Arctic Cat ZR 900 Series 2006 Operator's Manual page 46


NOTE: Carburetor adjustments
and changing main jets may be
done by the snowmobile owner if
qualified to do so. If the owner
does not feel qualified, take the
snowmobile to an authorized Arc-
tic Cat Snowmobile dealer for this
service. This expense is at the
discretion and expense of the
snowmobile owner.
! CAUTION
Make sure to perform these
adjustment/synchronization
procedures on all carburetors.
Adjusting Choke Cable
1. Be sure the ignition switch key
is in the OFF position and the
brake lever lock is set.
2. Loosen the jam nut securing
each choke cable adjuster.
R o t a t e e a c h c h o k e c a b l e
adjuster clockwise until it bot-
toms against the brass plunger
cap.
3. Slowly rotate one choke cable
adjuster counterclockwise
while checking the choke lever
for free-play. As soon as all
free-play has been removed
from the end of the lever, stop
rotating the adjuster.
MAINTENANCE
4. With free-play removed from
the lever, slowly rotate each
choke cable adjuster once again
clockwise while checking the
choke cable lever for free-play.
Adjust until 3 mm (1/8 in.) free-
play between front bottom edge
of lever and housing is attained.
Securely tighten the adjuster
jam nut.

NOTE: If a carburetor choke
cable is adjusted too tight, the
engine will only operate on one
cylinder at idle.
Synchronizing Piston Valves

NOTE: On some models, the
air-intake silencer is a one-piece
unit, and the silencer boots can
be removed to access the intake
bores. Remove the boots; then
proceed to step 4.

NOTE: On some models, the
air-intake silencer includes a
cover/tool tray assembly and a
baffle/resonator, and the silencer
0727-156
b o o t c a n n o t b e r e m o v e d t o
access the intake bores. Proceed
to step 1.
1. Open the air-intake silencer
cover; then remove the screws
securing the cover/tool tray
assembly to the silencer.
2. Close the cover; then tip the
cover/tool tray assembly for-
ward and out of its slots and
remove the assembly.
732-848B
45