Well that's never hap't before...

[Yournamehere]

Got one of those chinese mt9999 saws for fishing club work - rotten logs fallen in the mud. railway sleepers, sort of stuff you don't want to put any thing else anywhere near. Cheap and useful.

Not been used for a while but stored dry.

Started and ran for a second and then would fire but only as I pulled it over and then didn't.

So I got on with something else.

 

Went back to it.

Pulled - backfired er frontfired out the zorst. I thought that's odd.

Pulled again - frontfired er backfired out the carb I thought * me that is odd and then again.

Then again and again and on the forth frontfire it all went tight as if semi seized. And is still tight with plug out and carb off.

Any ideas as to cause - out of interest - before I show it the bin?

[Yournamehere]

Update.

When I said cheap, I meant free, donated, and thers another for spares.

Long story but fire's roaring and , well, just look outside.

 

When I said any ideas I meant about how it could have happened - the seizing - as much as the mending.

 

I was thinking well the timing is out, but how can it be , it's fixed, unless the flywheel key is sheared, but if it was it wouldn't turn over on the pull it would just go bler.

 

Now I'm wondering could the flywheel key shear off and then jam?

That would splain it.

 

But what then would cause the seizure?

Edited February 11, 2017 by Yournamehere
edited to add missi g words cos cordless keyboard is a bit it

[Yournamehere]

Empty out the old fuel and put in fresh 2 stroke. Old fuel goes off. Also the oil could separate out if left stored for some time. If that has happened the saw could have started on fairly neat petrol and very little oil, hence it seized.

 

Ed

 

T'was stored dry and fresh fuel used although with hindsight a drop of oil down the plughole might have helped eh?

 

Heh! I did that once with an old mower that had been left standing for sometime, put some spray grease down the hole and let it for a week. Wound it over with a cordless drill.

UP she started and my- goodness! I've seen less smoke from a pile of wet leaves thrown on a bonfire. It just went on chugging and chugging and belching and belching, got 'er goin then, said my old mate looking at me over the top of his glasses.

Happy days

Yorn.

[Yournamehere]

Yay! Go me.

So I took the flywheel off and had a look and there was a little old key mangled and grey chuckling away.

 

Woodruff key was sheared and jambed jamned jammed.

Sometimes you just gotta go with your instincts; ignore the voice that's saying but it can't be that, and get on with it. It is. Sometimes.

 

Wound the crank backwards a bit and it stopped being 'seized' so still don't know what that was about. hey ho.

 

Happy days

Yourn