Engine Servicing (Inspecting); Inspect End Covers; Inspect Rotor Housing; Inspect Fan And Starter Drum - Arctic Cat Panther 1974 Manual

ENGINE SERVICING (INSPECTING)
Inspect End Covers
Equipment Necessary: Surface Plate
II
Note: End covers cannot be remachined; total
replacement of the affected end cover is to be
made if damage is incurred.
1.
I nspect the end covers for scratches, scoring,
cracks (other than hairline), breakage and any
other noticeable imperfection that may affect
operation. If any of these conditions exist,
replacement is necessary.
2.
I nspect end cover bearings for rough rotation
and the absence of a bearing element. If these
conditions exist, replace the bearing.
3.
I nspect port areas for damage.
4.
Carefully place the end covers on a clean
surface plate. There is not to be any
distortion between the rotor sliding surface of
the end cover and the surface plate. If
distortion is evident, replace the end covers.
e
CAUTION
e
Be extremely careful when the end cover is
placed on the surface plate to check distortion.
If the end cover is scraped across the surface
plate, the possibility of end cover sliding
surface damage does exist. If accidentally
da maged, end cover must be replaced.
Remachining cannot be performed on the end
covers.
Inspect Rotor Housing
Equipment Necessary: No Special Tools Required
II Note: The sliding surface of the rotor housing
is not to be remachined; total replacement of
the rotor housing must be made if damage is
incurred.
If a new rotor housing is to be installed, new apex
seals must be used in conjunction with the new
rotor housing. DO NOT USE APEX SEALS THAT
WERE REMOVED, EVEN IF THE SEAL IS NOT
WORN. Whenever a rotor housing is replaced, the
hole for the spark plug should be checked for
length so that a spark plug with the appropriate
reach is used.
11·20
1. I nspect the rotor housing sliding surface for
deep scratches, scoring, cracks (other than
h airline), breakage and any noticeable
imperfection that may affect engine
operation. If any of these conditions exist,
replace the rotor housing.
2.
Inspect the exhaust port and spark plug hole
for damage and raised surfaces. Replace the
rotor housing if these conditions exist.
3.
Check both sides of the rotor housing sealing
surface by placing the rotor housing on a
surface plate. There is not to be any
distortion between the rotor housing and the
surface plate. No coarse or raised edges are to
be evident on the sealing surfaces. If any of
these conditions exist, replace the rotor
housing.
Inspect Fan and Starter Drum
Equipment Necessary: Metal File (If Necessary)
1.
I nspect the fan for cracks, nicks, or broken
blades. If fan blades are cracked or broken,
replace the fan.
II Note: If the fan blade is nicked, use a metal
file and carefully smooth out the affected
area.
2. I nspect the keyway on the inside diameter of
the fan for damage. If damage is evident,
replace the fan.
3. I nspect the starter dru m for damage, cracks,
nicks, and imperfections in the casting.
Smooth out nicked areas with a metal file. If
damaged or cracked, the starter drum is to be
replaced.
Check Magnet Strength (F Iywheel)
Equipment Necessary: Screwdriver
1. Set the fan with flywheel on a wooden
surface so that the magnets face upward.
2. Hold a screwdriver on the extreme end of the
handle with the blade end pointing down
toward the center of the flywheel.