Chainsaw Repair
Husqvarna - Stihl - Poulan - Jonsered - Dolmar chainsaws and more => Stihl => Topic started by: Le Maisonniau on June 03, 2016, 02:06:18 pm
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Hi Guys,
I recently created a topic about my 390 not oiling the chain, I thought I had it fixed - but no.
The problem eventually turned out to be the feed pipe with a hole in it, hence the air bubbles I was concerned about mentioned in the topic.
However, I now have a much more serious problem, after obtaining a new pump and feed pipe, I disassembled the fly wheel etc to get at the old pump, I dont have the special Stihl locking thingy that goes down the spark plug hole so I used the method mentioned of pushing line into the plug hole until it locks - and yes it did, this appeared to work fine, it even kept it locked when I torque'd the flywheel back on again.
Then I had a problem getting the all of line back out of the hole, I pulled about 3-4 feet out and it locked up, I gave it a sharp tug and it 'snapped' I managed to find another end and pull more out till it stuck again, (I didnt think of turning the crank at that point !!!) I thought I had it all out so continued re-assembling the 390, then when I tried to start it, it seized up tight. So took out the plug and looked in the hole and saw a bit more line !! (about a half inch), I took off the flywheel and hand turned the crank, I believe !!! I now have all the line out as I can move the piston up and down at will, it pulls fine on the pull cord too - BUT it will not start :'(- I am wondering if I have damaged the decompressor or a valve -
Any suggestions
Cheers John
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did you check plug gap to make sure line did not close gap.
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:) Plug's OK, it wasn't in at the time. It is difficult with this m/c to check the spark too, I will see what I can cobble up to see if it is sparking.
cheers
But then again, the bit of line left in may have closed up the gap, so thanks, I'll check that. ::)
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;D Hi Guys, perhaps I was a bit premature here.
After about 100 pulls on the cord :o it coughed, spluttered, died, then next time coughed a bit longer, lots of smoke and then hey - ho, running - not as sweet as it used to :-\, then let it idle a bit, cranked it up and checked the oil at end of chain and woo-hoo oil flowing like a good-un.
Probably due to all the turning around etc etc that messed the fuel flow or pushed some debris some place!!
Happy bunny here now - I'll be giving it a good run out tomorrow as we are 'supposed' to be having a bit of summer.
Cheers guys.