POWER PRUNER
TM
OPERATOR'S MANUAL
23
COOLING SYSTEM
Level 2.
Parts Required: None.
IMPORTANT
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combustion heat away from the engine.
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cylinder.
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insulates the engine and prevents the heat from leaving.
Removal of cooling passage blockages is considered “Normal Mainte-
nance.” Any failure attributed to lack of maintenance is not warranted.
SPARK PLUG
Level 2.
Parts Required: Spark Plug NGK BPMR-8Y
IMPORTANT
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damage may occur.
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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 0.65mm (0.026 in.) by bending outer elec-
trode.
4. Tighten spark plug to 150-170 kg/cm (130-150 in. lb.).
0.65 mm
(0.026 in.)