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~eMlal
SERf/ICE AND REPAIR
I~
•
Turn
the a?justing
screws (3)
clockwise
to
tighten and
_
counterclockwise to loosen
untilprope~
_
track tension is achieved.
IMPORTANT:
Adjust
both screws (3)
equally so
as not to disturb the
track
alignment.
•
Retighten the locknuts
(1)
on both
sides
of the
snowmobile. Take the
sled
on a
short
run and then
recheck traction belt tension.
Spark Plug
Interchangeability
The following tabulation is provided to
show
correct
spark-plug interchangeability.
Bosch Champion
AC Autolite Lodge
NGK
M175Tl
UK-I0
M84
BZ3
HTN18 AB-6
M225Tl
K-9
M83
-
-
A-7
M240Tl
UK-7
-
-
-
-
Wiring
Diagrams
Electrical
wiring diagrams are provided for the
trained
technicians using this manual. Each dia-
gram is identified with the model number of the
snowmobile to which it applies.
Troubleshooting
ENGINE HARD TO START. Fuel line blocked or
leaking;
ruptured fuel-pump diaphragm; ignition
or switch wiring loose or grounded;
spark
plug(s)
fouled or faulty; contact breaker pOints pitted
or
burned.
ENGINE STOPS. Fuel
tank
empty;
fuel flow ob-
structed; ignition system faulty.
Spark plug(s)
fouled or dirty. Engine too hotandpistons
seizing;
carburetor
setting
too
lean
or incorrect grade of
oil being used.
ENGINE STOPS, FUEL TANK HALF
EMPTY.
Carburetor-to-tank fuel line connected incorrectly.
Be certain the gas tank-to-carburetor line is con-
nected
to
the inlet fitting on the carburetor.
ENGINE
OPERATES
IRREGULARLY. Spark plug
loose,
fouled or faulty; ignition
switch
wiring
J6
grounded; carburetor trouble.
Engine holddown
bolts~
oose; carburetor dirty. Ignition timi,ng. off.
ENGINE WORKING FOUR-STROKE. Choke shut;
carburetor settings incorrect; dirt preventing car-
buretor inlet needles from
seating
properly
.
ENGINE LOSES POWER. Poor compression due to
loose head and crankcase bolts.
Faulty ignition;
timing; piston rings
sticking
due to the use of
improper oil. Carbon deposits
in
cylinder.
ENGINE BACKFIRES THROUGH CARBURETORS.
Carburetor fuel-supply channel clogged.
ENGINE BACKFIRES THROUGH EXHAUST. In-
correct or faulty
spark
plug(s); faulty ignition coil
or condenser;
loose
ignition wiring.
ENGINE OVERHEATS. Insufficient or incorrect
grade oil in fuel mixture; carburetor or fuel line
partly clogged; carburetor setting too lean; ignition
timing too
slow.
EXCESSIVE FUEL CONSUMPTION. Carburetor
fuel line or
gas
tank leaking; choke closed; incorrect
carburetor setting.
THROTTLE CONTROL. Excessive play in throttle
control lever caused by loose throttle control cable.
STEERING.
Poor
steering
ability caused by im-
properly adjusted skis; steering linkage loose or
out of adjustment.
U -strap bolts on roll bar too
tight or too loose.
Ski spring mounting bracket
loose.
BRAKES. Excessive
play
in
handbrake
due to loose
brake
cable
or worn pads.
TRACTION BELT. Poor traction; check traction
belt for proper alignment and tension.
CLUTCH. Automatic
clutch
fails
to
engage
at 3200
to 3700 RPM; check drive belt for proper tension.
ELECTRICAL SYSTEM. For problems involving
the electrical system, check for defective wires,
poor ground and loose connections.
)
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