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Thread: chainsaw hard to start when hot
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18th September 2010, 05:09 PM #1SENIOR MEMBER
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chainsaw hard to start when hot
talking to a 2/st mechanic the other day and complainig how one of my saws started ok when i primed it [POURED FUEL DOWN CARBY] cold ,then 1/2 pull to restart all day ! then need to prime next day whats the problem? could be your fuel breather is clogged up he said . checked it and it was covered in dust and oil cleaned it and back to starting easy again !perhaps this is worth a look if your saw is hard to start as fuel is drawn back from the carby ! as the saw cools down .cheers Bob
Last edited by bobsreturn2003; 19th September 2010 at 03:56 PM. Reason: MISTAKE
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18th September 2010 05:09 PM # ADSGoogle Adsense Advertisement
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18th September 2010, 06:04 PM #2.
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30th September 2010, 07:44 AM #3SENIOR MEMBER
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update well cleaning the fuel vent stopped the fuel draining from the carby and it now starts with a couple of pulls with choke , the times i have had to remove the aircleaner and pour fuel in to prime . are finished hooray
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30th September 2010, 08:42 AM #4
Where is this vent... is it in the cap?
Cliff.
If you find a post of mine that is missing a pic that you'd like to see, let me know & I'll see if I can find a copy.
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30th September 2010, 10:36 AM #5.
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30th September 2010, 05:16 PM #6SENIOR MEMBER
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In my little echo 51cc is on a tube near the carby facing upwards , so it catches sawdust and chokes up , has a rubber non return valve in it . Now if i could find out why my chainsaw leaks oil , my happiness would be complete cheers bob
Last edited by bobsreturn2003; 30th September 2010 at 05:17 PM. Reason: spelling
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30th September 2010, 10:11 PM #7Cliff.
If you find a post of mine that is missing a pic that you'd like to see, let me know & I'll see if I can find a copy.
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2nd October 2010, 11:53 AM #8.
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Most saws leak oil because the oil tank vent valve is blocked or not working right. On some saws this valve is a small ally slug and can be removed by knocking it into the oil tank and then retrieving it from there. Sometimes they can be unblocked by soaking/washing in raw petrol and blowing out with a compressor but usually it's hard work fixing and a replacement is the easiest way to go as the only cost a few $.
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2nd October 2010, 07:21 PM #9SENIOR MEMBER
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yep its the echo again will hunt up that vent . sure makes a mess in the cab when it leaks . very nice little saw though . thanks Bobl have a stihl c/s and no id on it is there anyway to get an id on it? looks about 70- 80cc not an 066 but near the same size .any ideas cheers Bob
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2nd October 2010, 07:29 PM #10.
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Post a pic or look here. Chain Saw Collectors Corner - Gasoline Chain Saws by Manufacturer
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2nd October 2010, 07:56 PM #11Senior Member
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Matador
Hi Bob ,
My chain saw was only new and only used a few times and I had trouble starting it . I use 2 stroke boat oil in with the fuel and don't have any trouble starting the chain saw now . I even use it in my mower and whipper snipper and they start every time . I have a lot of friends that use it now . I hope that helps .
Regard Graham .
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2nd October 2010, 09:24 PM #12.
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Depending on what sort of air cooled engines you have, 2-stroke lube made for water cooled engines is not recommended for use in air cooled engines. It's probably OK in mowers and whipper snippers which have relatively little load on them but chain saws operate at high rpm under significant load and requires an oil that can offer the best protection possible and that is why there is special oils for such engines.
It's probably also OK on cheap small saws used for a bit of trimming and firewood but I would not use that lube on any sort of milling saw.
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4th October 2010, 01:18 PM #131st in Woodwork (1961)
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