372xp won’t start.

[Craigb]

Crank side seal gone.

[spudulike]

I thought it had passed a pressure/vacuum test after the clutch side seal was replaced or did you cock up the fitting? The one on the flywheel side is generally, pretty reliable.

Is it leaking badly as most of the time, small leaks....where you lose pressure or vacuum over a couple of minutes, don't really interfere with running...but, they DO need repairing as it will get worse and slightly old fuel or a carb set slightly lean may cause the saw to go pop.

[Craigb]

It did. I must have cocked it up. It was absolutely pissing out of the bushing not the seal. But the seal looked prolapsed. I did it without the o ring and smeared the crank with hylomar. I’ve ordered an o ring. I put the seal in the bushing and then knocked the seal in flush. I bollocksed it then I must have.

Edited August 15, 2023 by Craigb

[spudulike]

Possibly knocked the spring out on fitting.

[lurch_918]

On 25/07/2023 at 21:39, Craigb said:

It’s a good feeling taking a saw to bits that doesn’t run and putting it back together and hey presto. 

my version " It’s a good feeling taking a saw to bits that doesn’t run and putting it back together and hey presto. it still don't run "

[Craigb]

39 minutes ago, lurch_918 said:

my version " It’s a good feeling taking a saw to bits that doesn’t run and putting it back together and hey presto. it still don't run "

I’ll get it.

[spudulike]

I think they call it learning. Some try and give up but other more tenacious types don't give up and keep going and learn for the next time, getting better all the time.

[Craigb]

Are the oilers serviceable? I notice the back side of my plastic pinion was burred up and also it wasn’t engaging with the drum. I’ve bent the arm on the pinion up so it now meshes with the drum. Is the oil pump chewing the pinion up. Everything is in place, the o ring the metal bush and the steel washer on the crank.

 

[spudulike]

Something isn't right if that is the case, perhaps the pinion has worn so the arms are sitting below the rim of the drum but something sounds to be out.

I have only seen arms missing the drum on machines with significantly worn clutch bearings typically 261s and 362 Stihls.

[Craigb]

How much play should the drum have as in in and out not slop from the bearing? I can push and pull the drum a bit on the shaft. Should the cir clip snug everything down?