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When chain saw is starte it goes to full throttle.

When chain saw is started you must start it with choke full out. Once saw startes it goes to full throttle when choke is pushed in. Also it will not idle. Saw is only two years old with very little use. I took the carb apart and cleaned it , that didn't help. My next step was to check the price of a new carb. Any thoughts !!!! Ron

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You understand there is a fast idle start position? If your saw is new it is triggered when the choke is pulled and remians in this position (even when choke pushed in) until the throttle is advanced once. Read your warm start instructions, it says pull clutch, push clutch, start. This is why we should buy saws from a chainsaw seller/mechanic NOT Home Depot!!!
I made the mistake ONCE of attempting to start mine without the fast idle engaged... my shoulder aches just thinking about it. GL
Lou

Posted on Sep 14, 2009

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This sounds like there could be a linkage problem. From memory on my saw the choke retracts when the throttle is pulled and there is a little linkage that works between them. If this is all operating fine the next step is to adjust the carbie and make sure the settings are correct. You will have a H high screw and a L low screw. Screw both all the way in and then out 1 1/4 turns. With the engine warm fine tune the high revs setting but turning it 1/8 of a turn at a time with the engine revving high. When that is about right do the same with the low setting this time with the engine idling. Then check the high setting again and adjust if necessary. The two screws affect each other a little so find a balance. If

Posted on Sep 13, 2009

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1 Answer

Stihl saw problems it won't start and flood fuel in to the air filter why is this ?


There are several conditions and situations that this can occur, but let's try the most common. This is also for any STIHL saw that was manufactured before 2014, after that, the M-Tronic saws have a different starting method.
Normally this happens when the engine fired and it was not audible, and the rope has continued to be pulled with the choke on.
This method is approved, but EXTREME caution should be used, and the CHAIN BRAKE must be used.
CAUTION: Do NOT use the drop start method, this is not an approved starting method under any circumstance!
1) Place the saw on the ground that is clear of debris.
2) Set the Chain Brake
b) place the toe of your right shoe thru the rear handle,
c) support the saw top handle with your left hand,
d) pull the recoil with your right hand.
3) Make sure the choke is NOT applied, place the master control lever in the start position (one notch above the choke position)
NOTE: at this point, it helps if a second person can hold the throttle at the full or wide open position.
4) Make 6 rapid pulls (a few more may be required), you should hear the saw start to sputter, keep the throttle open until enough rpm is obtained that YOU the Operator can gain control of the throttle (the other person stands aside now in a safe position) and remove the chain brake. Keep the throttle open until the saw starts to run properly.
*NOTE 2: The chain brake is designed to not only stop the chain in case of 'kick back', but also is to be used in starting the saw until you have time to gain full operational control of the saw. However, extended rpms above clutch engagement can damage the brake band, overheat the drum bearing, damage the clutch shoes and clutch drum.

Feb 25, 2017 | Stihl Garden

1 Answer

Hard starting no fuel primer noise


Hi Jack:
You don't mention make or model so all I can do is relate 50 years of personal experience.
None of the chain saws that I have owned have had a fuel primer.
This has been (and continues to be for my Husky 266) my start routine. Current saws don't have compression release.
- prep includes fill fuel and oil tanks, check chain sharp and tension, bar tip lube.
- Ignition switch on
- Choke full on
- Throttle full and lock set.
- Pull starter cord *(266 takes 3 pulls, Homelite took 6) until engine fires. If I'm fast I can get the choke off before it dies, otherwise
- Choke off, Pull starter cord. Engine should start with 1 or 2 pulls.
Hope this helps.

Jan 08, 2016 | Garden

1 Answer

Thanks but my new model 450 doesn't have a blue choke like the others I have owned. This has a sngle lever and goes up to start and down to kill. I push it up, prime it,decompress and pull. It hits...


The start procedure is done on one red lever, as you say prime till the bulb is 3/4 full, push deco vave in, pull the red lever out against the spring and right up, this engages choke and part throttle, pull until it fires once, push red lever down to dissengae choke, then pull again until it starts, flick the throttle trigger to release the part throttle and bring the engine to idle,if all is correct it should start within three to four pulls, if not it needs tuning on the carb screws.

May 19, 2011 | Husqvarna 450 e-series 18" Chain Saw

1 Answer

Have new 450 and is very difficult to start. Lost or didn't get book. How do I start it and re-start it while still warm??


Start procedure is, push the primer as many times as it takes to 3/4 fill the bulb ( you cannot over prime it ) pull the blue choke lever fully out,place the saw on the ground with your right boot through the back handle, crank the engine until it fires once, do not continue to crank the engine with the choke out ( they will not run on choke, only fire ) push the choke fully home, crank the engine until it starts, blip the throttle trigger to bring the saw to idle, warm engine, pull the choke fully out and push in again without cranking engine, this will engage the part throttle, crank the engine until it starts, blip the throttle to bring the engine to idle.

May 18, 2011 | Husqvarna 450 e-series 18" Chain Saw

1 Answer

The choke on a Poulan Chain Saw that I just bought will not stay out to start it.


There are two types of choke systems, the basic choke has a ball and spring in the carb body which locks the choke either in or out, the other type is connected to the half throttle position, once pulled out it stays out, however if you lift the throttle trigger it will go back in on its own, queation, are you holding the throttle trigger whilst trying to start it, if so this is why it will not stay out, if this is not the case, pull the choke out with a little more force, it may be just not coming out enought to lock.

Feb 28, 2011 | Poulan Pro Chain Saw 46cc 20"

2 Answers

I have difficulty starting my Gardenline 49.3cc chainsaw. Please let me know what the correct starting proceedure is.


Genral starting procedure on a chain saw is as follows, put fresh fuel into the fuel tank, top up the chain oil tank,switch the ignition on, if the saw has a half throttle position on the trigger lock this, if the saw has a primer depress this as many times as it takes to 3/4 fill the bulb, pull the choke fully out, if it has a deco valve push this in, now place the saw on the ground with the chain brake on and crank the engine ( always have the saw body between you and the cutter bar,NO left hand starting, NO drop starting ) the engine will only fire once on full choke, do not continue to crank engine after the first fire or you will flood the engine, push the choke back in, crank the engine until it fires up and runs,release the chain brake and blip the throttle to release the half throttle device.

Jan 22, 2011 | Garden

1 Answer

How to start a Husqvarna 445?


Set choke to full on. To do this depress throttle all the way down and set choke lever to on. Pull starter rapidly until saw fires . Once it has fired set to start and pull starter cord until it starts. If it doesn't start in ten - twelve pulls,reset choke for two or three pulls,then switch back to start. Pull starter cord until it starts. When it starts it wii be at full R.P.Ms. Let run for twenty to thirty seconds. then move switch to run. Hope his helps, Thanks

Nov 18, 2010 | Husqvarna 16" Chainsaw Chain Saw Bar...

2 Answers

Could I please have the basic start procudure for the poulan 2375 Borrowed from a friend. won't completely turn over


1) Have fuel tank full of a mixture of 50:1 gasoline and 2 cylce oil.

2) Have bar chain oil tank full.

3) Push down choke to full

4) Pull over engine 2 times.

5) Push choke off

6) Pull over engine. If it does not start you may have flooded engine ect.
Please let me know.

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2 Answers

Starts and then runs wide open.


SOUNDS LIKE THROTTLE NEEDLE STUCK OPEN CHECK THROTTLE LINKAGE STICKING OR RETURN SPRING

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1 Answer

Can't rememeber what fuel or oil it needs and how to start it


Start with a 40-1 mixture this should not hurt engine for a long time if you are just a casual user. The oil in the chain reservoir is chainsaw bar oil and I usually top off each time I refill the fuel. To start Turn on switch, close choke, hold throttle to open position, You may need to place saw on the ground hold down with foot in the handle while pulling cord. Once it tries to start place choke in mid position and try to start again. Once it is running place choke in full open position.

Apr 11, 2009 | McCulloch Garden

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