Stihl chainsaw problem

[weirdfish]

Not sure if this is the right place to ask but here goes.
I have a Stihl ms170 chainsaw, it works fine for a tank or two of fuel and then it bogs down under load, fuel mixture is from the same can and I’m not cutting really big stuff either.
I’ve stripped it and cleaned as much as I can and it will work again for another tank or two and then lacks power under load.
I’ve ordered a plug and fuel & air filter, but any other suggestions as to what it might be.
The carb only has an idle adj screw on this model.

 

[serf]

Should have got a husky

 

[spin cycle]

typical stoohl

 

[CPF]

Just gave mine little saw a service today

I post good vid worth watching

 

[CPF]

 

[Derky]

Change the diaphragms and also the tank breather at same time.

 

[weirdfish]

I’ll let you know how I get on, just to add, there’s no mesh in the exhaust, would this make a difference?

 

[Lakesdigger]

typical stoohl

They call them a still cos it's the only thing they are good at

 

[bobk]

Jets need cleaning

 

[spin cycle]

They call them a still cos it's the only thing they are good at

had terrible trouble with mine.....been in two workshops.....it does run now but smokes more than i do .......anyhoo stoohl recommend 25/1 apart from if using their own oil which is 50/1.......being a conciencius type i bought stihl oil but also being a slapdash type used it at 25/1 so the paranoid in me thinks that maybe the smokey reason

 

[bobk]

had terrible trouble with mine.....been in two workshops.....it does run now but smokes more than i do .......anyhoo stoohl recommend 25/1 apart from if using their own oil which is 50/1.......being a conciencius type i bought stihl oil but also being a slapdash type used it at 25/1 so the paranoid in me thinks that maybe the smokey reason

You not revving it hard enough

 

[suffolksmallholder]

Don’t forget the pick-up filter on the fuel tank.
SS

 

[spin cycle]

You not revving it hard enough

story of my life

 

[weirdfish]

I’ve checked the fuel filter and it’s clean, but I’ve got a new one coming anyway

 

[organicguy]

Go to arbtalk forum, spudulike will sort it.

 

[Hay Maker]

Not sure if this is the right place to ask but here goes.
I have a Stihl ms170 chainsaw, it works fine for a tank or two of fuel and then it bogs down under load, fuel mixture is from the same can and I’m not cutting really big stuff either.
I’ve stripped it and cleaned as much as I can and it will work again for another tank or two and then lacks power under load.
I’ve ordered a plug and fuel & air filter, but any other suggestions as to what it might be.
The carb only has an idle adj screw on this model.

What fuel are you using?

 

[weirdfish]

Local co-op unleaded mixed with 2 stroke oil @ 100ml per 5 litres.

 

[bobk]

Local co-op unleaded mixed with 2 stroke oil @ 100ml per 5 litres.

E5 or E10 ?

 

[weirdfish]

 

[suffolksmallholder]

Run it on Aspen2. Sorted
SS