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os 91 fs surpass pumped

Old 05-10-2007, 08:40 PM
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Default os 91 fs surpass pumped

have a91 surpass pumped if i close the the needle all the way the engine keeps running i tryed adjusting the regulator but i am not sure of the right way of doing this what is the right way of adjusting the regulator and the carb in unison?
Old 05-11-2007, 11:35 AM
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Default RE: os 91 fs surpass pumped

There is no adjustment for the regulator on the O.S. FS-91 Surpass II with pump. You just adjust the high-speed needle as necessary. If the engine will still run when the needle is fully-closed, then your carburetor body has a damaged needle seat, and will need to be replaced. You should also replace the needle at the same time.
Old 05-16-2007, 01:13 PM
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Default RE: os 91 fs surpass pumped

Hi bill can you give me a ballpark figure on a new needle and seat also ware i can get them. now on the regulator once i change the needle and seat i'll have to reajust it right ? is there a setting for that or do you play it by ear i don't have a manual for this as i bought it used new the reason i am asking is i have tryed adjusting the regulator so its got to be out of adjustment i would think. Any help you can give me would be most helpfull as this is first pumped four stroker i have had. thanks john
Old 05-17-2007, 09:59 AM
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Default RE: os 91 fs surpass pumped

Answered at:

http://www.rcuniverse.com/forum/m_5863709/tm.htm

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