Sym HD2 125 Service Manual page 148

Cylinder Removal
Remove cylinder head (refer to chapter 6).
Remove coolant hose from cylinder.
Remove cylinder.
Remove cylinder gasket and dowel pin.
Cover the holes of crankcase and cam chain with
a piece of cloth.
Clean up all residues or foreign materials from
the two matching surfaces of cylinder and
crankcase.
Caution
Soap the residues into solvent so that the
residues can be removed more easily.
Inspection
Check if the inner diameter of cylinder is wear out
or damaged.
In the 3 positions, top, center and bottom, of
cylinder, measure the X and Y values respective
in the cylinder.
Service limit: LC12W: 57.016
LC18W: 61.10 mm
Check cylinder if warp.
Service limit: 0.05 mm
To this chapter contents
8. CYLINDER / PISTON
Coolant hose
Top
Center
Bottom
8-3