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1984 XT 600 secondary main jet purchase? 1984 XT 600 secondary main jet purchase?
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Yamaha Tech Originally the Yamaha XT600 Tech Forum, due to demand it now includes all Yamaha's technical / mechanical / repair / preparation questions.
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Old 2 Jun 2009
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1984 XT 600 secondary main jet purchase?
Hi All,

Thanks for the tips on high RPM sputtering/cutting out. After rechecking the carbs again and fuel supply - all clear. I fabricated and replaced the secondary carb gasket under the top cap of the secondary barrel. The old one was old/brittle that may have caused a vacum leak. I also then ran it without the air snorkels or air box connected - no sputtering or cutting out at high RPM's. Connected the air box, ran it and sputtering again at high RPM's! I drilled lots of holes on the side cover and that definately helped the XT breath better. At this point I'll buy a better air filter and I want to down jet the secondary main jet a size. Where do I purchase different size jets for the secondary carb? I drilled out the original secondary main jet slightly, but I think it's a little too rich at this point. Any info. would be appreciated.
Thanks
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Old 2 Jun 2009
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Join Date: Jul 2001
Location: Bmth, UK
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carb spares
presume you are in UK

try Allens Performance or NRP

Allens Performance Ltd
Unit B9 Moorbridge Road
Bingham
Nottingham
NG13 8GG
or

NRP Carbs and Diaphragms
Unit 2,
Station Approach,
Victoria Station,
Manchester,
ENGLAND,
M3-1NY Tel/Fax: +44 (0)161 832 8646
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