And on the other burner... convert older 034 to adjustable oiler?

My other active project is an older 034 I picked up a week or so ago. It had suffered a clutch failure that took out the original oil pump. Our own BuckthornBonnie helped me out with a replacement pump, but it's adjustable whereas the original was not, and the crankcase isn't made for it. It looks like I'd end up having to grind a pretty big hole in the case to make room for the adjuster, which I am hesitant to do unless there's good reason for it. Does anyone have experience with the non-adjustable oiler on this model, i.e. how well it performs? Or, have you done the conversion and can you tell me how it worked out?

 

One of my 034s doesn't have the adjustable oiler. I don't use that one too much, but I know that the oiler does a fine job when everything is cleaned up and fit properly.
If needed, feel free to send that pump back or keep it ... up to you.
You could grind away on that case if you're up to it--- there's probably a chance of weakening that area, but I know it can be done.
I'm assuming the price of a new pump wouldn't be worth it, right?

 

Thanks, very kind offer but I may use it yet. I'm sure I could pick up a used non-adjustable pump on eBay without too much trouble, so the cost of new isn't really the issue.

AS has surprisingly little to say on the topic. The gist of it seems to be that the non-adjustable oiler is basically at full blast all the time, and the adjustable pump gives you the option to dial it down. I also saw comments worrying about weakening the case, but didn't see any accounts of cases cracking because of this. I'll stare at it for a while until one choice or the other makes sense to me.

 

Ok man, sounds good. Seems that you have a nice 4-hour ride tomorrow to ponder things like this... good luck!

 

Would be nice, but it's not possible. The crankcase casting is shaped a little differently, so the adjustable oiler won't fit without removing some magnesium.

 

Good point on the cases, Dex. I'd say grind away!
Ebay has what looks to be the non-adjustable for $22...

 

I put the adjustable pump in as close as I could get it and traced around the projection that gets in the way with a magic marker. The hole wouldn't have to be quite so large, but you get the idea:



The hole for the oiler might end up merging with that rectangular cored-through hole in the original casting, and the combined void might look big even if it doesn't compromise anything meaningful.

 

Ya convinced me. Easy access from below, full range of adjustment:

 

NICE JOB

 

Thank you very much. It's neat what you can do with a drill, a Dremel, a sharp burr and a couple of chainsaw files. The necessary opening is right up against a rib that you can sorta see in the pic taken from the bottom, but doesn't cut into it. I don't think it's a structural problem at all.

I just got the saw all back together, so I should be able to try it out later today.

 

Hey, I just realized that this is my first saw "mod." Everything else I've done has been aimed at restoring them to stock. Guess it's a special day.

 

Nice work.

 

Nice work Jon,
Now in your spare time , devise a way to make that OEM oiler adjustable.

 

My current understanding is that most 034's did have adjustable oilers, and it's only the earlier ones that don't. This one also has the rarer 2-part brake mechanism dust covers, and a side-access chain adjuster. And it stands out in one other respect...

 

Base gasket is present. I'm having a tough time seeing whether it's open or closed-port. Any tips on that? Can you tell by looking at the outside of the cylinder?