OWNER’S MANUAL SUPPLEMENT
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1999 SCRAMBLER 500
PN 9914970
IMPORTANT: This is a supplement to your owner’s manual. This information should remain with your owner’s
manual at all times.
Specifications
SCRAMBLER 500
Body Style Gen III
Gross Vehicle Weight 845
Fuel Capacity 3.5 U.S. Gallons
Gearcase Oil 16 Ounces
Engine Oil Capacity 2 Quarts
Front Rack
(Maximum - Capacity)
C
Rear Rack
A
(Maximum Capacity)
Tongue Weight 30 Lbs.
A
C
Tow H it ch Accessory
Tow Capacity 850 Lbs.
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Turn Radius 60 inches
Ground Clearance 6.5 inches
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Height 47 inches
Length 74.5 inches
Seat Height 33 inches
Weight 542 Lbs.
Wheel Base 48.5 inches
Width 45.5 inches
Drive System Type PVT
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Shift Type Side Lever (F-N-R)
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Gear Reduction - Low Not Applicable
Gear Reduction - Reverse 4.74 / 1
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Gear Reduction - Foward 3.06 / 1
Front Drive (ratio) 2:1
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Final Drive (ratio) 13/36 76P
Center Drive (ratio) Not Applicable
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Drive Chain 520 O-ring
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Front Tire 23 x 7 - 10
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Rear Tire 22 x 11 - 10
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Tire Pressure (front) 4 PSI
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Tire Pressure (rear) 3 PSI
Accessory (30 Lbs.)
Accessory (60 Lbs.)
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SCRAMBLER 500
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K
K
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Front Susp. - Mac Strut 8.2 inches
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Rear Susp. - Progressive
U
Rate Swing Arm
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P
Shock Adjustment Thread Adjust
Front Brake Fixed Disc, Hydraulic Floating
B
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Rear Brake Hydraulic, opposed piston
A
ESAuxiliary Brake Hydraulic, opposed piston
Park Brake Hydraulic Lock all wheel
Engine Model Number EH50PLE-04
Engine Type 4 cycle, single cylinder
Lubrication Dry Sump
Bore x Stroke 92 x 75
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Displacement 499
Compression Ratio 10:2 Full Stroke
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Engine Cooling Liquid
Alternator Output (watts) 250
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Carburetion BST 40
Main Jet 155
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Pilot Jet 40
Needle Jet Y-0
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Pilot Screw 2.0
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Jet Needle 6H25-94-3
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G
Ignition CDI
Timing 30° @ 3500 ± 1.5
Spark Plug Gap .028 inches / .7 mm
Spark Plug Type NGK BKR6E
Exhaust USFS Approval Pending
LIHeadlight (watts) 2 dual beam, 30 / 30
8.8 inches
Caliper
caliper, rear axle fixed disc
caliper, rear axle, fixed disc
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Taillight (watts) 8.26
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Brake Light (watts) 26.9
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SCRAMBLER 500
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Battery 12 V 14 AH
DC Plug In - Rear Accessory
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A
DC Socket - Forward Accessory
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U
Electric Start Standard
High Beam Indicator Standard
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High Temp Indicator Standard
Windshield Accessory
F
Low Oil Light Not Available
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Neutral Indicator Standard
Reverse Indicator Standard
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Speedometer Accessory
E
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Tool Kit Standard
Scrambler 500
(Engine - EC50PLE-04)
Carburetor Jetting
Altitude Ambient
Meters
(Feet)
Temperature
0-900
(0-3000)
900-1800
(3000-6000)
1800-2700
(6000-9000)
2700-3700
(9000-12000)
Below 0°F
(Below --18°C)
167.5 160 155 147.5
160 155 147.5 142.5
152.5 147.5 142.5 135
145 140 135 130
Clutching
Altitude Shift
Meters
(Feet)
0-900
(0-3000)
900-1800
(3000-6000)
1800-2700
(6000-9000)
2700-3700
(9000-12000)
0° to 40°F
(--18°Cto
+5°C)
+40° to +80°F
(+5°Cto
+26°C)
+80°F&Above
- Pilot screw in 1/2 turn
- Pilot screw out 1/2 turn
Weight
Clutch
Spring
10WH Blue/Green 1/1
10WH Blue/Green 2/1
10RH Blue/Green 1/1
10RH Blue/Green 2/1
Driven *
Helix
* - Driven uses Red Spring
(+26°C&
Above)
3
The following information (page 35) of your ATV Owner’s Manual, has been revised.
Engine Electrical Switches
1. Override Switch (Reverse Speed Limiter) - This vehicle is equipped with a reverse
speed limiter system. To obtain additional
power while backing up, depress the override button. WARNING: Never activate the
override button while throttle is open as loss
of control may result, causing severe personal injury or death.
NOTE: The override switch also allows activation of Demand 4 Drive (All Wheel Drive)
in reverse, if Demand 4 Drive switch is on.
2. Main Switch - This switch must be turned
clockwise to the “on” position to start the engine.
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WARNING
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3. Emergency Engine Stop Switch -The
engine will not start or run when the switch is
in its “off” position. Its purpose is to provide
the operator with a quick means of engine
shutdown in case of stuck throttle or other
emergency.
NOTE: Both the main switch and the emergency engine stop switch shut off all electrical power to the entire vehicle including
lights.
4. Engine Start Button - Slide the stop switch to the center “run” position and push up to s tart.
Backing your ATV can be dangerous!
You could hit an obstacle or person behind you; or the vehicle could tip
over rearward on a steep incline causing severe injury or death.
Always back slowly avoidingexcessive speed anddo not use the reverse
speed override switch system unless additional power is required for vehicle movement.
Avoid backing on steep inclines.
Avoid turning at sharp angles in reverse.
Demand 4 Drive
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
AWD Switch
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 vehicle 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.
4
The following Throttle Lever information, taken from page 38 of your ATV Owner’s Manual, has been revised.
Engine Throttle and Choke
Throttle Lever
Engine speed and vehicle movement are controlled by pressing the throttle lever. The throttle system is spring loaded and engine speed returns to idle when
the lever is released. This vehicle is equipped with a Polaris Electronic Throttle
Control (ETC) which is designed to reduce the risk of a frozen or stuck throttle.
In the event the throttle cable should stick in an open position, the engine will stop
and power to the rear wheels will cease when the operator releases the throttle
lever.
Choke Lever
Refer to the engine starting procedure on page 56 for correct choke and throttle
settings during starting.
Choke
Throttle
WARNING
The Electronic Throttle Control (ETC) stops the engine in the event of a throttle system malfunction and is
provided for your safety. Do not attempt to modify the ETC system or replace it with any after market throttle
mechanisms.
WARNING
Do not start or operate an ATV with sticking or improperly operating throttle controls. A stuck or improperly
operating throttle could cause an accident resulting in severe injury or death.
Always contact your dealer for service repairs whenever throttle problems arise.
Failure to check or maintain proper operation of the throttle system can result in the throttle lever sticking
during riding and cause an accident.
Always check the lever for free movement and return before starting the engine and occasionally during rid-
ing.
Throttle Cable Free Play Adjustment
Throttle cable free play is adjusted at the
handlebar.
1. Slide the boots off inline cable adjuster
sleeve. Loosen adjuster locknut.
2. Turn adjuster sleeve until 1/16² to 1/8²
freeplay is achieved at thumb lever.
3. Tighten locknut and slide boots over
cable adjuster until they touch at the
middle point of adjuster.
Boot
Adjuster
Sleeve
Locknut
Boot
PN 9914970 Rev 05 1/99
Printed in U.S.A.
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