Cylinders; Piston Assembly - Arctic Cat 1987 AFS El Tigre Service Manual

3. Place t he cy linder head(s) on a surf ace plate
covered with #400 grit wet-or-dry sandpaper.
Using li ght press ure, move the' cyl inder head
in a figure eight mot ion . Inspect the sea ling
surface fo r any ind ication of hi gh sports. A
hig h spot ca n be noted by a bri ght met allic
finish . Correct any high spots before
assembly by cont inuing to move the cylinder
head in a figure eight motion until a uniform
bright metall ic finish is attained .
Fig. 2-55
•
CAU TION
•
Water or cleaning solvent must be used in con-
junction with the wet-or-dry sandpaper or
damage to the sealing surface may result.
CYLIND ERS
.'\572
1.
Using a non-meta llic carbon removal tool ,
remove carbon buildup from the exhaust
ports.
2. Wash the cylinders in cleaning solvent.
3.
Inspec t t he cylinders for pitting, scoring,
scuff ing , and co rrosion. If marks are found,
repair t he surface with a surface hon e with
#500 grit s ton ~s and honi ng oil.
Fig. 2·56
II NOTE: To produce the proper 60 0 "cross·
hatch" pattern, use a low rpm dri ll (600 rpm)
at the rate of 30 strokes per minute. If honing oil is
not ava ilable, use a lig htweight petroleum·based
oil. Thoroughly clean cylinders after honing using
soap and hot water and dry w ith 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.
II NOTE: On all models except the 530 L1C, it is
necessary to remove the stud bolts to per·
form step 4.
4. Place the head surface of each cylinder on a
su rface pla te covered w it h #400 grit wet-or-dry
sand paper. Usi ng lig ht press ure, move eac h
cy lin der in a figure eight moti on. Ins pect the
surface for any indication of high spots. A
hi gh spot can be noted by a bright metall ic
f inish . Co rrec t any high s pots befo re
assemb ly by continuing to move th e cyli nde r
in a f igure eight motion unt il a uniform bright
metall ic finish is att ained .
•
CAUTION
•
Water or cleaning solvent must be used in con-
jection with the wet-or-dry sandpaper or damage
to the sealing surface may result.
PISTON ASSEMBLY
1. USing a non-metallic carbon removal too l,
remove carbon buildup from the dome of each
piston .
2. USing an old piston ring as a tool, snap the
ring in two pieces. Grind one end of the ring at
a 45 degree angle and to
a
sharp edge. Clean
the ring-groove of carbon using th e ring. Be
sure to position the ring w ith its tapered side
up.
•
CAUTION
•
Improper cleaning of the ring grooves by the use
of the wrong type of ring-groove cleaner will
result in severe damage to the piston .
3. Inspect each piston for cracks in the piston
pin and skirt areas .
4. Inspect each piston for seizure marks or scuf-
fing. Repair with #400 grit wet-or-dry sand-
paper and water or hon ing oil.
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