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Old 03-29-2009, 09:49 PM   #34
trykemike
Senior Member
 
Join Date: May 2007
Location: toronto ont canada
Posts: 177
Re: GZ250 power increase.

Hey Quimrider. Thanks for the feed-back re: the "choke test" I was contemplating changing the main jet before I read your posts. I just took the bike out of storage. I set the fuel to prime for 5 secs then used normal starting procedures . The bike started right away and settled down to idle approx 1400-1500 rpm. I used the choke trick moving until rpm rose to 1750. The bike accelerated briskly ( easily left all cars way back off the line at the intersection. I went onto the main hwy ( our equivalent to the inter-state ) I took 3 rd to 65k 4 th to 90 k and 5 th went easily to 110 k . I kept rpm under 7000 about 6500. She is running perfectly. With fresh oil rapid shifting in either direction was smooth. Tried a speed shift @ 6500 all gears from a stop light after the hwy run. Not a "jet-bike" but quick enough. Now waiting for more warm days for the run to the lake and some lazy 80 k cruising in the country side.
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