80 kz750twin Oil filter screw stripped

realized this while trying to tune up ol' Frank. apprehensive to mess with it too much as this increases the damage to the screw. Any suggestions on remedying this mess would be appreciated. also, I could use a new oil filter screw if you might know where one might be... thank you guys

For a new one i would recommend Z1 enterprizes. As far as removing the stripped bolt when this happend to my z1 i went to home depot and got the damaged bolt remover, it looks like a socket but the sides are cut on an angle so it digs into the damaged bolt, then it came out very easly. But you wont be able to tighten it back up, so make sure you have the new one before you do it.

Are you talking about the small drain bolt/plug, or the large bolt that holds the cover on?

Is the head rounded off, or did you strip the threads?

Since both thread into aluminum, I'll be rather surprised if you stripped the threads on the bolt.

toof wrote:

realized this while trying to tune up ol' Frank. apprehensive to mess with it too much as this increases the damage to the screw. Any suggestions on remedying this mess would be appreciated. also, I could use a new oil filter screw if you might know where one might be... thank you guys

The bolt is steel and the pan is aluminum... guess which part gets most of the damage when that bolt is stripped? I doubt putting in a new bolt would be safe, I think you either need to thread up to a larger size bolt o install some kind of insert. I would drop the pan and fix it right if it was mine. Dropping the pan isn't that hard to do and it gives you a chance to clean off the inch layer of slimy crud that you will find in the bottom of the pan.

I beleive it is just the head that has been rounded. have yet to see the bolt. it is not the drain plug but the intake

Here's the Kawasaki.com diagram for reference.

[click on image for larger view]



From reading the posts, am thinking the large #23 main bolt is the problem (not the small #19 filter drain screw). But am wondering whether it's simply that the bolt head is rounded off. Or the bolt fails to tighten inside the case and just spins around.

If it's just the head rounded off, use a file and make it a hex again.

I had the same problem on my 1000. Picked up a set of these and they worked slick!

Vter bob that is what i was talking about those are awsome and work very well i cant tell you how many rusted or reonded bolts they have helped me get off.

the diagram is not the correct schematic. on mine there is a sheild wwith two screws over whatever is underneath them

toof wrote:

the diagram is not the correct schematic. on mine there is a sheild wwith two screws over whatever is underneath them

The earlier diagram is a 1980 KZ750 twin LTD oil filter as shown on the kawasaki.com site.

The following diagram shows the case covers.
Anything look familar?

[click on image to enlarge view]



As Cool Hand Luke might say, "What we have here is a failure to communicate." :laugh:

Good Luck!

toof wrote:

the diagram is not the correct schematic. on mine there is a sheild wwith two screws over whatever is underneath them

The shield with two screws covers the adjustment screw for the clutch release assembly.