Stihl MS391 suddenly lost power.

[spudulike]

There is on my McCulloch.......or there was before I removed it!!

[Moose McAlpine]

Just now, Khriss said:

Couldnt find his arse if you superglued his fingers to it.  K

 

Couldn't tell his arse from a hole in the ground. 😂

[Moose McAlpine]

Just now, spudulike said:

There is on my McCulloch.......or there was before I removed it!!

 

Is it one of those ooooold skool ones?

 

I've seen a few 2-strokes with separate jugs and heads, but 2-strokes are definitely not my area.

[Khriss]

1 minute ago, spudulike said:

There is on my McCulloch.......or there was before I removed it!!

The big one ?  Probly so you could decoke it every month 😉 K

[spudulike]

It sort of makes you wonder what the thought process was? Perhaps some experience of other equipment??

The Yanks call them jugs for a reason! Just means something else this side of the pond.

[spudulike]

Just now, Khriss said:

The big one ?  Probly so you could decoke it every month 😉 K

Well it isn't one of those ones from B&Q😉 Yup, the 80cc one and is curiously difficult to pull over now! It was just a plate of aluminium about 1.5mm thick.

[peatff]

MS391 suddenly lost power, unlike the one my mate had that never had any power 🤪

[Moose McAlpine]

9 minutes ago, spudulike said:

It sort of makes you wonder what the thought process was? Perhaps some experience of other equipment??

The Yanks call them jugs for a reason! Just means something else this side of the pond.

 

Maybe all manufactured by someone setup for casting lots of air-cooled 4-strokes? Or if it's a plated bore maybe something to do with the machining and plating of the bore. Simpler to machine a through tube than a closed one?

[Khriss]

19 minutes ago, spudulike said:

Well it isn't one of those ones from B&Q😉 Yup, the 80cc one and is curiously difficult to pull over now! It was just a plate of aluminium about 1.5mm thick.

Thats the Jessy plate mate!  Lowers compression  😉 make sure ye have yr 3 weetabix tomorrow !  K

[spudulike]

It bloody well kills me starting it, no wonder they put a valve in the carb you remove to prime it! It is a big ol lump by anyones standards!