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•
CAUTION
•
00 NOT overtighten the pilot air screws when
seating; damage will result.
10. Rotate each pilot air
screw counterclockwise
II
1112
turns from
the
seated
position.
II
NOTE: Synchronize the oil·injection system
before starting the snowmobile.
11. Install
the
air-intake sile ncer
boots.
12.
With
the
snowmobile on
a sh ielded safety
stand,
start
the
snowmob
ile
engi
ne
and
thoroughly
warm up.
"Fine
tun
e"
the throttle
stop screws and
the pilot
air
screws
until the
engine
idles smoothly at
the
desired
rpm
(2000-2500 rpm
is
recommended).
II
NOTE: If the engine does
not
start after
the
carburetors have been adjusted,
repeat
steps 4 and 7 because
the
throttlelignition
monitor switch may not be correctly
tensioned. If
all throttle·cable slack is not taken up,
the
monitor switch
will
prevent
the ignition
system
from firing the spark plugs.
r
&
WARNING
&
DO NOT operate the snowmobile when any com-
ponent in the throttle system is damaged
,
frayed,
kinked
,
worn
,
or improperly adjusted
.
If the
snowmobile is operated when the throttle system
is not functioning properly, personal injury could
result.
Removing Oil·
Injection Pump
1.
Remove
both carburetors.
2.
Disconnect
the oil·supply hose from the
pump
and
plug to prevent oil
drainage.
3.
Remove
th
e
two bolts,
lock
washers,
and
washers
securing
oil-injection pump
and
re-
tainer
to the
crankcase.
Fig. 3·36
4.
Remove
hoses
from
the insulator blocks or
from
the cylinders (depend ing upon model).
5.
Disconnect
the
oil-injection
adjustment
cable.
6.
Remove
the oil·injection pump
and
retainer.
,
Account for
two gaskets and discard
them
.
Installing Oil·
Injection Pump
II
NOTE: When use of a silicone sealer is
in·
dicated, use either RTV Silicone Sealant or
Three Bond Sealant.
1.
Apply sil
icon
e sealer
to both
sid
es
of
the
re-
tainer gasket;
then place gasket
and
retainer
into
posi
tion
on the crankcase.
2.
Apply
si licone sealer
to the oil·injection pump
gasket;
then
place gasket
and
pump into posi-
tion making sure
the oil-injection pump gear
is correctly
al
ign
ed
with the oil·injection
pump drive
gear
.
•
CAUTION
•
Be sure
the
gear
is properly
aligned with the slot
of
the oil-injection pump
shaft.
3.
Secure
pump with two bolts,
lock
washers,
and
washers.
Tighten
bolts to 0.7 kg-m (5
ft-Ib).
55
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