Yamaha BR250F - Top End

B. Top End
Cylinder
Small End Bearing
1. Install the piston rings as shown in the
illustration.
Piston crown
/ //// / / / /// //(JUJ/J//J////
__ ':1 '-----..;;:0..,,-
'l//7//7//// /77//7//7//7//7
2-13
rCYlinder Bolt
)
Top
Piston ring
2nd