Yamaha TTR250L Service Manual page 112

ENGINE DISASSEMBLY
10.Remove:
Dowel pins 1
Gasket 2 (cylinder head)
Timing chain guide 3 (exhaust)
Cylinder 4
11.Remove:
Dowel pins 1
Gasket 2 (cylinder)
12.Remove:
Piston pin circlip 1
Piston pin 2
Piston 3
NOTE:
Before removing the piston pin circlip,
cover the crankcase with a clean rag to
prevent the circlip from falling into the
crankcase cavity.
Before removing the piston pin, deburr
the clip groove and pin hole area. If the
piston pin groove is deburred and piston
pin is still difficult to remove, use the pis-
ton pin puller.
Piston pin puller:
P/N. YU-01304
CAUTION:
Do not use a hammer to drive the piston
pin out.
4 - 7
ENG