Starter chain oiler damage

Got my generator pulled, thanks for the tip Franz and the nice post by Tabaka. My oil leak was coming from the chain oiler rather than the shaft seal. Unfortunately my oiler pin is well worn by the chain. So what am I facing here? New chain, new guide, splitting the case? I guess better to find it now before I put the motor back in.

82 XJ750J

 

You need to split the cases and replace the guide, starter clutch rollers and springs and new starter clutch bolts. Heat the two bolts holding the old guide before you slacken them to soften the factory thread locker. I changed mine. @Jetfixer has lots of photos from when he split the cases on his machines. @Mezzmo video on his build which shows the assembly process below.

 

@cds1984 thread here.

https://xjbikes.com/forums/threads/xj750-engine-removal-and-split-pictures.38545/

 

Thanks, Franz. Not really what I wanted to hear, but I guess that's the way it goes. This chain/oiler pin wear sounds like its one of those chronic problems with the XJs? Is the root cause wear on the chain guide, or stretching of the chain itself? Or does it start with problems in the starter clutch? Thanks for the help.

 

The guide breaks up with age and the chain can then hit the oil spray nozzle. It's the guides that cause the problem, if that remains in one piece the nozzle should not get damaged. Once you start it's not really a difficult job, especially when you already have the engine out of the frame.

 

Yep doesn't look like an awful job. My workbench is covered with an exploded 454 right now so I didn't want to do another teardown, BUT this is why I bought an antique bike also.

Just curious, you mention replace the rollers and springs in the starter clutch. Is that another problem area? Or just because I'll be into it this far it would be silly not to change them?
'

 

The cost of the parts is minimal in comparison with the time and inconvenience of them failing in the future. That's why l always liked a kickstarter too. The hub on the starter clutch can crack on the XJ's then the rollers won't get trapped to spin the crankshaft. Inspect all parts on the starter clutch and use threadlocker on the new bolts. Yes better to change them, that's what l did. If the hub is in good condition re-use it.

 

Yes the oil spray nozzle is marked but you can use it again I think. If the metal is strong where the chain was rubbing on it it's reusable just replace the o ring.

 

If you want pictures or advise on the starter clutch IM me I've done two and assisted another member via phone with his XJ900. I destroyed my oil nozzle on the first engine broke the tab off , Xj4ever to the rescue. I lucked out both engines the chain guides were in good condition and did not have to replace them.

 

No oil spray nozzle better replacing it.

 

Thanks for the help, guys. I'll probably have to sit on this one for a bit till I clear some space to work. I did pull the nozzle out of my spare motor and it looks fine, so I've got parts to swap. Just need to get the guide and related gadgetry.

The alignment pin was broke on both, and I'm pretty sure I didn't break it pulling the nozzle, but maybe because it's ridiculously delicate. So I'll have to drill that out and replace with some drill rod or something. In the meantime I'll read some more posts on the teardown and come back for more help when I get to that point. Thanks.

 

You can use a fine roll pin to repair the oil spray nozzle.