Stihl ms170

[rookery]

Problems with chain oil not getting through. Is there an adjustment somewhere hidden on this machine? A little comes through with the bar of but not with the bar on. Comments please

[spudulike]

Nope, no adjustment on these machines. Best remove the pump as it is either worn or probably plugged with fine wood chip particles!

[rookery]

Ok thanks spud is this a hard job or do I need to send it away

[spudulike]

That all depends on your ability. Here is a similar job done on a MS250, best make sure the oiler pinion is OK and the arm on it hasn't had its end worn off or is loose on the plastic pinion once the clutch is off and before you remove the pump. 

You can try a bit of watering down the oil with diesel/spirit before this but in my experience, it is easier just to do the full job.

Fill your boots: -

 

[rookery]

Thanks mr spudulike,
I have followed the video but when I took the caps of the handle there aren’t any screws inside. What is holding it on? Thanks

[rookery]

Actually just watched another video and you just force the handle of from the mounts. So thanks for your help, the rest seems pretty straight forward
Thankyou

[spudulike]

It is rare when I do these machines as they are relatively low cost so don't get to do them too often. The oil pump is like the ones in the pole saw attachments and do those more regularly. 

Just follow it through - when you pull the pump out, make a note of the positioning of the oil channels on the pump and make sure it is pushed back in with the channels in the same position otherwise you will block the oilways.

Good luck 

[rookery]

Thanks