Arctic Cat EL TIGRE 1980 Service Manual page 151

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Fuel System
Problem: Carburetor
(0·1/4 Opening)
A. Too Rich
B. Too Lean
Condition
1. Plunger will not seat
2. Pilot air screw too far in
3. Pilot air passage obstructed-
damaged
4. Float/inlet needle obstructed-
damaged adjusted incorrectly
5. Pi lot jet loose
1. Plunger remains seated
2. Pilot air acrew too far out-
damaged
3. Throttle valve sticks open-
damaged worn
4. Pilot outlet obstructed
5. Float/inlet needle obstructed-
damaged adjusted incorrectly
Remedy
1. Adjust service replace
choke cable plunger assembly.
2. Adjust pilot air screw
3. Remove obstruction replace
pilot air screw carburetor
4. Remove obstruction replace
inlet needle float adjust
float tab
5. Tighten pilot jet
1. Adjust service choke
cable plunger assembly
2. Adjust replace pilot air
screw
3. Service replace throttle valve-
throttle cable spring
4. Remove obstruction
5. Remove obstruction replace
inlet needle float adjust
float tab
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Problem: Carburetor
(1/4-3/4 Opening)
A. Too Rich
B. Too Lean
Problem: Carburetor (3/4
-WOT Opening)
A. Too Rich
Condition
1. Pi lot air screw too far in
2. Needle jet jet needle worn-
adj usted incorrectly incorrect
3. Pilot air passage obstructed-
damaged
·4. Pi lot jet loose
5. Float/inlet needle obstructed-
damaged adjusted incorrectly
6. Main jet loose too large
7. Primary air passage obstructed
1. Pilot air screw too far out-
damaged
2. Needle jet obstructed
3. Pilot outlet main jet
obstructed
4. Float/inlet needle obstructed--
damaged adjusted incorrectly
Condition
1. Main jet loose too large
2. Float/inlet needle obstructed----
.
damaged adjusted incorrectly
3. Needle jet jet needle worn---
adjusted incorrectly, Incorrect
Remedy
1. Adjust pilot air screw
2. Replace adjust needle jet-
replace jet needle
3. Remove obstruction replace
pilot air screw carburetor
4. Tighten pilot jet
5. Remove obstruction replace
inlet needle float adjust
float tab
6. Tighten replace main jet
7. Remove obstruction
1. Adjust replace pilot air screw
2. Remove obstruction
3. Remove obstruction
4. Remove obstruction replace
inlet needle float adjust
float tab
Remedy
.
1. Tighten replace with smaller
main jet
2. Remove obstruction
replace
Inlet needle float adjust
float tab
3. Replace adjust
needle
Je~
replace jet needle
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