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Tool Talk Discussion Forum

Chainsaw Problem

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ACJ

06-05-2007 05:16:59




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I have an old Homelite Super XL auto that I hate
to part with. It really has low hour use and up to
recently was running excellent. It shuts off when
in use. I changed the fuel line and filter, the
spark plug (twice), cleaned the carb and air
filter and it still shuts off when in use. It was
starting right up again but then shutting right off. The fuel line was very poor and I thought I
had the problem but it wasn't it. Any ideas? It's
a good old saw that I like to use for heavy wood
cutting and I hate to lose an old friend. Thanks.

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tominnebr

06-06-2007 14:47:58




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 Re: Chainsaw Problem in reply to ACJ, 06-05-2007 05:16:59  
I was a Homelite dealer when the SXL"s were in their prime. Still have a lot of the old homelite parts/manuals if you need something.



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ACJ

06-05-2007 19:27:05




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 Re: Chainsaw Problem in reply to ACJ, 06-05-2007 05:16:59  
Thanks to everyone for all the ideas and tips. I
will start trying some of your ideas to see if I
can save my old friend. I have Stihl 036 and a
new Husky 346XP but I still like the old Homelite.



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Roy Suomi

06-05-2007 18:51:37




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 Re: Chainsaw Problem in reply to ACJ, 06-05-2007 05:16:59  
Under one of the covers , you will find a small "soft plug ", " freeze plug "..drill a tiny hole in the center of the soft plug and run a screw in the hole and pop the plug out..2 or 3 passages there...Also , you stated you cleaned out the carb...Did you change the diaphram that contacts the gas needle valve..If it's the least bit stiff , it won't pump gas in ....



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Catskill Pete

06-05-2007 15:17:20




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 Re: Chainsaw Problem in reply to ACJ, 06-05-2007 05:16:59  
Two possibles come to mind. 1. Check the ignition/toggle switch. 2. Some of the SXLs used four reed valves in a plastic holder between the carb and cyl. Check to see if one of the reed valves is hung up or broken.



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Turtle

06-05-2007 09:31:09




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 Re: Chainsaw Problem in reply to ACJ, 06-05-2007 05:16:59  
Check your exast and make sure its not plugged also.



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Johnny Jojack

06-05-2007 08:37:51




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 Re: Chainsaw Problem in reply to ACJ, 06-05-2007 05:16:59  
Don't the older units have a points type magneto?

It may need service including a condenser. (remember those?)



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Kendall

06-05-2007 07:44:59




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 Re: Chainsaw Problem in reply to ACJ, 06-05-2007 05:16:59  
I have same chainsaw and similar problem until I adjusted the carb. The needles seem to vibrate out of adjustment over time. Start with the low speed screw open 1 and 1/4 turn and the high speed screw open 1 turn. If it stumbles when you give it the gas, add another 1/8 turn on the low speed. At full throttle, tweek the high speed jet for best performance, then back off 1/8 turn. Your exact adjustments may vary, but this is a starting point.

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RustyFarmall

06-05-2007 07:03:38




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 Re: Chainsaw Problem in reply to ACJ, 06-05-2007 05:16:59  
Try a new fuel cap before you go much further. I'll bet the vent is plugged.



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cat236

06-05-2007 06:04:38




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 Re: Chainsaw Problem in reply to ACJ, 06-05-2007 05:16:59  
I am going to suggest you purcahse a carb oerhaul kit. You may have a small hole in diapragm. This will prevent fuel from being pumped into carb.does saw start adn idle and die or can you rev,then die.How did you adjust carb,usually to start lightly seat both H and L then turn out a turn and a half.This should allow saw to run.Where are you located?



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Badly Bent

06-05-2007 05:38:57




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 Re: Chainsaw Problem in reply to ACJ, 06-05-2007 05:16:59  
I recently had a similar problem with my Weedeater brand trimmer. I've had the trimmer since 1994 and it's run great. Had a problem with the fuel line (hole in the line) and replaced it with a new one. After replacing the line the trimmer would start briefly but would not rev, or would die shortly after starting. I finally took the carb apart and cleaned a small screen filter inside which had been blocked when the fuel line sucked in dirt through the hole. The trimmer started and ran perfectly after that. I used it for an hour afterwards and it never missed a beat.

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ACJ

06-05-2007 05:52:54




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 Re: Chainsaw Problem in reply to Badly Bent, 06-05-2007 05:38:57  
I took the carb apart after I replaced the fuel
line too and clean it out and shot air in all the
hole and jets. Saw no sign of dirt or blockage.
I also did not see any other screen or filter in
the carb itself but maybe I missed it. It has an
electronic ignition I believe, and parts are very
hard to get I am told by the lawnmower shop. I'm
not sure what could go wrong in that area. Thanks.

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