Stihl MS361 Woes

[Treerover]

Does it stop dead after 3mins or slowly get shitter and die?

Mr Pierce you claim first prize !!
Many thanks. £7 later paid into the Chinese economy and I now have a fully flying saw again . Thank you [emoji1317]

[Treerover]

Thank you to everyone for your help with this, I’ve learned a few things along the way and your help has meant I now have a fully working saw again.
Cracking stuff ?

[Stubby]

41 minutes ago, Treerover said:

Thank you to everyone for your help with this, I’ve learned a few things along the way and your help has meant I now have a fully working saw again.
Cracking stuff ?

Nice one ! . Glad its sorted .

[billpierce]

Yep pleased its sorted

[Treerover]

Why do I bother!!!!
I had a MS460 once do exactly as yours, 5 mins and pop, it would stop and not start. The coil gap was just enough to spark when cold. When the coil warmed up, it would stop working. I adjusted the gap and bingo, still running 3 years later!
I did Bills 361 and found it had a dodgy coil that would work fine and the saw would idle well but it wouldn't rev past 7.5K and was like it was rev limited. I changed the coil and it worked fine.....until the new coil failed recently!

Do you ever feel like your saws are just trying to piss you off and lull you into a false sense of security???
Coil replaced (with chinese one as mentioned), saw ran like a beaut for 20 mins and then won't fire.
Next day after warm milk and exiting the fetal position I camed down and repeated the process only for the same thing to happen.
Not vacuuming,
I re-spaced the coil a little further (like 3 folds of thickish paper) but nowt.
This will teach me to triumphantly post mechanical victory gloats of accomplishment without trying the little funker........I'm off for a rose petal bath and some Andean pipe music before I cut off my ear and start painting irises

[Treerover]

Not likely but could be low compression . Once up to temp the clearances open to the point it wont support combustion . Did you do a compression check ? 

I wouldn't know how to do one without specialist equipment unfortunately

[Treerover]

Yep pleased its sorted

I spoke too soon.......[emoji17]

[spudulike]

Are we saying that the Chinese coil has bitten the dust? You are more likely to get a spark with a smaller gap but it is probably toast - that is why they cost so little Send it back to the supplier if it is faulty.

[spudulike]

If you have a spark with the saw in its cold and hot state, Try pulling the air filter cover off, look between the air filter back plate and the cylinder on the clutch side and make sure the breather hasn't become disconnected from either end.

These machines are a bit rare but have seen this on a couple of them.

Symptoms would be a fast idle, screaming a bit at the top end and a tendency to die on opening the throttle.

Not what you have but worth a look at...unless that coil has popped!

[wyk]

I had a saw do something similar. Turned out it had a very small nick in the wiring that would only ground when it got wet, or the saw vibrated enough to push it against the chassis. Very annoying.