Question about Husqvarna "Chain Saw - 16" Bar, 3 Hp

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Husqvarna 137 Chain won't stop when idleing. I turned the T screw down just enough to keep it running chain keeps on going. Could it be the clutch?

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Your carburator is gummed up. Get some carb. cleaner additive for your fuel, run a couple of tanks of treated fuel through the saw and it will be ok.

Posted on Feb 01, 2010

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Husqvarna 61 vibrates badly when idling.Various things keep coming loose. Tried locktight. 2nd problem is slow to idle from full revs, sometimes won't idle, will cut out when turned chain side down.


Could be a fuel tank vent issue, air leak in fuel line. Husqvarnas love rattling screws loose. Try altering the idle by turning the 'I' screw clockwise.

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Feb 13, 2016 | Husqvarna Garden

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I CAN NOT GET MY SAW TO IDLE DOWN TO WHERE THE CHAIN DOESN'T TURN. I HAVE TO IDLE SCREW ALL THE WAY OUT. WHAT DO I DO NEXT


Check the floats in the carb arent sticking and check there arent any blockages restricting airflow or restricting the movement of the accelerator cable.

Jul 28, 2014 | Husqvarna 3-pk Saw Chain 16" 3/8" .043"...

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42cc 18 inch craftsman chainsaw model 358-351910-18. Saw runs great at idle or while not cutting wood, when starting to cut wood just after the entire bar gets into the wood engine bogs down and chain...


Generally this is a fuel / air ratio problem. Usually it can be solved by a carb adjustment. On the carb there are usually two screws, one marked low or L , the other marked high or H. Low is your adjustment for idle mixture, high is for mixture at full throttle. The saw should Always be adjusted to run well during the cut. Make adjustments a little at a time, then try The saw. Continue small adjustments untill the saw is performing well at full throttle while Cutting.

Aug 09, 2011 | Poulan Pro Chain Saw 46cc 20"

1 Answer

Reference the Husqvarna 350 chainsaw. Why does the chain continue to turn at idle? I just installed a new clutch. Adjusting the idle down causes the saw to shut off upon trying to accelerate.


Sounds like the clutch is still grabing. Easy solution is to apply the chain brake at idle to stop the chain turning. Try adjusting the L screw for a smoother idle.

Aug 05, 2010 | Husqvarna , No.455 Rancher, 20" Gas -...

2 Answers

I have a Makita DCS640120 Commercial Grade 20Inch 64cc and when i turn it on the chain automatically moves how do i fix it to where it will idle till i press the trigger?


Turn the idle speed screw CCW till the chain stops turning at idle, but the engine continues to run. Make sure the carburetor fasteners are tight. Remove the chain cover, bar, and chain. Spin the outer drum of the clutch to check the bearing which lies between the drum and internal components. If it doesn't spin freely, try oiling the drum bearing area and work it into the bearing. If no help, plan on replacing the clutch mechanism. Hope some of this helps!

Jul 12, 2010 | Makita DCS640120 Commercial Grade 20Inch...

2 Answers

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.

Jun 13, 2010 | Stihl 16" Chainsaw Bar Chain Saw 018 025...

1 Answer

How do you adjust the carborator


If this is a late model saw, the adjustment screws have 'D' heads that need a dealer-only 'D' screwdriver. If the screws have slotted heads, then turn both screws CW to stops (lightly), then back each 1-1/2 turns CCW. This is a basic setting, so the engine should start and run. Start the engine and allow to warm up, then pull the throttle full on. Turn H CW until the engine speeds up, but still 4-stroking. When properly adjusted, the engine should 4-stroke, but immediately 2-stroke when cutting. Allow to idle and adjust L CW for fairly smooth running, yet allow the engine to 'follow the throttle'. Adjust idle speed screw to stop the chain from turning, yet the engine keeps running. Hope this helps!

May 20, 2010 | Husqvarna "Chain Saw - 16" Bar, 3 Hp

1 Answer

Carb adjustments/ rule of thumb


Assuming that the adjustment screws 'H' and 'L' have slotted heads, turn both 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 to warm up, then pull the throttle full on. Turn H CW until the engine starts to speed-up, but still 4-stroking. Proper adjustment is when the engine 4-strokes, but immediately 2-strokes when cutting. Release the throttle and adjust L CW for fairly smooth running, yet allows the engine to 'follow the throttle'. Adjust idle speed so that the chain stops turning, but the engine keeps running.

May 21, 2010 | Husqvarna Chain Saw 20" Bar

2 Answers

Tunning specification for a stihl 028 chainsaw?


I'm not sure there are any "endorsed" tuning specs from Stihl as weather, temperature, fuel quality etc all contribute to engine performance.
Pictures of all types are all over the web.

As for the carb tuning procedure, maybe I can help?

Start with fresh fuel, all filters clean, and bar and chain installed. Also, fill the chain oil tank with bar/chain oil and VERIFY that the chain oiler works properly.
Initial fuel mixture settings (the H and L screws) should be 1.5 - 2 complete revolutions counter clockwise from lightly seated. Sight the carb's throttle plate and adjust idle screw counter clockwise until the plate stops moving.(Throttle closed completely.) Then go back clockwise 3 complete revolutions. This will produce an acceptable startup condition on a HEALTHY saw.
Clamp the bar in a STURDY bench vise and roll the chain with the shank of a screwdriver to verify it is clear. BE SAFE!
Choke the saw and pull the starter rope until the engine "burps".
NOTE: If no burp after 6 pulls, stop! Something is wrong.
After the burp, set choke to half and pull starter until it runs. The settings I gave should produce a slightly rich condition and a slightly high idle. (Chain will be in motion!)

Blip the throttle trigger and idle it down just enough to keep it running during the tune procedure.
Step 1) Using the "L" screw (closest to the engine), turn it clockwise until the engine smooths out or possibly increases RPM. Back it out slightly until the engine has a slight "LOPE" sound to it. (Like a drag car on nitro).
Step 2) Accelerate the engine to full throttle and go to the "H" screw (closest to the air filter) and slowly turn it clockwise and note the RPM increase. There will come a point when the saw will "Top-Out" and loose power. Not even enough power to turn an maintain empty chain's RPM! Go back counter clockwise to the edge of that point, and counter clockwise another fourth (1/4) revolution.
Step 3) Idle the saw back down. Again go to the "L" screw and repeat Step 1.
Step 4) Repeat Step 2.
Step 5) Idle the saw down until the chain stops moving completely. NOTE: Don't settle for a "crawling chain" condition. If the steps above are performed well and all else is healthy, you should be able to idle the engine down to a ridiculously low RPM and it will not shut off.

Hope this helps,
Dolf-

Oct 13, 2009 | RTO Spur Sprocket For Stihl 017, 021...

2 Answers

Chainsaw blade turns constantly, even when idling.


If the chain turns on the bar when the saw is at idle, then the idling speed is still too fast. If you turn the idle screw down until the chain stops moving, it should still idle well enough not to stall. The chain should not move at idle.

If you turn the idle screw down until the chain stops and it won't idle, then you have to adjust the low speed carb screw. Odds are if you back off the idling speed until the chain stops moving you'll be fine. The idle screw is usually the one with a spring under it to maintain torsion. Somes the throttle plate, the one with the throttle wire against it, will rest against a screw stop for idle control. This is the easiest adjustment. Just back it out until the plate returns more and the speed will drop.

Make sure it is lubricated and not clogged up with sawdust.

Jun 08, 2009 | Echo 30.1CC Chainsaw With a 14 In.bar and...

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