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Homelite 10540 chainsaw 35CC chainsaw won't start when hot

I have a Homelite Model 10540 35CC chainsaw; it starts fine when cold, but won't start when hot. Why.

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Go to: http://www.drystacked com for a 12 page article on Walbro carburetor theory and troubleshooting. Check particularly, the position of the gasket in the lower chamber. Check the spark plug for blue, snappy spark when the engine is hot. If ok, place a small amount of fuel mix in the cylinder and try for start. If it pops several times, look to the fuel system. Check the fuel filter, air filter, and muffler for plugging. Does the primer bulb fill with fuel after several pumps? Check the fuel lines for decay or other damage. When the engine is hot, try not using the choke, but set the fast idle. Hope some of this helps!

Posted on Jul 14, 2010

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Posted on Jan 02, 2017

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Homelite xl chainsaw won't start. I took out spark plug, put in some fuel and if fired right up. But won't run.


You need to clean out the carb. possibly replace the Needle Valve and check the Diaphram for stiffness. Also check the fuel line for cracks and rott.

Feb 10, 2013 | Homelite Garden

1 Answer

Went to start my XL500 homelite chainsaw and the rope won't pull out.It worked fine when I ran it dry for storage, now it seems like th sprocket won't turn. looks like chain oil is comming out


If it is bar oil then the gasket is leaking between the oil tank and the crankcase, this would mean a full strip down and replace the gasket.

Feb 10, 2013 | Garden

1 Answer

Homelite chain saw won't start


Not the way u want to but i have had luck heating the engine withheat gun. try hair dryer if u dont have a heat gun. Or pull plug out and clean lightly with emery clothe or ~400 grit paper. clean plug before reinserting

Jun 06, 2012 | Homelite Garden

1 Answer

Homelite 35cc won't start after 10 minutes use


it could be needing fuel, or the spark plug needs replaced . or carb needs cleaned out , theres lots of different things that can cause it which makes maybe a simple problem hard to answer without more details. sorry

Jun 04, 2012 | Homelite Garden

1 Answer

Homelite UT10540 chainsaw was cutting fine..cutting thru a 6" stump of Yew, started to labor, backed off gunned it back and resumed cutting...same thing but engine stopped. Noticed it was smoking a...


Hi and welcome to FixYa, I am Kelly. This sounds as if the engine leaned out big time. You may have a hole in the piston. Perform a compression test looking for 110 PSIG minimum. There is a bit of a compresion release due to the design of the cyliner head so you will not see full compression on a compression test. Your compression should be 110 PSI or above. There is the possibility you also have a fuel supply problem that caused the engine to run lean. This could be from debris in the carb or a hole in the carb diaphragm(s). I know this is a 35cc engine and has a 14" bar unless you changed it to a 16" bar.

Parts:
http://www.ereplacementparts.com/homelite-ut10540-35cc-chain-saw-parts-c-18807_21362_127279.html

The piston is in detail D but appears to NOT be available. (no release date)

This engine takes carb repair kit H142-42 (Ruiing) The kit is under $6.00.
My real concern here is that you added fuel to the cylinder and did not get a momentary start (new plug too). That is why I think you may have a hole in the piston from running lean. (Compression test is a must) If you do not have a compression tester... fit a paint brush handle (form it) so that it does not penetrate any deeper than the electrode of the spark plug into the cylinder but make it a tight fit. When you pull the recoil do it with conviction. It should pop the paint brush about 10 feet if you had it TIGHT in the spark plug hole. Also use a flash light and do what you can to inspect for about a 1/4" hole in the piston. (Won't be easy to see the whole pistion head)

Thanks for choosing FixYa,
Kelly

Sep 23, 2011 | Garden

1 Answer

I would like to know where I can buy or order an inlet manifold boot for Homelite 330 Chainsaw. I am having difficulty finding this part.


hi photobil

pauly46 here

here is web site for parts

http://www.odref.com/homelite/chainsaw/ut-10540.pdf
go to page 9

part ref # 26 number 93838b boot connector

save a copy of this file

here is another web site
http://store.chainsawr.com/collections/homelite-1?page=11

he has had them but o/s at present but order 1 anyway

check out www.chainsawr.com , go to parts by brand homelite ,

cheers hope it helps

pauly46

May 29, 2011 | Homelite Zama Rb3 Carb Kit 330 Chainsaw...

2 Answers

I just bought a homelite 35cc Model # UT10544 chain saw. It was returned and it had no user manual or guide. where can I obtain one for free? Thank you Glenn


oneflgator-

The manual for this chainsaw is available at Homelite's website at: Link. The manual will be in PDF format and can be printed or saved to your computer.

Hope this helps.

DIYpro

Apr 30, 2011 | Homelite Garden

1 Answer

When hot won't start


Cylinder gasket opening up or blown
rebuid or replace gasket check for severe scorch in cylinder bore
only when hot is your clue expansion leak pressure Boom dies out

hard to pull is expansion of piston

Jun 16, 2010 | Homelite FactoryReconditioned ZR10522...

1 Answer

Runs well untill it gets hot. then cuts out


If it's the little xl model, it's probably the ignition coil breaking down when it gets hot and therefore it can't and won't be able to handle a load. Also, scarred pistons skirt or rings could also be some of the problem here. Make sure your mix for a Homelite saw is 40:1 not 50:1 like most saws are. Homelite seems to run better with a heavier oil mixture. Good luck.

Aug 02, 2009 | Garden

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