Poulan 3314 4 weeks old starts great idles fine, problem is when im on full throtle and cutting it will die and and splutter and miss and then stop.
when it is not under load it revs fine. It will cut through 16" wood but it must not go over 3/4 throtle when it will die.
It is about 0 to -15 air temp any ideas?
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Ok, so there are 2 adjustment needles on the carburetor. A H and an L... If your saw is idling fine you won't have to worry about adjusting the L needle.
Your focus will be on the H... the high.
Firstly, if there is any plastic covers on the adjustment needles, remove them. Usually red and white in color... or just white. They serve no purpose(EPA regulations for California). Now adjustart in quarter turn increments.. turn the screw to the right until snug, now back it out 1 full turn. This is your starting point. While holding the trigger all the way in, turn the needle counter clockwise in quarter turn increments, use your ear to tell when you have peak performance.
If you can't hold it down cause it bogs out, just hold it in as much as you can while you turn the needle until you can fully depress the trigger all the way
adjust the L screw in fully till right in,then out 1.5 turns,same with H screw.Then start saw,adjust L screw in or out slowly till you get max revs.You may need to lower idle via idle screw if revs too high.When screw cant acheive better revs,reset idle.Then,rev saw to max revs,adjusting H screw to get max revs,then when max revs acheived,turn screw anti clockwise 1/4 turn out.That gives it enough petrol to cool the tip of the plug
Crank seals could be leaking air in,or carb settings incorrect.screw both mixture screws right in,then out 1.5 turns..set low mixture screw for highest idle,you may need to unscrew the idle screw a bit to keep revs down.adjust H mixture screw at full revs,to get max revs,then unscrew 1/4 turn.may need to reset idle
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
IN SOME MODELS THERE IS 2 SCREWS NEAR THE CARB.THE SMALL ONE IS FOR LOW REVS AND THE BIGGER IS FOR HIGH.START THE MACHINE AND PLAY AROUND WITH THE SMALL ONE UNTIL YOU GET THE RIGHT LOW REVS,LEAVE THE HIGH AS IT.
I ALSO SUGGEST TO DO A TUNE UP.
If you need more help post back!
Thumbs and testimonial are welcome! .
First, check the air filter and clean it well. Then make sure the spark plug is clean and gapped properly.
Then prime, start it up, and allow it to idle, even using the trigger to make it fast idle if you can. Using a small thin screwdiver, turn the high speed idle screw on the carb in small increments to the right, kepping the speed up on the trhrottle.
The idea is to screw it out until it sputters, then screw it a half turn back in. If it doesn't smooth out when turning it to the right, try going to the left.
Afterwards you may find it doesn't run at low throttle well. If not, try the same thing starting to turn left until it smooths out. If it doesn't, screw to the right. Again, the idea is to go until it sounds rough, then back off a half turn.
You should be able to adjust it to the point where you can open the throttle all the way with smooth sure throttle increase.