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Old March 24th, 2022, 09:07 PM   #1
bigBug
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Name: rossi
Location: Cali
Join Date: Apr 2021

Motorcycle(s): 2007 Ninja 250

Posts: 20
gas washer gasket and weird white rubbery residue all inside the carb. 07 ninja 250

Two problems
My bike has been running good after cleaning the carb, but I found two problems:

1. When I opened it there was a lot of white rubber like residue on the butterfly valves, how could prevent that from happening?

2. Second problem a non starting issue. My gas-tank had to be welded from the petcock side because the factory nut inside cracked. Long story short after re-tapping those holes they weren't perfectly straight and the tap wasn't as perfect as the factory holes and gas leaks. Now I put a Nitrile rubber gasket in between the bolt and nut but the rubber keeps deteriorating from gas. Do you guys know a rubber like material that won't deteriorate from gas to use like a washer gasket?
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Old March 24th, 2022, 11:03 PM   #2
DannoXYZ
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Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C

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How far off are new holes?
Do they still fit inside factory petcock gasket?
Slot and angle holes in petcock so bolts can clamp down fully.
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