Tomberlin CrossFire 150, Service Manual

Page: 27 / 76

ENGINE COMPONENTS INSPECTION AND SERVICING
INSPECTION AND SERVICING: ENGINE COMPONENTS AND CRANK CONNECTING ROD
MECHANISM
CYLINDER
CYLINDER REMOVAL:
• Remove cylinder head (See Cylinder Head Removal under Valve Mechanism Inspection).
• Remove cylinder
• Clean gasket surface
CYLINDER BORE INSPECTION:
• Remove all gasket material from the cylinder sealing surfaces.
• Inspect the top of the cylinder for evidence of warping using a straight edge and feeler gauge.
Service Limit 0.04 mm 0.002 in.
• Inspect cylinder for wear, scratches, or damage.
• Inspect cylinder for taper and out of round. Measure in two different directions, front-to-back and side-to-
side, on three different levels:
1. 1/2” down from top
2. in the middle
3. 1/2” up from bottom
• Record measurements. If cylinder is tapered or out of round beyond 0.04 mm or 0.002 in., the cylinder must
be replaced.
CYLINDER BORE
Service Limit 52.05 mm 2.049 in.
Cylinder Taper
0.05 mm 0.002 in.
Cylinder Out of Round 0.05 mm 0.002 in.
23