PB-251
41
ENGINE
7-2 Cleaning cooling air passages (continued)
3. Remove spark plug cap and clean dirt around
spark plug. Remove spark plug.
4. Install piston stopper 897537-30130 (D) in the
spark plug hole by hand to stop crankshaft rotation.
5. Remove pawl carrier (B) counterclockwise with
6mm L hexagonal wrench 895615-10860.
6. Remove cylinder cover (C).
7. Inspect cylinder cooling fins for blockage with dirt
or dust.
8. Clean air passage, with wooden stick or com-
pressed air as required.
WARNING DANGER
Wear eye protection when working with com-
pressed air. Eye damage can occur from
flying particles.
9. Inspect crankcase air intakes (E). If blocked with
leaves or other debris, clean as required.
7-3 Checking muffler and exhaust port
1. Remove muffler.
2. Inspect cylinder exhaust port and clean the port
using wooden or plastic stick if carbon are
found.
NOTE: When cleaning the port, always position pis-
ton at Top Dead Center (TDC) to prevent carbon
from entering cylinder. Do not use metal tool and be
careful not to scratch piston or cylinder.
(E)
(C)
(D)
(B)
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