Drive Chain Tension - BOMBARDIER Alpine 1987 Operator's Manual

Front hood louvers
A017007003
When operating the vehicle in powder
snow it is advisable to block the front
hood louvers as per illustration using
snow deflectors supplied with vehicle.
Unblock the louvers as soon as snow
condition becomes firmer or as soon as
engine becomes too hot.
Air silencer box
'1IF
CAUTION: Never operate your
T
snowmobile with the air silencer
tube disconnected. Serious engine
damage will occur if this notice is
disregarded.
When operating the vehicle in temper-
ature exceeding -10°C (14°F), the rub-
ber plug must block the engine side ori-
fice and the rubber vent must be posi-
tioned on the side of the silencer box
to allow cold air circulation.
A017007004
Rubber
vent
Rubber plug
30 ______________________ _
In temperatures below -10°C (14°F)
and1or powder snow, the rubber plug
must block the entry of fresh air on the
side of the silencer box and the rubber
vent must allow the warm air being
emitted from the engine to be directed
over the carburetor.
'1IF
CAUTION: Observe temperature
T
changes and locate plugs accord-
ingly.
Fan belt
Inspect belt for cracks, uneven wear,
etc. Check fan belt tension, 8 mm
(5/16")
free-play should exist when
deflection is correct.
Belt deflection
8 mm
(5116")
A017002011
If belt seems damaged or if tension is
incorrect, contact your dealer immedi-
ately.
•
WARNING: If fan protector is re-
moved, always reinstall after ser-
vicing.
Drive chain tension
Run vehicle forward so that true free-
play can be taken. Check tension then
turn driven pulley
112
turn towards and
recheck. Starting from maximum reading,
adjust chain tension to obtain from 3
mm to 6 mm
(1/8"
to
1/4")
free-play.