Removing The Crankshaft Assembly; Checking The Cylinder And Piston - Yamaha YZF-R1S Service Manual

CONNECTING RODS AND PISTONS
EAS00387

REMOVING THE CRANKSHAFT ASSEMBLY

1. Remove:
NOTE:
Identify the position of each crankshaft journal
upper bearing so that it can be reinstalled in its
original place.
EAS00261

CHECKING THE CYLINDER AND PISTON

1. Check:
2. Measure:
a. Measure cylinder bore "C" with the cylinder
NOTE:
Measure cylinder bore "C" by taking side-to-
side and front-to-back measurements of the cyl-
inder. Then, find the average of the measure-
ments.
5-79
S crankshaft assembly
S crankshaft journal upper bearings
(from the upper crankcase)
Refer to "CRANKSHAFT".
S piston wall
S cylinder wall
Vertical scratches ! Replace the cylinder,
and the piston and piston rings as a set.
S piston-to-cylinder clearance
bore gauge.
ENG