1980 550LTD Clean Cafe Build

Could be shifter shaft (but you replaced that seal), or sprocket shaft, or clutch push-rod shaft, or the transmission cover plate gasket (which holds the other 3 seals. Replacing the gasket and 3 oil seals is not too hard to do, just takes time.

I supose it could also be the oil-pan gasket too, but it looks like the oil is coming from higher up (out of photo).

To really find what is leaking, remove the sprocket cover, take the chain off.
Hit the whole area with some engine degreaser and rinse off lightly with water.
Then run the bike on a center stand for a little while and see if the oil leak reveals itself.

Once again, not difficlut, but time consuming.

okay ill give that a try this weekend. Do you think it would be wise to just buy a whole engine gasket kit, and just replace all of that?

djplatinum50 wrote: okay ill give that a try this weekend. Do you think it would be wise to just buy a whole engine gasket kit, and just replace all of that?

Not sure.
I think it would be cheaper to get the seals separately, but I haven't looked into it.

Also, very carefully remove the clutch pushrod and make sure it's straight. There is a ball bearing at the other end which may or may not come out with the push rod, so make sure to catch it if it comes out.

okay yeah i think i will try and find the trans cover plate gasket and replace that first as that seems like where it may be coming from. Z1 should have those.
Thanks for all your help

Hey got a question for you, or actually just some general tips, advice. I raised my needle And the bike is running perfect from 1/4 throttle all the way to full. From Idle to 1/4 actually its more like 1/8th it has a little hesitation, as well as i am having some idling issues. Here is my question. when adjusting the air screw ( i know the starting point is 1 1/14 turns out) with pods and open exhaust (mac 4 into 1 without baffle) would my air screw more than likely be turned in more than normal or out more. When I start it for the first time (air screw 1 1/2 turns out) with choke on i get a little smoke out the exhaust which i think is excess fuel burning off, as well as a little gas coming out the exhaust. What do guys recommend? I still have to drill out my pilots (cant find a mini drill bit kit yet) but I cant figure out this air screw.

just a basic trouble shooting tool.

No eBay APP ID and/or Cert ID defined in Kunena configurationWith pods and a Mac, your air screws will need to be more like 1/2 turn out (rather than 1-1/2). After you get the pilots drilled to 34 or 37, you will be closer to 1 or 1-1/4.

But it sounds like there may be other issues if you're geting black smoke. Maybe the main is too big, or the throttle stop is set too far beyond 100% open, or maybe there is a float level or float valve issue. If anything it should have been pretty lean. I would expect you should be on the 3rd clip from the top on the needle.

This set will do the pilots and the mains up to 99.

Thanks a million guys im about to play with it some more. Its not black smoke, just a little white smoke when i first start. Ill update once i play with it a little. Also thanks for that link, i just placed the order

there is always a better way than drilling jets...

ultimate fighter wrote: there is always a better way than drilling jets...

Im all ears

Crickets chirping.

Hey Loud,
question whats your opinion on using a liquid gasket maker say on the transmission cover where I may have a small oil leak??