Homelite Chain Saw has hard time accelerating and will not cut wood

Hi,

I have a Homelite UT10947 chain saw (from Home Depot)
Its a 33 CC motor, maybe 5-10 years old.

Was cutting great with it, and ran out of fuel ( i think), I filled it up and it would not accelerate well, and did not have the power to cut wood.

It has progressed into a point where it sometimes can't accelerate up to any where near full speed.

So far,
I have torn down the motor, and replaced the seals as it was (is ) spitting a good deal of fuel mist back.
I have replaced the piston ring (I broke it), the cylinder does not have a single scratch in it.
I have put on a NEW carb, not just a rebuild kit.
and I have put a new plug in it.

The fuel flows out of the fuel line just fine while its off the carb, the primer bulb line is also fine.

I am at the end of my rope, the saw is not that old and frankly I expect more from it.

PLEASE HELP, otherwise it's going in the fire.

Thanks

 

Take the chain and bar off it and see if it runs to full speed.

 

Thanks for the reply,
Yep tried that a while ago, while I had it all apart.
Chain can be moved easily by hand anyways.

Thanks

 

What did you find out when you tried to run it without the chain and bar on it? Did the engine act the same?

 

From what I remember it did.
You could hear that it was not up to speed, if it did get there.
I can take the bar off it again in the AM.

It must be a fuel issue, but I don't know how it can't be getting fuel.

Thanks

 

Have you tried backing out the high speed mixture screw a little? It's the one of two that is closest to the air filter end of the carb.

 

I have parts available for this saw.
Cylinder, piston, crank. one piece,
Carb,
Exhaust,
Recoil start,
Handle assy,
Anything other than the body, which somehow broke.

I seemed to have a fuel issue with the saw, it was not carb related, but rather a delivery problem to the carb.
Either the breather was not breathing, or the pulse signal was not getting to the carb.

After 2 homelites in a number of years, this will be my last.
They seemed to be made in China, and there is little support.

So, I was thinking of a Stihl, any feedback on that ?

Thanks

 

If you like comparisons.....Best Chainsaw Reviews ? New Chain Saw Test - Popular Mechanics

Be sure and read the comments as well.

Everyone that I knew that worked trees either had Stihls (felling and cutting up) or Echos (limbing and trimming). Many folks recommend a light duty commercial unit over a heavy duty homeowners model.

Best thing you can do is go to a small local shop (or 2 or 3) that sells the brands you may want and ask what do they sell to Pro's. Also may want to check rentals stores..not to buy..but to see what brands they have.

 

Spend the extra money and get the Stihl. If you want to put it in perspective think about how many $40.00 you've spent monkeying around with a cheap one.

The review that will mean the most is the one that says "This saw is still cutting."

Forget Poulan. The Pro line is the best they have, but they have junked that entire product line for "who knows why". Poulan used to be one of the best, but no more - and I have a pile of parts to prove it.

 

It sounds like something that happened to my Homelite model. I had to remove the chain brake, and it worked great afterwards. (And slow down the idle speed, so the chain wouldn't move at idle).

 

Have you checked the exhaust on your Homelite to see if it's plugged with carbon? You seem to have verified fuel is getting in, maybe exhaust ain't getting out? The mufflers do fill with carbon after a while, especially if run a little bit rich.

 

After I tore apart the chain brake assembly and ran the saw without the chain brake, it accelerated the way it should. Is there a part that can be added to the brake assembly that would release the brake farther to allow the chain to turn, and then allow the saw to accelerate? I know I can use the saw without the brake, but for safety's sake, I would rather have it available. The brake wasn't there on my first saw, but that was "back in the day."

 

Nothing like that around. Out of the box the brake has all the parts it needs to work properly and you're better off with than without them.

Sometimes those things get bent up when they hang on the drive during disassembly. Check to make sure that isn't the issue.

Or if it has that much drag something may be corroded or gummed up. Try using a solvent on it like carb cleaner out of an aerosol can, then put a drop of penetrating oil on the moving parts.