Polaris Widetrak LX 2008 - 2007 Trail Rmk

1.10
Model Specifications
9923396 - 2007-2012 EDGE/Widetrak LX Service Manual
©2011 Polaris Sales Inc.
2007 Trail RMK
Model Numbers: S07NJ5BS / S07NJ5BE
Engine
Engine Type
Fuji Fan-Cooled / Piston
Port w/Reed Assist
Induction
Model Number EC55PM110
Displacement / # Cylinders 544cc / 2
Bore (inches/mm) 2.87 / 73
Stroke (inches/mm) 2.56 / 65
Piston to Cylinder
Clearance (inches/mm)
.0039 - .0053 (.10 - .135)
Installed Ring Gap
(inches / mm)
.016 - .022 (.40 - .55)
Operating RPM ±200 7000
Idle RPM ±200 1600
Engagement RPM ±200 3800
Carburetor Settings
Type Mikuni VM34
Main Jet 210
Pilot Jet 35
Jet Needle/Clip position 6BGY41 / 2
Needle Jet Q-0 (480)
Throttle Gap (Under Cutaway)
(in/mm)
Drill Bit Size
.264 / 6.71
G - 17/64
Cutaway 3.0
Valve Seat 1.5 Viton
Starter Jet 1.5
Pilot Air Jet 2.5
Air Screw (Turns Out) .75
Fuel Octane (R+M/2)
(Minimum)
(Recommended)
87 Non-Oxygenated
89 Oxygenated
Carburetor Jetting
Altitude
Meters
(feet)
Ambient Temperature
< -25°F/<-35°C
-30°F to -10°F/-34°C to -23°C
-15°F to +5°F/-26°C to -15°C
0°F to +20°F/-18°C to -7°C
+15°F to +35°F/-9°C to +2°C
+30°F to +50°F/-1°C to +10°C
+45°F to +65°F/+7°C to +18°C
>+60°F/>+16°C
0-600
(0-2000)
270
#4
260
#4
250
#4
240
#3
230
#3
220
#3
210
#2
200
#1
600-1200
(2000-4000)
260
#4
250
#4
240
#3
230
#3
220
#3
220
#2
210
#2
200
#1
1200-1800
(4000-6000)
250
#4
240
#3
230
#3
220
#3
210
#2
210
#2
200
#2
190
#1
1800-2400
(6000-8000)
230
#3
220
#3
220
#3
210
#2
210
#2
200
#2
190
#1
180
#1
2400-3000
(8000-10,000)
220
#3
210
#3
210
#2
200
#2
190
#2
190
#2
180
#1
170
#1
3000-3700
(10,000-12,000)
210
#3
200
#3
190
#2
190
#2
180
#2
180
#2
170
#1
160
#1
Clutch Settings
ALTITUDE
meters
(feet)
DRIVE CLUTCH DRIVEN CLUTCH
Shift
Weight
Clutch
Spring
Clutch
Spring
Driven
Helix
Gearing
0-600
(0-2000)
10-64
BLU/WHT
7041781
RED/BLU
7043057
56/42 .36
LW ER
19:43 - 74
600-1200
(2000-4000)
10-62
1200-1800
(4000-6000)
10-60
1800-2400
(6000-8000)
2400-3000
(8000-10,000)
10-58
3000-3600
(10,000-12,000)
10-56
Drive Clutch Bolt Torque: 50 lb.ft. (68Nm)
Re-torque after running engine.