Polaris 1999 ATV XPLORER 400 - Manual (Page 6)

6
Exclusive Demand 4 Drive System (All Wheel Drive)
This Polaris AWD is equipped with a unique,
Polaris exclusive, Demand 4 Drive (AWD)
system which is activated by a switch on the
right handlebar. When the switch is “off” the
4x4 is in 2 wheel drive at all times. When the
switch is “on” the 4x4 is in Demand 4 Drive and
the front wheels will automatically engage
anytime the rear wheels lose traction. When
the rear wheels regain traction, the front
wheels will automatically disengage. NOTE:
The override switch also allows activation of
Demand 4 Drive (AWD) in reverse, if Demand
4 Drive switch is on.
There is no limit to the length of time the ve-
hicle may remain in Demand 4 Drive.
The Demand 4 Drive switch may be turned on or off while the vehicle is moving. If the switch is turned off when the front hubs are
driving they will not release until the rear wheels regain traction.
CAUTION: Do not switch on Demand 4 Drive if the rear wheels are spinning. This may cause severe drive shaft and clutch damage.
Engage the Demand 4 Drive switch before getting into conditions where front wheel drive may be needed. If the rear wheels are
spinning, release the throttle before turning the Demand 4 Drive switch on.
The following Oil Pump Adjustment Procedure , taken from page 106 of your ATV Owner’s Manual, has been revised.
Oil Pump Adjustment Procedure
400 Engines
1. Before adjusting the oil pump, check engine idle RPM and carburetor adjustments
which are found in the owner’s manual supplement.
2. Loosen throttle cable jam nut and turn adjuster in or out until there is 1/16² - 1/8² (.16
- .32 cm) of throttle lever travel before throttle slide starts to open. See Owner’s Manual
Supplement.
3. Place very slight pressure on the throttle lever until all freeplay is removed from throttle
cable (to the point where the carb slide is just starting to rise).
4. Lift boot up off adjuster sleeve. Remove the oil pump cover. Loosen the cable adjuster
locknut. Adjust oil pump cable until marks align (D) when the throttle slide just begins
to raise.
5. Tighten the locknut.
6. Recheck adjustment. If correct, slide boot all the way down over the upper portion of the bottom nut to ensure good sealing
against water entry. Reinstall oil pump cover and gasket.
PN 9914907 Rev 03 12/98
Printed in U.S.A.
AWD Switch
Oil Pump Adjustment 400
D
Boot
Adjuster
Sleeve
Upper Portion
of Bottom Nut