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SPECIFICATIONS
Carburetor Jetting
AMBIENT TEMPERATURE
ALTITUDE
Meters (Feet)
Below
-25°F
(-31°C)
-30° to -10°F
(-34° to -23°C)
-15° to +5°F
(-26°C to -15°C)
0° to +20°F
(-18° to -7°C)
+15° to +35°F
(-9° to +2°C)
+30° to +50°F
(-1° to +10°C)
+45° to +65°F
(+7° to +18°C)
Above
+60°F
(+16°C)
NOTE: Main jet is the first number in each cell; Pilot jet is the second number (in italics)
0-600
(0-2000)
72.5
55
72.5
55
70
50
70
50
70
50
67.5
50
67.5
45
67.5
45
600-1200
(2000-4000)
70
50
70
50
70
50
67.5
50
67.5
50
67.5
50
65
45
65
45
1200-1800
(4000-6000)
67.5
50
67.5
50
67.5
50
65
50
65
50
65
45
62.5
45
62.5
45
1800-2400
(6000-8000)
65
50
65
50
65
50
65
50
65
45
62.5
45
62.5
45
60
45
2400-3000
(8000-10000)
65
50
65
50
62.5
50
62.5
45
60
45
60
45
60
45
60
45
3000-3700
(10000-12000)
62.5
50
62.5
50
60
45
60
45
60
45
57.5
45
57.5
45
57.5
45
Clutching
ALTITUDE
Meters (Feet)
Drive Clutch
Shift Weight
Drive Clutch
Spring
Driven
Clutch
Spring
Driven Helix Chaincase
Gearing/
Pitch
0-900
(0-3000)
N/A RED
(120 PRO X)
(7042118)
N/A N/A 10-42
74P #40
900-1800
(3000-6000)
N/A RED
(120 PRO X)
(7042118)
N/A N/A 10-42
74P #40
1800-2700
(6000-9000)
N/A RED
(120 PRO X)
(7042118)
N/A N/A 10-42
74P #40
2700-3700
(9000-12000)
N/A RED
(120 PRO X)
(7042118)
N/A N/A 10-42
74P #40