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Dan becker Posted on Jan 19, 2014
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Chainsaw chain keeps running

When I let off the gas the chain keeps running at high speed for approximately 10 seconds. It is very different from all other chainsaws I've used and it is incredibly dangerous. I did some jet adjustments and the carb adjustments just to keep it running. New saw. Husky 240

1 Answer

Andrew White

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  • Husky Master 2,239 Answers
  • Posted on Jan 19, 2014
Andrew White
Husky Master
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Joined: Dec 08, 2010
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This is a carb adjustment issue and needs to be rectified before using it again, the L jet on the carb is set too lean, if you cannot correct yourself i would suggest taking it to the local chainsaw shop.

5 Related Answers

Anonymous

  • 4088 Answers
  • Posted on Jun 17, 2010

SOURCE: chain saw carburator settings for husqvarna 61

Turn both screws CW to stops (lightly), then back out CCW 1-1/2 turns each. This is a basic setting and the engine should start and run. Allow the engine to warm up, then pull the throttle full on. Turn the H jet screw CW until the engine starts to speed up, but still 4-strokes. Proper adjustment occurs when the engine is 4-stroking, but immediately 2-strokes when cutting. This gives best power and lowest heat. Release the throttle and adjust L jet CW until the engine idles fairly well, but will allow the engine to 'follow the throttle'. Adjust idle speed screw so that the chain stops turning, but the engine continues to run. Hope this helps!

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steve_lima

steve

  • 181 Answers
  • Posted on Jun 01, 2009

SOURCE: I would like to know how to adjust the carburator of McCulloch 3516 chainsaw 35cc/cm 46759-77

the carbuator has two 2 adjusting screws on it.one is high side and the other is low side.start by turnig them both in until they touch bottom.now turn them both out 1 1/2 turns.this should start and run saw.throttle saw up to full throttle and adjust high side in until you get the best RPM out of saw.do not adjust high side any less then 7/8 turn out from bottom.if you do you will burn saw up from to lean burn.once the high sie is set now adjust low side until the saw will idle by it's self.let me know if this helped you.......

Anonymous

  • 1 Answer
  • Posted on Mar 24, 2009

SOURCE: homelite chainsaw carb adjustments

bear973 you must make sure that that in tank filter is seated in right position and not just floating around inside the tamk

Anonymous

  • 10865 Answers
  • Posted on May 06, 2009

SOURCE: chainsaw leaks chain oil when not in use

The oiler on most chainsaws is designed to be gravity fed. For that reason, if there is oil in the oiler it will drip out. There is no fix to this except for awareness. When possible stop work when you need to refill the oiler. when not possible, expect it to leak and plan for it. for example, store the saw in a tray with some oil-dri absorbant clay in the bottom.

Anonymous

  • 3 Answers
  • Posted on May 26, 2010

SOURCE: Gas/oil ratio mixture; chain oil lubricant

Call their customer service at 1-800-242-4672 there are options to choose for gas/oil ratio mixtures info.

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Stihl 090 Chainsaw carburetor get way too much gas at high speed, even though HS jet is completely closed.

You have an internal circuit leak in the body itself, my friend. Get a new carb, it's still going on a $1000 saw and will make it run like new again.
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I put a new bar and chain on my craftsman 18" chainsaw because the chain keeps coming loose. I am still having the same problem, after running 10 seconds, the chain falls off.
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When idling chain keeps turning

if this is happening, then your chainsaw is just idling to fast, you need to turn down the idle speed a little. on the carby, there are 3 screws, 2 small (H), (L), and a larger screw is the idle speed one, turn anti - clockwise to reduce idle speed.
Hope this helps.
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The blade spinng fast and not pulling trigger

The idle speed screw (not the idle jet screw) is set too high. Turn it CCW while running until the chain stops turning, yet the engine keeps running. Hope this helps!
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Husky 345 chainsaw will only run with choke almost completely out. New air filter, spark plug, and fuel filter. Also replaced gas.

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The second hand McCulloch 120 chainsaw I purchased

I think the pre-adjust settings are to turn jets in all the way and back out 1.5 turns each. then:

You will find a Low and High adjustment screw. At idle turn the screw in or clockwise until the rps starts to decrease. Then start turning it out till you hit max idle rpms. Turn screw back in a quarter to half turn and it should be idling smoothly. Be careful here and get someone to hold saw if necessary but hold in throttle to full speed and do the same with high adjustment screw. turn it in till rpm starts to drop then back it out until you get to max rpm and it won't go any higher then turn it back in a half a turn.
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Start the engine and turn the high speed screw "H" in(clockwise)until the engine starts to slow down(the fuel mixture is to lean,not enough gas).

Slowly turn the screw out(counterclockwise)until the engine begins to run smoothly,keep going very slowly until the engines just begins to run rough again(rich condition,watch for black smoke from exhaust).

Then turn the screw in again(clockwise) to a point about half way between lean and rich condition.This is the properly setting.

The low speed screw"L" adjust in the same manner.

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best regards savumihai71
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