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Makotosun

1973 Yamaha CT3 - starts and revs full throttle

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Replied by Ht1kid on topic 1973 Yamaha CT3 - starts and revs full throttle

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John First loosen your hand grip all the way start your bike and set the idle with the carb idle screw 1200-1500 rpm then follow the instructions enclosed be sure to check the autolube cable too
13 Aug 2022 14:43 #21

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Replied by Swoop56 on topic 1973 Yamaha CT3 - starts and revs full throttle

The Rev Hang is a symptom of leanness in the pilot circuit .
Try setting the pilot air screw in 1/4 or 1/2 turns to richen idle mixture .
If it was lean , the revs will increase slightly after the adjustment .
 
The following user(s) Liked this Post: AirborneSilva
13 Aug 2022 15:18 #22

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Replied by asco on topic 1973 Yamaha CT3 - starts and revs full throttle

Cable Slack

Throttle Valve Click Test

Carburetor Blow Test

Float Height

Needle Working 

Middle Position E clip

1 1/12 Turns Out

0 Rings 

 
YAMA-LAND RESTORATION,
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1971 CT1-C (BRANDY)
1970 DT1-C (MONICA)
1972 AT2M (ZIFFLE)
1970 CT1-B (HULK)
1971 DT1E (GINA)
1970 CT1-B (CLIDE)
13 Aug 2022 19:54 #23

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Replied by RT325 on topic 1973 Yamaha CT3 - starts and revs full throttle

Opening & closing the throttle you should feel it top out & hear it hit the bottom when shut or feel it touch down on the speed screw if you flick it & let it return by spring, if free operating.
13 Aug 2022 20:01 #24

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