Cylinder And Piston Removal; Cylinder And Piston Inspection - Eton beamer R2-50 Service Manual

6.2 CYLINDER AND PISTON
REMOVAL
Remove the engine. (See chapter 3)
Disassemble the air cleaner and carburetor.
Remove the intake pipe mounting bolts.
Remove the cylinder bolt nuts.
Remove the cylinder head.
Remove the cylinder carefully, so the whole
piston is visible.
Remove one piston pin clip.
Remove the piston and piston pin.
Spread each piston ring and remove it.
Note: Don't let the clip drop into the engine
crankcase.

6.3 CYLINDER AND PISTON INSPECTION

Inspect the cylinder bore for wear or damage.
Measure the cylinder inner diameter at three levels in the X- and
Y-axis.
Taper limit: 0.10 mm
Out of round limit: 0.10 mm
Check the cylinder head surface for signs of warping with a
straight edge and feeler gauge.
Service limit: 0.10 mm
Beamer R2 Rev 1.0 Page 25 of 56 6/13/2007