[fuzzybutt]

i have a 74 cb750k and the clutch wont disengage all the way. with the clutch pulled all the way in i put it in gear and the bike dies. once in gear, i cant get neutral without shutting it off as the clutch drags so badly. any ideas? the cable is ok, the clutch is adjusted properly too. plates arent stuck together either.

some people are like slinkies, basically useless but they still make me smile when i push them down the stairs

 

[oldschoolorange]

If you are sure the plates aren't sticking maby it has something to do with your clutch push rod possibly being bent? I think Geeto is the guy to talk to about the honda 750's

Hey someone pas me the wrench........ Ahh screw it where is the torch

 

[Geeto67]

how long has it been since you last ran the bike. Usually when the clutch drags it is the plates sticking together. Is it a stock clutch or a barnett? have you run it before with no problems or did you just install it?

There are two adjustment points on the clutch, one at the handlebar lever and the other at the base of the engine where it connects to the pivot. Us the adjustment at the engine to make big changes and the adjustment at the handlebar for fine tuning.

The one thing I can think of is that when you installed you didn't torque the springs down properly and now it is binding as it disengages. You also could have warped the basket or cracked it but how that happened I have no idea.

need way more info than you are providing to be helpful.



Edited by - geeto67 on Jun 01 2007 8:06:25 PM

 

[fuzzybutt]

this is the clutch i was using, i just removed it to dress the steels and basket with some sand paper. if i adjust the clutch out far enough to disengage it wont grab either. this is the stock plates with purple heavy duty springs. i'm going to completely remove the clutch and inspect everything and also be sure i have it all together correctly.

some people are like slinkies, basically useless but they still make me smile when i push them down the stairs

 

[Geeto67]

did you rub a little oil on it when it went back together? cb750s use a wet clutch so it doesn't hurt to rub a little motor oil on the steels with your finger when re assembling it. It kinda helps the new sanded fibers reseat when you pull it in and out.

 

[fuzzybutt]

i actually soaked em in new 20/50 honda motorcycle oil. the one and only change i made is i used the basket and pressure plate from a 750f i cant imagine this would change things that much though, though i've been messing with the sohc hondas for a few years now i wouldnt claim to know everything about em.

some people are like slinkies, basically useless but they still make me smile when i push them down the stairs

 

[Geeto67]

I don't claim to know as much as everybody says I do either...but owning the same cb750 for the last 10 years I should know something.

I am pretty sure the F bike clutch basket is different from the 74 K bike basket. I know the 78 F basket is different to compensate for the harder factory clutch springs. I think the 76 K bike got the same basket as the F bikes but I don't know off the top of my head if they use different steels and fibers as well.

 

[ProTeal55]

A buddies bike would do this only after riding for 5-10 min. Would be riding along then it would be hard/impossibile to shift. He would adjust the clutch cable (at the lever) and the problem would be fixed. The next day he would take it out for a ride and 10 min later the same thing would happen. He never figured out (sold the bike)..

ProTeal55
Member: Ton-Up Club Chicago
1972 CB750 Hooligan/Street Fighter -4 SALE !
1974 CB/CL450 Cafe/Bar/Stripclub Racer - 4 SALE !
1955 Chevrolet Bel-Air Hardtop

 

[jbranson]

Those people in the Netherlands...there's something wrong with them. Must be the windmills or the wooden shoes or something, but they are always rocking the boat.

....oh...sorry....I thought this thread was "Dutch won't disengage"

Nevermind,
JohnnyB

 

[fuzzybutt]

i'm going to switch the baskets back out when i get back from vacation thursday or friday
that basket is the only thing i changed though i thought they were the same.

Political correctness

A doctrine fostered by a delusional, illogical, liberal minority, and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end.

 

[imslow]

JB, that as the funniest thiing I've hjear in a long tjime! I kneaded that.

 

[jbranson]

Dutch men are always trying to stick their finger in a ****...which everyone knows is very difficult.

Actually, I love the Dutch....cause they run the world.

JohnnyB

 

[fuzzybutt]

well i found ONE problem, i forgot the large flat washer that goes under the pressure plate, the one with the teeth in the center to fit over the splined shaft. the problem has improved but it's still doing it. i have these different parts in the bike. basket from a 76' 750k in the 76' motor and the plates and discs from i think an f model. i measured several different sets of plates/steels and they all measure ti within a tenth of a millimeter or so. i have the factory manual too and i'm not finding anything else there. i wint give up but this IS starting to get frustrating.

Political correctness

A doctrine fostered by a delusional, illogical, liberal minority, and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end.

 

[pampadori]

throwing this out there...
maybe the cable stretching? buy new cable, and all new disc and plates. if that doesn't fix it, trade her in on a hondamatic.

 

[fuzzybutt]

i'm off to the dealer to order a new cable



Political correctness

A doctrine fostered by a delusional, illogical, liberal minority, and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end.


Edited by - fuzzybutt on Jun 13 2007 11:46:35 AM

 

[fuzzybutt]

well the cable was all crappy when i pulled it off, it wasnt the problem but still now i have a new clutch cable. i ended up pulling the entire clutch assembly from the cover to the basket off of a 750f i have and all is well now. when i have more time i'll inspect the other clutch and see just what the problem was but for now, my bike is back on the road and shifting better than ever, hell i went on a 100 mile ride this afternoon.