4 - 35
ENG
CYLINDER AND PISTON
EBS00247
REMOVING THE PISTON
1. Remove:
• piston pin clips
1
• piston pin
2
• piston
3
NOTE:
_
Before removing each 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, as shown in the illustration.
Piston pin puller
P/N. YU-01304, 90890-01304
EBS00248
CHECKING THE CYLINDER AND PISTON
1. Check:
• piston wall
• cylinder wall
Vertical scratches
→
Replace the cylinder,
and the piston and piston rings as a set.
Summary of Contents for 2003 YFZ450S
Page 1: ...YFZ450S5TG2 AE1 SERVICE MANUAL ...
Page 2: ......
Page 8: ......
Page 9: ...GEN INFO 1 ...
Page 11: ...GEN INFO ...
Page 20: ......
Page 21: ...SPEC 2 ...
Page 23: ...SPEC ...
Page 34: ...2 11 SPEC ENGINE SPECIFICATIONS Cylinder head tightening sequence ...
Page 69: ......
Page 70: ...CHK ADJ 3 ...
Page 139: ...ENG 4 ...
Page 143: ...ENG ...
Page 224: ...COOL 5 ...
Page 226: ...COOL ...
Page 234: ......
Page 235: ...CARB 6 ...
Page 237: ...CARB ...
Page 248: ...CHAS 7 ...
Page 320: ......
Page 321: ...ELEC 8 ...
Page 323: ... ELEC ...
Page 338: ...8 15 ELEC IGNITION SYSTEM 4 Install throttle lever cover ...
Page 366: ...TRBL SHTG 9 ...
Page 368: ...TRBL SHTG ...
Page 374: ...YAMAHA MOTOR CO LTD 2500 SHINGAI IWATA SHIZUOKA JAPAN ...