36
FI622A
12. Lift the cylinder off the crankcase taking care not to
allow the piston to drop against the crankcase.
Account for the gasket and two alignment pins.
FI624A
13. Using an awl, remove one piston-pin circlip. Take
care not to drop it into the crankcase.
FI625
14. Using 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.
MD1219
NOTE: Support the connecting rod with rubber
bands to avoid damaging the rod or install a connect-
ing rod holder.
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 Cylinder Head
Cover
NOTE: If the cylinder head cover cannot be trued,
the cylinder head assembly must be replaced.
1. Wash the cylinder head cover in parts-cleaning sol-
vent.
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.
Summary of Contents for 2016 Alterra 500
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