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Thread: UP 2 and UP 4 valves question
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Old 08-06-2018 | 10:52 PM
  #10  
Dave Wilshere
 
Joined: Jun 2002
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From: Watford, UNITED KINGDOM
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Are you getting air out of the UP2 to feed the UP4?
The needles allow more air through if you open, less close...like a carb needle. Loosen the nut first and hold the needle while you tighten the locking nut or it will turn with the nut.
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