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Mantis tiller carb zama c1u k27

What is the adjustment on low &high speed screw for a zama c1u carb

Posted by Anonymous on

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6ya6ya
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Posted on Jan 02, 2017

  • 36 Answers

SOURCE: Craftsman 25cc weedwacker (358.791030). Zama

need to adjust the high sscrew. i do mine in 1/4 turns. start machine, full throttle, adjust the h(high) til it clears up.i would start by turning 1/4 counterclock wise, just remember to keep track, in case it runs worse, the put it back to orig. then try the other way. but i suggest 1/4 turn at a time

example... think of a clock when turning screw. straight up and down, 12oc, 1/4 turn will be 3oc, another 1/4 will be 6oc, and so on. hope it helps!

Posted on Sep 22, 2010

  • 173 Answers

SOURCE: diagrams of zama carb c1u

http://www.zamacarb.com/pdfs/TechGuide_2007.pdf

click the link anf find the user guide and instructions

Posted on Jan 19, 2012

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Craftsman 25cc weedwacker (358.791030). Zama carburator (C1U-W19) Just rebuilt carb but did not adjust low speed/high speed screws. Starts on first pull (with choke lever actuated), and after warm up,...


need to adjust the high sscrew. i do mine in 1/4 turns. start machine, full throttle, adjust the h(high) til it clears up.i would start by turning 1/4 counterclock wise, just remember to keep track, in case it runs worse, the put it back to orig. then try the other way. but i suggest 1/4 turn at a time

example... think of a clock when turning screw. straight up and down, 12oc, 1/4 turn will be 3oc, another 1/4 will be 6oc, and so on. hope it helps!

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