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SPARK PLUG
Level 2.
Tools Required: Spark Plug socket wrench and screw driver, Feeler
gauge. Preferably a wire gauge.
Parts Required: Spark Plug, NGK - BPMR-7A
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 SYSTEM CLEANING
Level 3.
Tools required: Cross Head Screwdriver, 3mm Hex wrench, Pointed
Wood Stick, 25mm-50mm (1in.-2in.) 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.
1. Remove spark plug lead and throttle cable end from the carburetor
swivel.
2. Remove the four screws that retain the cover. Two at the top of the
recoil starter, two on either side of the front. Lift the cover from the
engine and lay to the front of the tiller/cultivator.
NOTE
The throttle linkage remains assembled to the cover and the spark
plug lead and grommet remain installed.
0.65 mm
(0.026 in.)