User Guide

6. CYLINDER HEAD/VALVES
6-6
GRA ND DINK 125/150
CAMSHAFT HOLDER INSPECTION
Inspect the camshaft holder, valve rocker
arms and rocker arm shafts for wear or
damage.
Measure the I.D. of each valve rocker arm.
Service Limits: IN: 10.10mm replace if over
EX: 10.10mm replace if over
Measure each rocker arm shaft O.D.
Service Limits: IN: 9.90mm replace if below
EX: 9.90mm replace if below
CYLINDER HEAD REMOVAL
First drain the coolant from the radiator and
water jacket, then remove the thermostat
water hose.
Remove the camshaft. (
!
6-4)
Remove the carburetor and intake manifold.
Remove the bolt attaching the thermostat
housing and the thermostat housing.
Remove the cylinder head.
Remove the dowel pins and cylinder head
gasket.
Remove the cam chain guide.
Remove all gasket material from the cylinder
head mating surface.
Bolt
Intake Manifold
Cam Chain Tensioner Slipper
Camshaft Holder
If the valve rocker arm contact surface is
worn, check each cam lobe for wear or
damage.
＊
Be careful not to drop any gasket
material into the engine.
＊
Rocker Arm Shafts
Cylinder
Cylinder Head Gasket