Cylinders; Piston Assembly - Arctic Cat EL TIGRE 1980 Service Manual

2. Inspect the spark-plug holes for any
damaged threads. Repair damaged threads
using a ''heli-coil'' insert.
3. On the 6000, place the cylinder head on a
surface plate covered with #400 grit wet-or-
dry sandpaper. Using light pressure, move
the cylinder head in a figure eight motion.
Inspect the sealing surface for any indica-
tion of high spots. A high spot can be noted
by a bright metallic finish. Correct any high
spots before assembly by continuing to
move the cylinder head in a figure eight mo-
tion until a uniform bright metallic finish is
attained.
Fig. 2·45
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CAUTION
Water or cleaning solvent must be used in conjunc-
tion with the wet-or-dry sandpaper or damage to the
sealing surface may result.
CYLINDERS
A572
1. Using a non-metalli c carbon removal tool,
remove carbon buildup from the exhaust
ports.
2. Wash the cylinders in cleaning solvent.
3. Inspect the cylinders for pitting, scoring,
scuffing, and corrosion. If marks are found,
repair the surface with a surface hone with
#500 grit stones and honing oil.
Fig. 2-46
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A536
NOTE: To produce the proper 60
°
''crosshatch'' pattern, use a low rpm drill
(600 rpm) at the rate of 30 strokes per minute. If
honing oil is not available, use a lightweight
petroleum-based oil. Thoroughly clean
cylinders after honing using soap and hot water
and dry with compressed air; then immediately
apply oil to the cylinder bores.
If
a bore is
severely damaged or gouged, the cylinder will
have to be replaced.
NOTE: It is necessary to remove the stud
bolts to perform step 4.
4. Place the head surface of each cylinder on
a surface plate covered with #400 grit wet-
or-dry sandpaper. Using light pressure,
move each cylinder in a figure eight mo-
tion. Inspect the surface for any indication
of high spots. A high spot can be noted by a
bright metallic finish. Correct any high
spots before assembly by continuing to
move the cylinder in a figure eight motion
until a uniform bright metallic finish is at-
tained.
CAUTION
Water or cleaning solvent must be used in conjunc-
tion with the wet-or-dry sandpaper or damage to the
sealing surface may result.
PISTON ASSEMBLY
1. Using a non-metallic carbon removal tool,
remove carbon buildup from the dome of
each piston.
2. Inspect each piston for cracks in the piston
pin and skirt areas.
3. Inspect each piston for seizure marks or
scuffing. Repair with #400 grit wet-or-dry
sandpaper and water or honing oil.
Fig. 2-47
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19