HYOSUNG COMET 125 Service Manual page 59

Valve spring free
length(IN. & EX.)
Venier calipers : 09900-20101
Valve spring
tension
12.0~13.9 kgf
(IN. & EX.)
(26.7~30.6 lbs)
at length 33.7 mm (1.33 in)
CYLINDER DISTORTION
Check the gasketed surface of the cylinder for distor-
tion with a straightedge and thickness gauge, taking a
clearance reading at several places as indicated.
I f t h e l a r g e s t r e a d i n g a t a n y p o s i t i o n o f t h e
straightedge exceeds the limit, replace the cylin-
der.
Cylinder distortion
Thickness gauge : 09900-20806
CYLINDER BORE
Measure the cylinder bore diameter at six place. If any
one of the measurements exceeds the limit, overhaul
the cylinder and replace the piston with an oversize, or
replace the cylinder.
Standard
Cylinder bore 57.000~57.015 mm
(2.2441~2.2447 in)
Standard
Cylinder bore
44.000~44.015 mm
(1.7323~1.7329 in)
Cylinder gauge set : 09900-20508
CAM CHAIN TENSION ADJUSTER
Check that the push rod slides smoothly with the lock
shaft handle clockwise.
If it does not slide smoothly, replace the cam chain ten-
sion adjuster with a new one.
Service limit
37.64 mm
37.80 mm
(1.482 in)
(1.488 in)
Standard
30.0 kgf
(66.1 lbs)
at length 27.95 mm (1.10 in)
Service limit
0.05 mm (0.002 in)
Service limit
57.080 mm
(2.2473 in)
Service limit
44.080 mm
(1.7354 in)
ENGINE 3-22