Polaris SCRAMBLER 90 User Manual

GENERAL INFORMATION
1.15
To change lubricant:
1. Place a drain pan beneath the transmission
lubricant drain plug area.
2. Remove the drain plug and wipe the magnetic end
clean to remove accumulated metallic filings.
Vent Hose
Drain Plug
3. After the lubricant has drained completely, install a
new sealing washer and install the drain plug.
Torque to 14 ft. lbs. (19.3 Nm).
4. Add the proper lubricant through the fill plug hole. Do
not overfill. An indication of over filling is lubricant
leaking from the vent hose after operation.
5. Check for leaks. Discard used lubricant properly.
THROTTLE OPERATION
Check for smooth throttle opening and closing.
Throttle lever operation should be smooth and lever
must return freely without binding.
1. Start the engine and let it idle.
2. Turn handlebars from full right to full left. If idle
speed increases at any point in the turning range,
inspect throttle cable routing and condition.
3. Replace the throttle cable if worn, kinked, or
damaged.
AIR SCREW ADJUSTMENT
1. Turn carburetor air screw in (clockwise) until lightly
seated. Back screw out the specified number of
turns.
Air Screw
Air Screw Adjustment:
50 cc: 1/2 Turn Out from Lightly Seated
90 cc: 1 Turn Out from Lightly Seated
2. Warm up the engine to operating temperature
(about 10 minutes).
3. Set idle speed to 800 RPM.
NOTE: Adjustingtheair screwmay affect idle speed.
Always check throttle cable freeplay after adjusting
idle speed and adjust if necessary.
4. Turn the screw in (to richen) or out (to lean) the
mixture. Adjust air screw for best throttle
response and smooth idle.
5. Re-adjust idle speed if necessary.
IDLE SPEED ADJUSTMENT
1. Start engine and warm it up thoroughly.
Throttle Set Screw
2. Adjust idle speed by turning the idle adjustment
screw in (clockwise) to increase or out
(counterclockwise) to decrease RPM.
Idle Speed:
800 ± 200 RPM
NOTE: Adjusting the idle speed affects throttle cable
freeplay and electronic throttle control (ETC)
adjustment. Always check throttle cable freeplay
after adjusting idle speed and adjust if necessary.
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Polaris SCRAMBLER 90 Specifications

General

Brand	Polaris
Model	SCRAMBLER 90
Category	Offroad Vehicle
Language	English