91 SRV carb questions....

8

87gtNOS

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Nov 29, 2006
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Toronto
Pilot screw is 'air' on these right? Meaning the more turns out, more air (leaner)?

Also, mine was at 1.25 turns or so when I got it...I see spec is 2 turns out.

I am finding that Yamaha changed the main jet spec to 145? I have a 145 main in mine.

Thanks
 

The screw in question here is a fuel screw. More turns out =richer. Generally if the screw is on the engine side of the throttle valve it will be a fuel screw. If it is on the air box side, it will be an air screw. Not sure what they run for main jets.It looks like standard from the factory should be a 150.
 
Last edited:
Throttle Junkie35 said:
The screw in question here is a fuel screw. More turns out =richer. Generally if the screw is on the engine side of the throttle valve it will be a fuel screw. If it is on the air box side, it will be an air screw. Not sure what they run for main jets.It looks like standard from the factory should be a 150.
Click to expand...

I believe it's on the airbox side...so leaner if you loosen it....
 
my bad, looking at the diagram, looks like you sir are correct, FUEL screw.

Thanks, I was just trying to make sure.
 
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