler
gauge, soft wire brush.
Parts Required: Spark Plug, NGK BPMR-8Y P/N A425000000
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.
3. Adjust spark plug gap by bending outer electrode.
4. Tighten spark plug to 145-155 kg/cm (125-135 in. lb.).
COOLING SYSTEMS CLEANING
Level 2.
Tools required: Cross head screwdriver, 3 mm Hexagon wrench,
pointed wood wtick, 25-50 mm (1-2 in.) cleaning 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.
1. Remove spark plug lead from spark plug.
2. Remove muffler cover bolt (A)
3. Remove four screws that retain the engine cover. Two at the top of
the Recoil Starter, two on either side of the front. Lift the cover from
the engine.
NOTE
The spark plug lead and grommet remain in the engine cover.
A
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