Installation - Eton beamer R2-50 Service Manual

Measure the piston pin bore, and the piston pin
outer diameter.
Pin outer diameter Service limit: 10.04 mm
Pin bore Service limit: 9.96 mm
Measure the connecting rod small end inner
diameter with a small hole-gauge.
Service limit: 14.06 mm

6.4 INSTALLATION

Install the piston rings with the marks facing up.
Do not damage the piston rings by spreading the
ends too far.
Note: The piston ring gap must align with the ring
pin in the ring groove of piston.
Clean the cylinder gasket surface, being careful
not to drop any gasket material into the crankcase.
Apply some oil to the inside of the connecting rod
small end.
Install the piston, piston pin, and clip.
Install the piston with the arrow mark facing the
exhaust pipe.
Beamer R2 Rev 1.0 Page 27 of 56 6/13/2007