024AV Stihl - Not oiling and need help identifying port

[Jack_Shaft]

Hello, working on a 024av for a friend. The oiler doesn't appear to be working and we are wondering if the oil reservoir is vented and/or air locked. We have had a good look at the oiler, seems good.

Can anybody tell me what this little alu port is? Is it a vent? We already checked and cleared the oiler port and brass tube.

Tks

 

[Frogfarmer]

That is the tank vent.

 

[Jack_Shaft]

Ok so we're not crazy. That's what we thought too. Does this clog and cause the oiler to stop working? Are there any known common causes for the oiling system to stop pumping?

I have some 026 pump spares kicking around, I think they fit the 024 as well

 

[Frogfarmer]

I've never had a problem with an oil tank vent. The intake screen can get clogged. Normally those oilers work well and pump plenty. If you have an 026 spare swap it out.

 

[craneguy1]

Have you pulled the clutch drum off and checked to see if the worm gear and spur are alright?

 

[SEAM]

The oil pump contains a guide pin that makes the plunger reciprocate while it is rotating. That pin easily gets lost when cleaning the pump...