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250cc and Above Engine Tech Technical Discussion Forum for 250cc and up Engines

 
 
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  #1  
Old 08-12-2013, 06:28 AM
mb1134 mb1134 is offline
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Default 250cc carb?

I put my P&P head and other parts on the other day, but i could not get it to start up without help from the gas pedal. I am sure this is due to the carb needing adjusted. After looking around the carb, i dont believe i saw an adjustment screw for the pilot jet. Right now it has the stock pilot jet installed and a 130 main. I have no idea the stock size, as it is not written on the jet. Where do i make the adjustment to the circuit? I believe this is a 30mm carb.
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  #2  
Old 08-14-2013, 07:03 AM
mb1134 mb1134 is offline
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Thanks for the great advice guys! I found it, underneath the flippin carb. Great place for it, guess i will have to take carb off to adjust all the time. Any idea what the stock pilot jet size is on these 30mm carbs?
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Trailmaster XRX 150
TK Variator and 1500 Spring
SYC Performance Ported & Polished & Shaved 2 Valve Head, A-10 Camshaft, R2C Filter, and Hammerhead Exhaust

Hammerhead 250GTS
White Torque and Clutch Springs, 18g Rollers, R2C Filter, Ported Polished and Shaved Head, Hammerhead Exhaust
  #3  
Old 08-14-2013, 10:17 AM
351mustanger 351mustanger is offline
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Here are a couple different tools for adjusting that screw. They work great on bikes.

http://www.rockymountainatvmc.com/p/...uel-Screw-Tool

http://www.rockymountainatvmc.com/p/...Adjusting-Tool
  #4  
Old 08-14-2013, 06:21 PM
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Masteryota Masteryota is offline
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Quote:
Thanks for the great advice guys! I found it, underneath the flippin carb.
I feel your pain, my vulcan 1500 is the same way, except it has a hard coolant line partially covering it as well. No wonder the PO left it alone, and boy would it pop back through the intake, blew the carb off once.
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