Question about Earthquake Gas Chainsaw, 14 inch CS3814 38cc

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My chainsaw will run only full throttle and when you let of of the trigger it wont idle it will die

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Hey on the carburetor there is 2 mixture screws 1 is for idle up to 1/4 throttle the other is for 1/4 to full throttle the one for idle is closest to the engine. screw it all the way in then unwind it 1 turn. The screw the furthest from the engine screw it all the way in then unscrew it 1 1/4 turns Try to start the saw with just a little throttle. this setting is pretty standard. When you get it to idle then rev the saw and it cuts out as it returns to idle it's running to rich. Just adjust the screw in a little say 1/8 at a time. When it's to lean as soon as you throttle on it will stall. If you have no luck with this...you have a air leak from the carby gasket or the bolts are loose or a blocked exhaust

Posted on Oct 16, 2013

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1 Answer

I have a ppt-260 that when cranked it runs at a high rpm without pulling trigger and does not return to idle, does anyones have a suggestion for a fix?


Check your throttle cable as it may corroded and has the carburetor held in full throttle position or someone has the idle speed screw turn all the way in.

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My chainsaw won't run without full choke on and


Fuel starvation, start by replacing the fuel filter in the tank, check the fuel hoses for leaks up to the carb.

May 22, 2013 | Garden

1 Answer

Saw is idling to high will not adjust down. What do I do.


Open the carburetor area cover and remove the air cleaner so that you can observe the throttle arm and the idle speed screw which stops throttle movement to set idle speed. If the throttle arm doesn't come back completely to the screw, then likely, the throttle trigger is jammed with sawdust/dirt that prevents the throttle arm from returning. Disassemble the trigger assembly making notes of part placement as you go. You will usually find a plug of sawdust in the trigger mechanism. Recheck the throttle arm motion after putting the trigger back together. You may have to advance the idle speed screw several turns CW to be able to keep the engine running when the throttle works correctly. Idle speed should be set so that the engine continues to run, but the chain doesn't try to turn. Hope this helps!

Jan 04, 2011 | Poulan Pro 42CC 2 Cycle Chainsaw, 18"

1 Answer

Chainsaw runs wide open


Operate the throttle trigger to see if it returns to the idle speed screw when the trigger is released. If it seems to 'float' somewhat, the trigger assembly may be full of dirt/sawdust, or the throttle return spring on the carburetor is damaged or disconnected. When taking the trigger assembly apart, be sure to make notes so that it can be put back together correctly. Make sure the throttle plate in the bore is tight to the shaft. When the carburetor was off of the engine, did the gaskets and heat insulator seem to be ok? Any air leak behind the carburetor will cause run-away speed. As for the engine quitting, check the fuel filter, air cleaner, and muffler for plugging. Check the condition of all of the fuel lines for decay or other damage. Did you check the condition of the diaphragm in the lower chamber of the carburetor--it should be quite flexible with no holes or cracks. With the jetting set where you have it, the engine should be 4-stroking heavily. Hope this helps!

Jul 20, 2010 | Poulan Pro Chain Saw 46cc 20"

1 Answer

Chainsaw runs full speed, will not idle.


Expose the carburetor so that you can observe the action of the throttle lever on the carburetor. The trigger should move the lever from the idle adjust screw to full throttle stop. If no movement observed, remove the trigger assembly from the front handle (make notes as you remove the pieces) and clean the area of sawdust/dirt accumulation. Recheck the action after everything is re-assembled before starting the engine. If the idle speed is still excessive, then turn the idle speed screw several turns CCW until the chain stops turning. Try wiggling the carburetor body to see if it has come loose from the engine. Hope some of this helps!

May 13, 2010 | Garden

2 Answers

Chainsaw dies out when gas is pressed to full throtle


Carb needs teardown and cleaning. May be a stuck float or clogged jet.
Spraycleaner just wont cut it.

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Apr 05, 2010 | Poulan Pro Chain Saw 46cc 20"

2 Answers

Trigger on poulan 3314 does not control speed. Saw runs at constant speed, somewhere above fast idle.


Open the cover over the air cleaner so that you can observe the action of the throttle cable and carburetor lever. Operate the throttle--normal action is lever wide open at full throttle and lever resting on idle stop screw when throttle released. If action is restricted, disassemble the handle where the throttle trigger is located and clean out the sawdust. Recheck throttle action. The throttle cable shouldn't require lubrication. Clean the air filter and check the operation of the engine. Hope this helps!

Jan 27, 2010 | Poulan Pro 16-Inch 38 cc Anti-Vibration...

2 Answers

Chainsaw reving full,not the idle screw or throttle cable


Remove the air cleaner assembly so that you can see the action of the throttle mechanism. If nothing around the carburetor throttle arm is broken or out of place (the return spring), then remove the screws in the throttle trigger part of the handle and look for sawdust blocking throttle trigger action. Hope this helps!

Jan 23, 2010 | Homelite Garden

1 Answer

Need carb h/l ajustemts and idle controle ajustment


This does take a little time to get it just right. Start at one full turn for the h and l. Work on the high first and after you get the H running work on the Low. They have to work together. So if you get it to idle and run at full throttle but it hesitates when you pull the trigger just adjust the low a little higher.

May 02, 2009 | Poulan Pro Chain Saw 46cc 20"

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