Service Manual

7-12 CAMSHAFT/CRANKSHAFT
Crankshaft, Connecting Rod
Connecting Rod Removal
•
Remove:
Piston (see Engine Top End chapter)
Connecting Rod Installation
•
Install:
Piston (see Engine Top End chapter)
Crankshaft Removal
•
Drain the oil (see Lubrication System chapter).
•
Remove:
Air Cleaner (see Fuel System chapter)
Recoil Starter (see Electrical System chapter)
Fuel Tank (see Fuel System chapter)
Flywheel (see Electrical System chapter)
Crankcase Cover (see Camshaft/Crankshaft chapter)
Camshaft (see Camshaft/Crankshaft chapter)
Connecting Rod (see Camshaft/Crankshaft chapter)
•
Pull the crankshaft [A] out of the crankcase. Tap gently
with a wooden or plastic mallet if necessary to loosen the
crankshaft.
Crankshaft Installation
•
Clean up the crankshaft and crankcase thoroughly.
•
Check that the pivot arm f or the governor is installed (see
Fuel System chapter).
•
Pack some amount of high temperature grease into the
oil seal on the crankcase.
•
Apply engine oil journal.
•
Install the crankshaft in the crankcase.
Cleaning/Inspection
•
After removing, clean the connecting rod and crankshaft
with a high flash-point solvent and dry them with com-
pressed air.
•
Inspect the teeth of the crankshaft gear for pitting, fatigue
cracks, burrs and evidence of improper tooth contact.
Replace the gear if necessary.
•
Inspect the crankshaft and connecting rod for wear,
scratches, evidence of improper contact or other dam-
ages.
Replace them if necessary.