Sym FIDDLE 125 Service Manual page 69

SYM
Remove the camshaft holder and rocker arm
set.
Remove the camshaft chain from the
camshaft sprocket.
Remove the camshaft.
Camshaft Inspection
Inspect cam lobe height for damaged.
Service Limit
IN: Replacement when less than 25.29 mm
EX: Replacement when less than 25.12 mm
Inspect the camshaft bearing for looseness
or wear out. If any, replace whole set of
camshaft and bearing.
Disassembly Of Camshaft Holder
With a 5 mm bolt to screw in the cam rocker
arm shaft so that take it out.
Remove cam rocker arm.
Inspection Of Camshaft Holder
Check if the camshaft holder, cam rocker
arm and rock arm shaft for wearing out or
damage.
Caution
Further check is necessary if any wear
is found on the moveable surface of
cam rocker arm.
Check if the camshaft bearing mounting
surface for wear or damage.
Measure the cam rocker arm I.D. of the
camshaft holder.
Service Limit: Replace when it is above
12.10 mm
6. CYLINDER HEAD/VALVE
Camshaft
bearing
bolt
5mm
rocker arm
shaft
rocker arm
shaft
rocker arm
6-5