Arctic Cat Pantera 1978 Service Manual page 217

217
Fuel System
0-1/4 Throttle Opening
Problem Condition
Remedy
Too rich 1. Too large pilot jet. 1. Replace with smaller pilot jet.
2. Clogged pilot air intake,
2. Thoroughly disassemble and clean carburetor.
pilot jet ai r passage, or ai r
bleed opening.
3. Pilot jet mounting loose. 3. Tighten pilot jet.
4. Starter plunger not seated.
4.
Readjust starter cable linkage.
Too lean 1. Pilot jet or jet outlet 1. Thoroughly disassemble and clean carburetor.
obstructed.
2. Throttle valve has worn and
2. Replace throttle valve.
developed play.
3. Carburetor mounting loose,
3. Check mounting for tightness and correct sealing.
causing an air leak.
1/4· 3/4 Throttle Opening
Problem Condition Remedy
Too rich 1. Problem in low-speed circuit. 1. See above.
2. Blocked air passage, air jet, 2. Thoroughly disassemble and clean carburetor.
or the air bleed opening of
the needle jet.
3. Larger needle jet/jet needle 3. Replace needle jet.
clearance due to needle
jet wear.
Too lean 1. Problem in low-speed circuit.
1. See above.
2. Dirt collecting in the main
2. Thoroughly disassemble and clean carburetor.
jet or needle jet.
3/4 - Full Throttle Opening
Problem Condition
Remedy
Too rich 1. Too large main jet.
1. Replace with a smaller main jet.
Too lean
1. Too small main jet. 1. Replace with a larger main jet.
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