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Tech Information => General Help => Topic started by: chaddyg8 on November 27, 2017, 07:49:07 AM

Title: 78 invader Carb Questions.
Post by: chaddyg8 on November 27, 2017, 07:49:07 AM

Hello!  I have a few questions about adjusting my carbs. First air screw 1.5 turns off seat and idle screw 3 turns open sound right? Also while looking at my carburetors The throttle Pistons are not the same height? I would assume this is a problem correct? Thanks for any help. 

Title: Re: 78 invader Carb Questions.
Post by: gixxer6 on November 27, 2017, 08:04:26 AM

They should be at the same height, and should start opening at the same time.  Check the throttle cable adjustment to make sure they aren't being held open, then adjust them so the both start to open at the exact same time. 

Title: Re: 78 invader Carb Questions.
Post by: chaddyg8 on November 27, 2017, 08:47:19 AM

Ok sounds good. Did the air and idle screw  adjustments sound right?  Thank you!

Title: Re: 78 invader Carb Questions.
Post by: gixxer6 on November 27, 2017, 11:21:45 AM

I'd have to look it up to be sure, but it sounds about right for a starting point.  I highly recommend buying or making a carb sync tool for the fine adjustment. 

Title: Re: 78 invader Carb Questions.
Post by: Interceptor398 on November 28, 2017, 11:17:39 AM

1978 Invader 440 used VM36 Econo jet carbs marked 36/60.  150 main jets,  pilot jet 30,  power jet 120 round reverse type, needle jet 6 DH4-3,  needle jet P6,  air screw @1 1/2 turns and idle screw @ 3 turns out for an idle speed of 3000rpm.

Title: Re: 78 invader Carb Questions.
Post by: chaddyg8 on November 28, 2017, 12:14:25 PM

Thank you!