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Honda ATC Manuals
Honda ATC Tech Spec's
"work in progress"
ATC 250cc and Up Carb Specs
Mixture Screw Turns Main/Pilot
1981-82 ATC250R 158-142/50
1983-84 ATC250R 130/50
1985 ATC250R 2.0 148-138/52
1986 ATC250R 2.25 150-140/42
1985-87 ATC250ES 2.0 130/38
1985-86 ATC250SX 2.0 130/38
1987 ATC250SX 1.25 130/38
​1985 ATC350X 1.75 138/42-45
ATC185-200cc Carb Specs
Mixture Screw Turns Main/Pilot
1980-82 ATC200 1.5-2.5 105/38
1982 ATC185S 1.5-2.5 100/38
1983 ATC185S 1.5-2.5 98/38
1984-86 ATC200S 1.5-2.5 100/35
1981 ATC185S 1.5-2.5 95/38
1983 ATC200 1.5-2.5 95/38
1982-83 ATC200E 1.5-2.5 95/38
1984-85 ATC200ES 1.5-2.5 95/38
1984-85 ATC200M 1.5-2.5 95/38
1983 ATC200X 1.5-2.5 110/40
1984-85 ATC200X 1.5-2.5 110-108/40
1986-87 ATC200X 1.5-2.5 122-108/35
Electrical Spec's OHMS
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Stator-
Black / Red WIre - Ground
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ATC200/185cc 1980-86 215-245
(200 ohm or better makes spark typically )
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ATC200E ES M 1982-85 100-400
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ATC200X 1983-85 100-400
ATC200X 1986-87 50-200​​​
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ATC250ES SX 1985-87 50-200​
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ATC350X 1985-86
Nippon Denso 50-150​​
Mitsuba 200-350
Pulse Generator -
Blue/Yellow Wire - Green
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ATC185S ATC200S ATC200 20-30 ​
ATC200M ATC200E ATC200ES 20-30
​ATC200X 1983 30-200
ATC200X 1984-85 50-150
ATC250ES SX 1985-87 (325 +/- 10%) 292-357
ATC350X 1985-86 297-363