Question about Garden

1 Answer

Chainsaw won't keep running except on full throttle?

I have a craftsman chainsaw that will start but only keeps running on full throttle. What would cause this?

Posted by on

  • 1 more comment 
  • table70 Oct 14, 2008

    I have Poulan 3416 it will not idle anymore looks like maybe a screw is missing. how do i find out?

  • Anonymous Mar 13, 2014

    replacement of a throttle cable on a 16 inch craftsman chainsaw

  • Anonymous Mar 26, 2014

    s310 chainsaw chain runs when not being used just idling



1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert who has written 50 answers of more than 400 characters.


    An expert whose answer gotĀ voted for 20 times.

  • Expert
  • 99 Answers

Running at full throttle but not at idle would probably be caused by not enough air getting through to the cylinder with the fuel. This could be caused by blocked/dirty air filter, air leak or worn/damaged piston or cylinder. The higher the revs are the less air to fuel ratio is needed so it will run at these speeds. First check your air filter, if that is fine take the spark plug out and examine the inside of the cylinder. You will need to check here with the piston down. If you want to be a bit more thorough you can remove the exhaust and check the piston face and inside the cylinder from here aswell. You don't want to see any scoring or solid lumps of anything in here. While you have the exhaust off give it a few firm taps to make sure there is no major carbon build up and clean the spark arrestor if it has one. The arrestor is normally a small gause found on or near the exaust outlet pipe. If that all seems fine then get some soapy water and squirt it around the carb gaskets and pipe that runs from the carb to the cylinder. If you see bubbles appearing here when the machine is running then you have air escaping and it will need investigating. Failing this you could have worn piston rings or crank seals. Ideally to test this area you need proper pressure testing equipment.

Posted on Oct 27, 2008


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya Repairman can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Repairman (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Chainsaw runs fine than goes full throttle all by its self and cannot shut it off with switch.

Kill switch is broken or disconnected. Throttle linkage is broken or disconnected or idle is set way too high.

Oct 26, 2013 | Craftsman 2.5 Turbo Chainsaw Throttle...

1 Answer

Starts with starting fluid runs for a few seconds then shuts down

Good test. Do not keep doing that.
Make a new and accurate gas/oil mixture. Empty and refill. Secure cap. Be sure to flood system during start attempt. Can you smell gas? Oops, too much, better wait 30 seconds for full evaporation.
Two little screws near carb. Both are actually needles and probably have a visible spring which keeps them from vibrating to a new position while in use. One fuel/air mixture at low idle (start). One fuel/air mixture at high RPM.
Try 1 1/2 full turns open from fully closed. Once to get it to idle roughly, adjust to a smooth idle. Do the same at full throttle. You will notice that the more you shut the full throttle down, the higher the RPM will go (assuming that it is near correct). Do not run it to lean. The mechanics of the motor needs the oil from the gas.
Smile always.

Jun 03, 2011 | Garden

1 Answer

210 2 stroke leaf blower it starts when choked and idles when choked but when i pull the throttle trigger it cuts off. I cleaned the air filter and replaced the plug.

hi mike. most likely problem is junk in the carburator. Get a can of starter fluid and an assistant. Remove the air filter. Start it up and before you pull the throttle have your assistant squirt the starter fluid into the air intake. Use more starter fluid as needed to keep it running for about 2 minutes to clear it. Joe

Apr 14, 2011 | Craftsman Garden

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

1 Answer

Won,t run full throttle

The problem could be a plugged fuel filter located inside the gas tank itself. Drain the gas. You can fish it out by using a hook of some sort. Then Replace with FRESH gas. If thats not the problem you have yourself a gummed up carb. Possibly from leaving fuel in it when out of season. Take apart the carb and spray with carb cleaner. Check all holes and screens on the top as well as the metering lever and diaphram on the bottom. They make model specific rebuild kit based on the model of the carb itself.

Sep 14, 2009 | Husqvarna , No.455 Rancher, 20" Gas -...

1 Answer

Need carberator settings for a sears craftsman chainsaw model#358.354831

You don't want to tighten them down just turn them in until the are just snug and then turn them out.
Start with the low at 2 full turns out and the high at about 1 full turn out. Start the saw and let it idle adjust the low idle to where it runs smooth. Adjust the high until the saw runs as much rpm as you can get at w.o.t. (Wide Open Throttle).

Jul 11, 2008 | Electrical Supplies

Not finding what you are looking for?
Garden Logo

Related Topics:

1,847 people viewed this question

Ask a Question

Usually answered in minutes!

Top Garden Experts

Dennis Key
Dennis Key

Level 3 Expert

2478 Answers


Level 3 Expert

641 Answers

john h

Level 3 Expert

12744 Answers

Are you a Garden Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides