Installing Top-Side Components - Toro 500 EFI Service Manual

2. Rotate the camshaft and note runout; maximum
runout must not exceed specifications.
Measuring Camshaft Lobe Height
1. Using a calipers, measure each cam lobe height.
2. The lobe heights must be greater than minimum
specifications.
Inspecting Camshaft Bearing
Journal
1. Inspect the bearing journal for scoring, seizure
marks, or pitting.
2. If excessive scoring, seizure marks, or pitting is

NOTE: If the journals are worn, replace the cam-
shaft.
Inspecting Camshaft Spring/Drive
Pin
1. Inspect the spring and drive pin for damage.
86
CC283D
2. If damaged, the camshaft must be replaced.
Installing Top-Side
ATV1013A
A. Piston
B. Cylinder
1. Install the piston on the connecting rod making sure
the circlip on each side is fully seated in the piston.

NOTE: The piston should be installed so the arrow
points toward the exhaust.
2. Place the two alignment pins into position. Place the
cylinder gasket into position; then place a piston
holder (or suitable substitute) beneath the piston skirt
and square the piston in respect to the crankcase.
Components
CF061A
CF060A
CC032D