Stihl 041FB oil pump washer question

[elittle]

I have an oil pump washer, part # 1110 on this saw. It doesn't sit on the crank perfectly, there is a small gap. The hole in the washer is bigger around than the circumference of the crank so it rattles. When the saw is running it sounds like a cowbell lol.

Is there a different part number for some of these farm bosses? I only see the 1110 part number.

There is also 2 holes on the crank seal area for a pin to go into. Is there a washer with 2 pins on it?

Thanks for any info.

 

[Bob95065]

Are you asking about the crankshaft seal?

FYI there's a second seal in the oil pump gear that could leak. Best to check the saw with a vacuum test pump before you run it.

You only need one pin, it will engage the rim sprocket.

 

[elittle]

OK, thanks. I just started getting interested in chainsaws so sorry if my questions are stupid. There are variations of these old saws so I want to make sure it have the right parts. I just got a clutch drum/sprocket that said 041fb and it's too shallow, so I ask before I buy more stuff I don't need.

 

[Bob95065]

I see what you meant by the washer - the big metal washer with the hole. It shouldn't make noise when you tighten everything down. Like I said using a hand vacuum pump make sure there are no leaks. That saw is around 40 years old and those rubber seals may have dried out and will leak. Check the fuel lines and impulse line too.

When all this started I had 2 saws I used to cut firewood to heat my house. I had 2 saws and I had no idea why I would ever need another chainsaw. I found this board and contracted a very serious condition we call CAD - Chainsaw Acquisition Disorder. 10 years ago I built a shed to store more saws; now I need more space.

You are starting down a very slippery slope. The good news is you are in good company here.