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Author Topic: Jiffy Carb  (Read 1400 times)

Offline burts122

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Jiffy Carb
« on: Jan 28, 2011, 06:16 PM »
Hey,

I got a Jiffy Stealth STX for christmas. It has the Tecumseh engine.

Anyway, I've only used it 3 times but its never run great. It seems that it will only operate under load when at half choke. I can't turn the choke off without it stalling. Even at half choke it bogs down on me. I've maybe drilled 20 holes.

Anyway, when it cuts ice its incredibly fast. Does anyone else have this issue? I think its the high speed screw in the carb but I'm not sure. I can't tinker with it because its got those red things in the screws. Can you take them out? What should I do.

Thanks.
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Offline Fisherman 1

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Re: Jiffy Carb
« Reply #1 on: Jan 28, 2011, 07:34 PM »
Yes you can pop off the red cap, open it up another 1/4 turn counterclockwise.  Once running, the machine should not require choke at all. 
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Offline burts122

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Re: Jiffy Carb
« Reply #2 on: Jan 28, 2011, 09:40 PM »
You are referring to the high speed screw right? or both?

Thanks for the advice!
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Offline Fisherman 1

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Re: Jiffy Carb
« Reply #3 on: Jan 29, 2011, 03:44 PM »
The high speed one, should be the bigger of the two.  Those plastic caps are there to get people to avoid monkeying with preset carburaters, one of those California things
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Offline Hesperus

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Re: Jiffy Carb
« Reply #4 on: Jan 31, 2011, 10:02 AM »
HMMM, I'll have to go out and check mine.  I have the 2hp Pro with the Tecumseh engine and did not see any screws or caps so I figured it was fixed jet.  I don't think I missed anything.
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Offline dkfry

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Re: Jiffy Carb
« Reply #5 on: Jan 31, 2011, 01:17 PM »
Yep if you have a 2hp Jiffy STX the carburetor is not going to have any high or low end screws to adjust.
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Offline Hesperus

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Re: Jiffy Carb
« Reply #6 on: Jan 31, 2011, 02:17 PM »
Looks like I may have to investigate the carb # and see if I can find the same one with needles.
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Offline jepik

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Re: Jiffy Carb
« Reply #7 on: Feb 01, 2011, 01:50 PM »
my  2hp. jiffy stx tecum. would idle fine but would bog down when drilling..same problem..no adjustment..somebody on ice shanty said to try higher octane gas..went from 87 to 92.. it help it a lot..still bogs some but a lot better.. mine had not drill over 30 holes since I bought it new..used hand or drill attactment.. :tipup:
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Offline Lifeguard

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Re: Jiffy Carb
« Reply #8 on: Feb 01, 2011, 04:01 PM »
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Offline Hesperus

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Re: Jiffy Carb
« Reply #9 on: Feb 02, 2011, 10:59 AM »
Quote from: Lifeguard on Feb 01, 2011, 04:01 PM
This thread might be useful:

http://www.iceshanty.com/ice_fishing/index.php?topic=97739.msg955099#msg955099



Definitely helpful for those with adjustable carb models.  I found a replacement carb for my non adjustable 2HP jiffy for $23.95.  A Tecumseh repair kit is $17.70

I figure I'll order a carb, a main jet and a few main jet sealing plugs and start to play a bit with slowly enlarging the main jet size.  Might save me from buying a different auger...

Carb part # 640347
Oregon # 050-660
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Offline burts122

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Re: Jiffy Carb
« Reply #10 on: Feb 03, 2011, 03:08 PM »
Fisherman1 you're the man!

Gave it a quarter turn and it ran like a champ [in the garage.] I'll keep the screw driver with me on the ice tomorrow but I let it run for a while so she should be good to go.

On a side note it freaked my neighbors right up when I fired that thing up. So loud they practically dove in the snowbank! City folks for ya haha.
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Offline Fisherman 1

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Re: Jiffy Carb
« Reply #11 on: Feb 03, 2011, 04:45 PM »
Glad to help and kill the frustration factor.  ;D
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