Sym JOYMAX 250 User Manual

7. Cylinder / Piston
7-3
Cylinder and Piston Removal
Remove cylinder head (refer to chapter 6).
Remove coolant hose from cylinder.
Remove cylinder.
Cover the holes of crankcase and cam chain with
a piece of cloth.
Remove piston pin clip, and then remove piston
pin and piston.
Remove cylinder gasket and dowel pin.
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: 71.100 mm
Coolant hose
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Sym JOYMAX 250 Specifications

General

Brand	Sym
Model	JOYMAX 250
Category	Scooter
Language	English