Arctic Cat ZR 900 Series 2006 Operator's Manual page 47

3. Using a large flat-blade screw-
driver, remove the baffle/reso-
nator tabs from the air-intake
silencer slots and remove the
baffle/resonator to access the
intake bores.

NOTE: The baffle/resonator can
b e r e m o v e d m o r e e a s i l y b y
removing the back tabs first.
4. Rotate the idle speed screws
counterclockwise until all
spring tension is removed.
5. Loosen the jam nut securing
ea ch thr ott le ca bl e swi ve l
adapter; then rotate each swivel
adapter clockwise until each
piston valve bottoms in the pis-
ton valve bore.
6. In turn on each carburetor,
place a finger lightly against the
side of the piston valve; then
rotate the carburetor swivel
adapter counterclockwise until
slight upward movement of the
valve is noted.
7. Check to make sure the valves
start to open at the exact same
moment by placing a thumb and
finger against the valves; then
lightly compress the throttle
lever.
46

NOTE: If an individual piston
v a l v e s t a r t s t o o p e n b e f o r e
another, rotate the swivel adapter
on the valve which is lifting first
clockwise, just enough to syn-
chronize the valves. Recheck by
repeating steps 4-7.
8. With the piston valves synchro-
n i z e d , t i g h t e n t h e s w i v e l
adapter jam nuts securely. Slide
the rubber throttle cable caps
down over the swivel adapters.

NOTE: There must be free-play
in the throttle lever on all models.
! WARNING
Be sure to tighten the swivel
adapter jam nuts securely. If a
swivel adapter jam nut is not
tightened , the adju ster can
rotate out of the carburetor cap
causing the piston valve not to
return to the full-closed posi-
tion.
0727-156
9. In turn on each carburetor,
place a finger against the piston
valve. Rotate the idle speed
screw clockwise until it con-
tacts the valve.
10. Compress the throttle lever to
the full-open position; then
rotate each idle speed screw
clockwise 2 complete turns.
Release the throttle lever.

NOTE: There must be 0.75-1.5
mm (0.030-0.060 in.) free-play
between the throttle lever and the
control housing.
11. At this point, there must be
0.75-1.5 mm (0.030-0.060 in.)
of cable free-play gap in the
throttle lever. If there is no
cable free-play in the throttle
l e v e r, t h e t h r o t t l e s a f e t y
switches will not function prop-
erly, and the engine will cut out
in the idle position.
MAINTENANCE