Question about Clutch for KZ750

Hey guys, ive been riding my 1980 kz750 E1 for a little now and been having issues with the clutch. im about to buy a Barnett clutch because i cant find a OEM clutch.
at this point im pretty convinced that the clutch is glazed or just bad since it slips at high rpm.

I adjusted the clutch cable and adjusted the mechanism that pushes the push rod that moves the clutch, not sure what else to check, what is weird is that when i put first gear on i get this little kick from the bike like the clutch is not fully depressed. yet it slips up top as well which might be normal? i dont know.

anyways i read all sorts of review about Barnett clutches not sure what to think but i cant find a good OEM clutch.

I don't know what bike you have. Help us out a little. Do you have real manual?
Most of the early bikes used the same clutch

It's possible you're adjusting the clutch incorrectly --- some manuals are ambiguous about which way to do the adjustment.

Sorry i edited the post i forgot that little detail. its a 1980 kz750 E1 . yeah i have the clymer manual for the Four cyl 750s

i might be. i followed my manual but it still wont feel great. im gona give it another shot tomorrow.

Are you using Motorcycle oil ......... could be your problem if not and Partzilla sells nos clutch plates amoung others...... replace the springs too but wait on buying till you let us know the oil your using.and am sure on the adjustment.

KZ2B yes i am using motorcycle oil forget what brand but I'm sure its got the friction additives and all that good stuff.
already tried changing the springs with Barnett springs, it was 14 bucks for the springs so it was worth a shot, still didn't change, plates looked good when i did the springs, but didn't really examine them.

Partzilla has the friction plates, not the plates in between. is there a big difference between OEM and Barnett? what do you guys recommend

OEM

+1 OEM

matigipler wrote: i might be. i followed my (clymer) manual but it still wont feel great. im gona give it another shot tomorrow.

Some manuals are ambiguous as to which direction you're supposed to turn the clutch release adjusting screw. The owner's manual probably has the correct procedure. On some 80s models, you're supposed to turn it counterclockwise first until hard to turn, then clockwise 1/4 turn. It's kinda counter-intuitive. That's how it's done on my 81 650-CSR. ---- the 750-E1 may be the same. ???

Scroll down & click "The Bible" link. .... mbsween.bike-night KZ750L3 page
Note: not applicable to the 750E, but some of the wiring diagrams are mislabeled in the links.
The 1981 Ltd is an H2, the 82 is an H3, & the 83 is an H4. .... search tags mbsween KZ750L3.

matigipler wrote: KZ2B yes i am using motorcycle oil forget what brand but I'm sure its got the friction additives and all that good stuff.

Welcome. Oil is very critical to KZ clutch performance being that the same oil that goes through the engine also flows through the "wet clutch". I'm almost certain this holds true for your 750.

We have talked oil on this forum many times and it's really "JA-MA" certified motorcycle oil that should be used. Modern oils mostly made for cars (and some motorcycles) have friction modifiers and low emissions modifiers for catalytic converters, etc, etc, It's actually the modifiers that can cause a KZ clutch to slip. But it will not happen in 10 or 100 miles after and oil change (it could I guess), may take a long ride or more miles for the initial slip to start happening. I'd like to know what type of oil you have in there just to be sure.

How many miles are on your bike?