well... kept playing with it... removed muffler and cleaned the
screen...flushed the cylinder out and blew it all dry.. mixed new gas and
tried it... It will turn over now but won't start... still real good
compression.....checked for fire and it's a nice bright spark... so I'm
figuring an Ethanol destroyed carb/fuel line/filter.... Amazon has parts
coming Wednesday... that should fix everything I hope
thanks for all the suggestions.... don't know why I was thinking about
valves sticking... my old 4 stroke mind I guess...
john
-----Original Message-----
From: Steven Trovato
Sent: Monday, March 14, 2016 3:54 PM
To: shop-talk
Subject: Re: [Shop-talk] chainsaw problem
I'm with Randall on this. Whenever this has happened to me, it has
been a hydrolock like he said. I bet the carburetor is messed up and
it is allowing too much fuel to pour into the cylinder. Try
completely emptying the fuel from the saw. when you remove the plug,
tip it over and see if anything at all drips out. I'm betting that a
couple of repetitions of removing the plug and clearing the cylinder
will end the lockup, because it can't hydrolock without any
fluid. Then when you put fuel in, it will lock again, unless you fix
the carb. BTW, my experience is with 2-cycle engines with the oil
mixed in the gas. Emptying the tank means no fuel, no oil so no
hydrolock. If this is a 4-cycle engine, there might be some
differences I'm not familiar with.
-Steve T.
At 04:06 PM 3/14/2016, john niolon wrote:
>Randall...... tried it after reinstalling plug... same symptoms ... still
>won't pull out more than about 6"... it's not a 'hard' stop, it's really
>like it's hitting up against compression If I wait a couple of seconds and
>continue pulling it will go another 6" really strange
>
>Arvid.... no manual compression release on this saw... it might do it
>internally but it's not mentioned in the manual...
>
>john
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