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650 carb mixture screws?
Posted: Sat Jun 27, 2015 7:15 pm
by Doc44
Hi folks. Anyone know how many turns out the carb mixture screws should be on a 650gx?
Re: 650 carb mixture screws?
Posted: Sat Jun 27, 2015 7:16 pm
by Doc44
And what size main jets are standard? Should jets be changed when using aftermarket exhaust systems? Cheers.
Re: 650 carb mixture screws?
Posted: Sun Jun 28, 2015 1:13 pm
by Uncle Bob
Workshop Manual says #110 (#112.5 for West Germany). The mixture screws are stated as Pre-Set but a quick Google looks like 2.5 seem to be the way to go.
Useful rebuild guide
http://www.mtsac.edu/~cliff/storage/gs/ ... torial.pdf, see last page on tweaking the mixture screws once running.
Whether mains should be changed on aftermarket probably depends on the system used. I think the main stream pipes like Motad, probably not, but I think I'll have to for my 400 with Yoshi on it.
Rob
Re: 650 carb mixture screws?
Posted: Sun Nov 22, 2015 9:03 pm
by fossie
1.5 turns out works fine but a touch lean 2.5 would be top range , really depends on how worn carbs are.
Set to 1.5 run the bike and adjust screws until even, then repeat.