Question about Husqvarna , No.455 Rancher, 20" Gas - Powered Chainsaw

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I have a husqvarna 55. I put in a new carb, coil,

I have a husqvarna 55. I put in a new carb, coil, gas line, spark plug and gas filter. It starts but will not run off of idle. Tried h-speed idle screw w/no success. Looking for help please. What is the H/L start for the adjustment needles?

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If you are still having problems I would check or replace white grommet inserted into cylinder and connected to manifold,they have issues with breaking or blowing out.This model also has problems with the black intake boot not sealing around cylinder and manifold,an easy check by spraying a LITTLE carb cleaner around problem area.

Posted on Nov 18, 2009

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Preset both needles about 1-1/2 to 2 turns CCW from CW stop. Set H needle first after warm-up. At high speed, engine should 4-stroke with no load, but smooth out with light load(cutting wood). Set idle speed so that it will keep running, then adjust L needle so that engine tries to follow the throttle, but idles fairly smoothly. Readjust idle speed so that the clutch is not trying to drive the chain.

Posted on Aug 02, 2009

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hi
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