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7. CYLINDER/PISTON K-PIPE 125
CYLINDER REMOVAL Guide Roller
Remove the cylinder head.
Remove the cam chain guide roller.
Remove the cylinder by removing the cylinder bolt.
Remove all gasket material from the cylinder surface.
Remove the gasket and dowel pins. Guide Roller Bolt
Dowel Pins Gasket
CYLINDER INSPECTION
Inspect the cylinder bore for wear or damage.
Measure the cylinder I.D. at three levels of top, middle and
bottom at 90° to the piston pin (in both X and Y directions).
Service Limit: 52.4mm repair or replace if over
Measure the cylinder-to-piston clearance.
Service Limit: 0.35mm repair or replace if over
The true roundness is the difference between the values
measured in X and Y directions.
The cylindricity (difference between the values measured at
the three levels) is subject to the maximum value calculated.
Top
Service Limits:
True Roundness: 0.05mm repair or replace if over
Cylindricity: 0.05mm repair or replace if over Middle
Bottom
7-4