Yamaha DT125RE 2005 Service Manual page 183

2
3
3
INSPECTION AND REPAIR
Piston ring oversize
• Top and 2nd piston rings
The size of the top and 2nd oversize piston
rings is stamped on the top of each ring.
PISTON PIN AND BEARING
1. Lubricate:
• Small end bearing
• Piston pin
(Lightly)
1
2. Install:
• Small end bearing
• Piston pin
(into small end
3. Check:
• Free play
There should be no noticeable play. Free
play exists
for wear/Replace the pin and/or connec-
ting rod as required.
4. Install:
• Piston pin
(into piston pin hole)
5. Check:
• Free play (when the piston pin is in place
in the piston).
There should be no noticeable play. Free
play exists
for wear/Replace the pin and/or connec-
ting rod as required.
6. Inspect:
• Piston pin and bearing
Signs of heat discoloration
EAS00280
CHECKING THE FRICTION PLATES
The following procedure applies to all of the
friction plates.
1. Check:
• friction plate
Damage/wear
plates as a set.
5-21
ENG
Oversize
25 mm
Oversize
50 mm
of connecting rod)
Inspect the connecting rod
Inspect the connecting rod
Replace the friction
Replace