Magnum 4 X 4 W98Ac42A (Engine - Eh-42Ple-02) - Specifications And Clutching And Jetting Guidelines For Altitude And Temperature - Polaris Magnum 2x4 Service Manual

FUEL SYSTEM/CARBURETION
1998 Specifications
Magnum 4 x 4
W98AC42A
(Engine - EH-42PLE-02)
SPECIFICATIONS AND CLUTCHING AND JEITING GUIDELINES
FOR ALTITUDE AND TEMPERATURE
Carburetor, Mikuni BST 34 (Marking 42PL01 B)
Main Jet - 140 Pilot Jet - 40 Pilot Screw - 2.S turns out from lightly seated*
Jet Needle - SF14-3 Needle Jet - P-9
Needle Seat - 1.S Pilot Air Jet - 160
Float Level 13.0mm (Page 4.37)
Throttle Valve - #100
Flywheel Marking: FF9S02 COl Marking: CU2S09 Alternator Output: 200 Watts
Ignition Timing: 30 0 BTDC
@
3S00 RPM (± 3°) Spark Plug: BKRSES Gap: .028 (.7mm)
Operating RPM: 6000 (± 200) Idle RPM: 1200 (± 100)
*Turn in (clockwise) one quarter turn for each 30 degrees above 60 degrees F.
Observe the following altitude recommendations and set up the vehicle accordingly.
Altitude
AMBIENT Below O°F 0° to 40°F
+40° to +80°F +80°F & Above
TEMPERATURE
(Below -18°C) (-18°C to +SOC) (+soC to +26°C)
(+26°C & Above)
Meters 0-900
150 145 140 135
(Feet) (0-3000)
900-1800
145 140 135 130
(3000-6000)
1800-2700
137.5 132.5
(6000-9000)
2700-3700
132.5 127.5
(9000-12000)
"'--_....II -
Pilot screw in 1/2 turn
Clutching
Altitude Shift Clutch Driven
Weight Spring Helix
Meters 0-900 10MH Blue/Green 2-2
(Feet) (0-3000)
900-1800 10WH Blue/Green 2-2 or
(3000-6000) 2-1
1800-2700 10RH Blue/Green 2-1
(6000-9000)
2700-3700 10RH Blue/Green
2-1
(9000-12000)
5/98 4.41
Polaris Industries Inc.