Stihl 011 oil pump question

[stihlgotwood]

Is the oil pump on the 011 the same as 009? and How does the oil pump actually work on these saws?

Thanks for the info

 

[rxe]

Yes, they're the same. As far as I remember they are just a diaphragm that is pushed by crankcase pressure fluctuations. Pretty simple, mine stopped oiling a while ago: I just rinsed the bits in petrol to get rid of the dirt and it worked again.

 

[stihlgotwood]

The 011 is actually my buddies saw and he put a new diaphram in but it still wont oil. Any thoughts on what it could be?

 

[Lakeside53]

The pump inlet is blocked.... after a few decades, the sponge filter disintergrates and gets sucked into the pump.

Also, check your gaskets -any leaks in the upper gasket and it wont pump.

 

[RiverRat2]

+1

The pump inlet is blocked.... after a few decades, the sponge filter disintergrates and gets sucked into the pump.

Also, check your gaskets -any leaks in the upper gasket and it wont pump.

Yep!!!!!

 

[stihlgotwood]

It doesn't sound like there is a blockage in the pump,but i will look into it. So what if the pump is ok-whats the next step.

 

[Fish]

after a few decades, the sponge filter disintergrates and gets sucked into the pump.

Typical Stihl quality........................................................

 

[Lakeside53]

It doesn't sound like there is a blockage in the pump,but i will look into it. So what if the pump is ok-whats the next step.

lolol.... there isn't much else...

Take out the pump. Locate the hole that connects to the crankcase (not the oil outlet), put a dab in grease over it and crank. If you have impulse pressure (you will..), the grease will be sucked in.