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Author Topic: 5100 carb's  (Read 427 times)

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Offline farmboy

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5100 carb's
« on: July 21, 2014, 12:01:28 pm »
Last one I tuned I noticed the H screw was really touchy minute adjustment would radically alter the rpm's.  I'm talking about 1500-2000 rpm's.  This one is for my grandson (NIB) saw 2008 ym.  It is pig rich @ 12,200 slight I mean slight turn 14,500.  He nor his Dad know anything about tuning a saw and I don't want to give it to him pig rich.  What's up with these carbs I remember the last one was real sensitive too.
 I remember Randy (MM) quit porting them because of carb problems anybody know what the prob. was or is it the same as mine.
Shep
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Offline aclarke

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Re: 5100 carb's
« Reply #1 on: July 21, 2014, 01:13:04 pm »
Try lowering the fulcrum arm height a bit and see if that makes it less senstive
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Offline fordfairlane78

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Re: 5100 carb's
« Reply #2 on: July 25, 2014, 09:43:41 am »
If it's the same carb as put out on the 5105 & 510 (+others in older series) zama c1q dm14 it could be the troublesome little valves inside. I tried 3 used ones on a 5105 before Killian red Leo got me in touch with a gentleman selling them new for a good price....zama wont sell just the little valves.....
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Offline aclarke

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Re: 5100 carb's
« Reply #3 on: July 25, 2014, 10:42:03 am »
The inlet needle isn't available and there are no be that cross over? ?
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