4 - 34
ENG
CYLINDER AND PISTON
REMOVING THE PISTON
1. Remove:
• piston pin clips
1
• piston pin
2
• piston
3
NOTE:
Before removing piston pin, deburr the clip
groove and pin hole area. If the piston pin
groove is deburred and the piston pin is still
difficult to remove, use the piston pin puller
4
.
CAUTION:
Do not use a hammer to drive the piston
pin out.
2. Remove:
• piston rings
NOTE:
Spread the end gaps apart while at the same
time lifting the piston ring over the top of the
piston crown.
Piston pin puller
P/N. YU-01304, 90890-01304
CHECKING THE CYLINDER AND PISTON
1. Check:
• cylinder and piston walls
Vertical scratches
→
Rebore or replace the
cylinder and the piston.
2. Measure:
• piston-to-cylinder clearance
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1st step:
a. Measure the cylinder bore “C” with a cylin-
der bore gauge
1
.
a
50 mm (2.0 in) from the top of the cylinder
NOTE:
Measure cylinder bore “C” in parallel to and at
right angles to the cylinder matching surface.
Then, find the average of the measurements.
Summary of Contents for 2004 Rhino 660 YXR660FAS
Page 1: ...LIT 11616 17 23 5UG F8197 10 YXR660FAS SERVICE MANUAL ...
Page 6: ......
Page 40: ...2 11 SPEC ENGINE SPECIFICATIONS Cylinder head tightening sequence ...
Page 55: ...2 26 SPEC COOLANT FLOW DIAGRAMS 1 Coolant outlet hose 2 Radiator inlet pipe 2 1 ...
Page 383: ...9 31 ELEC LIGHTING SYSTEM ...
Page 418: ......
Page 419: ......
Page 420: ...YAMAHA MOTOR CO LTD 2500 SHINGAI IWATA SHIZUOKA JAPAN PRINTED IN U S A ...