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I need to set the low ,high and the throttle. what are the setting. HARD TO START AND STALLS WHEN CUTTING

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  • pataluna Mar 12, 2009

    thanks a lot it works

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6 Suggested Answers

steve_lima
  • 181 Answers

SOURCE: Set fuel mixture with high and low

starting settings are 1 turn on high side and 1 turn on low side.most likly you will be at 1 1/2 on low side and 1 1/4 on high side

Posted on Jan 09, 2009

  • 1 Answer

SOURCE: poulan 2450 wont start

After warming up the engine at part throttle for a couple of minutes, clear it out with a 3 second burst. Then idle the engine.. If the chain rotates, turn the idle speed screw to the left (CCW) until the chain stops.
Turn the LO NEEDLE slowly to the right (CW) to find the fastest engine speed. If this causes the chain to rotate, repeat idle screw adjustment to stop the chain from rotating.
High speed (with throttle wide open). Set needle 1-1/4 turns open, checking for smooth acceleration by opening the throttle wide for 3 seconds. If the saw stumbles, turn needle to the right (CW) 1/8 turn @ a time until smooth acceleration is obtained. Try a saw cut to see if adequate power is available. Continue making 1/8 turn adjustments (CW) until saw shows a power drop when asked to cut. (This indicates too lean a mixture setting.) Then, from the setting in step 3, turn the HIGH NEEDLE 1/4 turn to the left (CCW). Check the cutting ability of the saw again. This should be the best setting for your particular altitude, temp. and humidity conditions.
To pre-set before initally starting the saw, turn LOW and HIGH and IDLE screws in gently till each one just stops. Then turn each out (CCW) 1 - 1 - 1 1/4 turn.
Hope this is helpful. Try www.zamacarb.com/tips.html Select the "Tech. Guide"
Good luck and God Bless.
oft

Posted on Jan 22, 2009

  • 23 Answers

SOURCE: 4 y/o oulan chain saw hard to start and quit running, no spark.

TRY RUNNING AT HALF OR FULL WHEN IT DOES POSSLBY BAD GAS/MIX IF YOU CHANGED THAT ALREADY CARB PROBALY NEED TO BE CLEAN

Posted on May 17, 2009

dontbother10
  • 2220 Answers

SOURCE: What is the factory setting for the throttle and

Workshop Manual for a Husky 357XP/359 (2006 - I will wager yours is similar) follows:
The Husky workshop manual on Appendix A (USA, this probably does not apply to your vintage saw) says "H" 3/4 turn CCW from lightly seated. "L" 1.5 turns CCW from lightly seated.
Page 36 (every other nation on earth) 1 turn CCW from lightly seated for both the "H & L" needles. There is no recommended initial "T" setting. (from manual) "The idling speed is correctly set when the engine runs smoothly in all positions and there is a clear margin to the speed at which the chain starts to move".
These are initial settings and the saw needs to be adjusted for performance. Start with a clean air filter and a fresh fuel mix. I could not find an OM for a 1994, a 1995 says mix @ 50:1 per Husky (1 gallon of premium fuel to 2.6 ounces of quality 2-cycle oil).

This explains performance carburetor adjustment better than I can:
Carburetor Adjustment by Madsens.com
http://www.madsens1.com/saw%20carb%20tune.htm
CW is leaner; to lean will destroy the saw. If over tightened closed (CW) the adjustment screw faces are easily marred; marred adjustments are difficult to impossible to set properly.
Clean the air filter; adjusting with a dirty filter can cause a run lean condition once cleaned and the saw run.

There are 2 wav (sound - idle & full – may not be highlighted) files that I find most helpful, I think you will too. Good Luck. HTH.

Lou

Posted on Feb 24, 2010

dontbother10
  • 2220 Answers

SOURCE: high & low carb needle settings

I would start with both the "H" and "L" needle valves at 1.5 turns CCW from lightly seated then adjust for performance as follows:
Carburetor Adjustment by Madsens.com
http://www.madsens1.com/saw%20carb%20tune.htm

  • CW is leaner; to lean will destroy the saw. If over tightened closed (CW) the adjustment screw faces are easily marred; marred adjustments are difficult to impossible to set properly.
  • Clean the air filter; adjusting with a dirty filter can cause a run lean condition once cleaned and the saw run.
  • Clean the spark arrestor and muffler; if the saw cannot exhale it cannot inhale.
  • There are 2 wav (sound - idle & full - may not be highlighted) files that I find most helpful, I think you will too.
If you have more questions or need additional help please reply below and I will get back to you. Thank you for using FixYa and Good Luck. HTH
Lou

Posted on Mar 16, 2010

Testimonial: "thanks guys&gals i used to work on all this stuff as you get older you tend to lasp onse in awhile. thanks alot mack"

  • 1 Answer

SOURCE: chain will start stalls like it is not getting gas

There should be three lines comming from your carb, one is to the tank, one is a breather, and the other is actually a vacuum line that goes to the bottom of the cylinder. the vacuum line is usually the culprit on poulans that starve for gas. this vacuum line works as the fuel pump, if it's cracked or came off your saw will not run for more than a second or two. the cylinderside is usually the problem, either cut the bad part off and reconnect it or place the line altogether, both these options are a pain in the **** as it's hard to get to, but it's a cheap fix and solves the problem

Posted on Feb 20, 2011

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Hi Jason:
Make and model might help but here's two ideas:
1) Remove muffler and clean it. They can get plugged up with carbon and the saw will run at low RPM but will quit because of excess back pressure when you try to rev it up.
2) Set the high and low speed carb settings. Start the saw then gradually increase engine speed until full throttle. Screw the hi-speed needle in slowly. If RPM immediately drops, back it out until Rpm increases, then starts to drop. Screw back in until peak rpm reached, then starts to drop. Back out to peak, then 1/3 turn more.
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1 Answer

Poulan 2450 wont start


After warming up the engine at part throttle for a couple of minutes, clear it out with a 3 second burst. Then idle the engine.. If the chain rotates, turn the idle speed screw to the left (CCW) until the chain stops.
Turn the LO NEEDLE slowly to the right (CW) to find the fastest engine speed. If this causes the chain to rotate, repeat idle screw adjustment to stop the chain from rotating.
High speed (with throttle wide open). Set needle 1-1/4 turns open, checking for smooth acceleration by opening the throttle wide for 3 seconds. If the saw stumbles, turn needle to the right (CW) 1/8 turn @ a time until smooth acceleration is obtained. Try a saw cut to see if adequate power is available. Continue making 1/8 turn adjustments (CW) until saw shows a power drop when asked to cut. (This indicates too lean a mixture setting.) Then, from the setting in step 3, turn the HIGH NEEDLE 1/4 turn to the left (CCW). Check the cutting ability of the saw again. This should be the best setting for your particular altitude, temp. and humidity conditions.
To pre-set before initally starting the saw, turn LOW and HIGH and IDLE screws in gently till each one just stops. Then turn each out (CCW) 1 - 1 - 1 1/4 turn.
Hope this is helpful. Try www.zamacarb.com/tips.html Select the "Tech. Guide"
Good luck and God Bless.
oft

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