139
GZ144
16. Using an awl, remove one piston-pin circlip.
GZ145
17. Using the Piston Pin Puller, remove the piston pin.
Account for the opposite-side circlip. Remove the
piston.
NOTE: It is advisable to remove the opposite-side
circlip prior to using the puller.
NOTE: Support the connecting rod with rubber
bands or a piece of hose to avoid damaging the rod
or install a suitable connecting rod holder.
GZ146A
Servicing Top-Side
Components
VALVE ASSEMBLY
When servicing valve assembly, inspect valve seats, valve
stems, valve faces, and valve stem ends for pits, burn
marks, or other signs of abnormal wear.
NOTE: Whenever a valve is out of tolerance, it must
be replaced.
Cleaning/Inspecting Valve Cover
NOTE: If the valve cover cannot be trued, the cylin-
der head assembly must be replaced.
1. Wash the valve cover in parts-cleaning solvent.
2. Place the valve cover on the Surface Plate covered with
#400 grit wet-or-dry sandpaper. Using light pressure,
move the valve cover in a figure eight motion. Inspect
the sealing surface for any indication of high spots. A
high spot can be noted by a bright metallic finish. Cor-
rect any high spots before assembly by continuing to
move the valve cover in a figure eight motion until a uni-
form bright metallic finish is attained.
CC130D
AT THIS POINT
To service cylinder, see Servicing Top-Side Compo-
nents sub-section.
CAUTION
When removing the cylinder, be sure to support the pis-
ton to prevent damage to the crankcase and piston.
CAUTION
Do not allow the connecting rod to go down inside the
crankcase. If the rod is down inside the crankcase and
the crankshaft is rotated, severe damage will result.
AT THIS POINT
To service piston, see Servicing Top-Side Components
sub-section.
AT THIS POINT
To service center crankcase components only, proceed
to Removing Left-Side Components.
CAUTION
Do not remove an excessive amount of the sealing sur-
face or damage to the camshaft will result. Always check
camshaft clearance when resurfacing the valve cover.
