Suzuki GP125 - Page 45

3-13
CYLINDER HEAD
Remove the carbon and clean the cylinder head.
Check the scratch on the mating surface.
A Y
Using a surface plate and red lead paste, check
the gasketed surface of the cylinder head for
flatness. If high and low spots are noted, remove
them by rubbing the surface against emery paper
(of about #400) laid flat on the surface plate in
a lapping manner. The gasketed surface must be
smooth and perfectly flat in order to secure a
tight joint. a leaky joint can be the cause of
reduced power output and increased fuel
consumption.
Cylinder head wapag
A
Service limit 0.05 mm (0.002 in)
CYLINDER
Decarbon the exhaust port and the upper part of
the cylinder, taking care not to damage the
cylinder wall surface.
The wear of the cylinder wall is determined
from diameter reading taken at 15 mm (0.59 in)
from the top of the cylinder with a cylinder
gauge. If the wear thus determined exceeds the
limit indicated below, rework the bore to the
next oversize by using a boring machine or ге.
place the cylinder with a new one. Oversize
pistons are available in two sizes: 0.5 mm
(0.0196 in) and 1.0 mm (0.0394 in) oversizes.
E
9