Ryobi PCN 4040 not oiling

[Willard]

Hi, I have inherited a Ryobi PCN 4040 two stroke chain saw. The saw starts OK, but there is no oil to the cutter bar. I have removed the bar and checked no chip blockage, there is plenty of fresh oil in the tank, I suspect that the oil pump is not working . Am I right to say that to get to the oil pump I need to take the bottom off the saw? From the diagrams it appears to be deep inside the crankcase. Are spares available? thanks in advance

[Richard Thompson]

I'm not sure about that exact model but most saws I have changed the oil pump on require that the clutch is removed to gain access, which means that the side is stripped out rather than the bottom.

If I remember correctly the only two saws that had bottom access were the Stihl ms250 and a cheap best green one but that was a few years ago??

Post up any pics and we could possibly help a little bit more

[spudulike]

These Ryobis use a nylon oil pump gear that wears until it stops, it is usually mounted on the engine and is only accessible by taking the whole engine out.

 

It is a right old PITA TBH, did one once and flogged it on ebay for £50....what a life:001_rolleyes:

 

Good luck with it!

[Willard]

Hi, thanks for the replies, as requested I have enclosed pictures, and I think you're right- the gear is plastic and sits inside the recess where the shaft emerges from the casing..

[spudulike]

Get a light and magnifier on it and I reckon you will se a concave recess on the gear where the pinion has worn it!

 

You will have to strip it and fit a new part.....or flog it on ebay:001_rolleyes:

[MsPro79]

On 24/08/2016 at 23:47, spudulike said:

These Ryobis use a nylon oil pump gear that wears until it stops, it is usually mounted on the engine and is only accessible by taking the whole engine out.

 

It is a right old PITA TBH, did one once and flogged it on ebay for £50....what a life:001_.rolleyes:

 

Good luck with it!

My friend has a similar problem. I will help him with this issue. thanks for your help.