Author Topic: cs2240s wont start  (Read 1307 times)

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Offline aclarke

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Re: cs2240s wont start
« Reply #20 on: November 04, 2015, 04:46:09 pm »
80 is very low granted your gage is accurate

Offline trigger07

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Re: cs2240s wont start
« Reply #21 on: November 04, 2015, 05:57:16 pm »
it must be stuck as its very clean hardly any carbon build up but then it hasnt done anything realy

Offline trigger07

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Re: cs2240s wont start
« Reply #22 on: December 05, 2015, 12:36:41 pm »
hi just to update the thread after stripping the motor it turns out the piston ring was stuck i have now ordered a new one and wait to rebuild the motor i found the ring stuck with carbon but no carbon elswhere would there be a reason for this on such a new machine

Offline Cut4fun .

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Re: jonsered 2240
« Reply #23 on: December 05, 2015, 01:15:46 pm »
What was the oil mix you were using? Also how old was your mix?  How rich is your saw set at? 
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Offline sharkey

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Re: cs2240s wont start
« Reply #24 on: December 05, 2015, 08:12:42 pm »
Sounds like it got hot.  Gasoline nowadays goes bad really fast.  As the fuel degrades it stops burning and begins to combust.  It may help to run a little more oil in your fuel mix.  Also, try to keep the chain razor sharp so that the saw feeds by itself, reefing on the bar or forcing the unit to cut will push the heat up quick. 

Offline trigger07

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Re: cs2240s wont start
« Reply #25 on: December 06, 2015, 04:56:06 am »
hi thanks for the info i will put back together and take note of your recomendations many thanks

Offline trigger07

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Re: cs2240s wont start
« Reply #26 on: December 08, 2015, 03:29:39 pm »
the mix was 50/1 and was no more than 2 months old the mixture screw hasnt been touched and only has one screw unlike my other 2 stroke machines there doesnt seem to be any high and low adjustment unless i am missing something so can only guess the one screw is tickover

Offline Cut4fun .

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Re: cs2240s wont start
« Reply #27 on: December 08, 2015, 03:37:06 pm »
Just wondering what you use for oil?
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Re: cs2240s wont start
« Reply #28 on: December 08, 2015, 07:40:59 pm »
the mix was 50/1 and was no more than 2 months old the mixture screw hasnt been touched and only has one screw unlike my other 2 stroke machines there doesnt seem to be any high and low adjustment unless i am missing something so can only guess the one screw is tickover

I know that the manufactures recommend 50-1 mix but that is because of EPA standards that have to be met.
I would run at least 40-1.   I myself run 32-1 mix in everything I have including saws, string trimmers, and leaf blowers.   I have never had any problems with stuck rings, scoring on the piston, or bearings going bad because of a lack of oil.
PP 505, 475, 445.

Offline trigger07

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Re: cs2240s wont start
« Reply #29 on: February 07, 2016, 09:10:18 am »
hi after stripping and fitting a new piston ring it now fires up every pull and ticks over nice but for some reason as soon as you pull the throttle it dies but fires up straight away i have managed at one point to get it to rev through but mostley it just wants to die on me any ideas what i might look at thanks to you all who helped

 

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