Author Topic: How do I remove these three screws on a '72 cb750 rotor?  (Read 1743 times)

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Offline slkern

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How do I remove these three screws on a '72 cb750 rotor?
« on: October 18, 2013, 08:54:06 PM »
Does anyone know how to remove these screws on a '72 CB750 rotor?  There's three of them and they seem to be clamped down along that line.  I'm trying to remove the starter clutch.

Thanks,
--Samuel K.
'72 CB750 K2

Offline Jerry Rxman Griffin aka MuthaF'er

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Re: How do I remove these three screws on a '72 cb750 rotor?
« Reply #1 on: October 18, 2013, 09:04:25 PM »
Drill out the staking and take an impact driver to the screws.
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline bryanj

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Re: How do I remove these three screws on a '72 cb750 rotor?
« Reply #2 on: October 18, 2013, 10:30:12 PM »
Plus when re-fitting use locktite and the impact screwdriver
Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

Remember "Its always in the last place you look" COURSE IT IS YOU STOP LOOKIN THEN!

Offline 754

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Re: How do I remove these three screws on a '72 cb750 rotor?
« Reply #3 on: October 19, 2013, 01:27:02 AM »
Drill them out, save yourself a lot of hassle....and broken impact bits
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline timbo750

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Re: How do I remove these three screws on a '72 cb750 rotor?
« Reply #4 on: October 19, 2013, 02:11:29 AM »
I am actually curious as to why you need to remove them, but I will be honest I don't relay know what that bit does. I have studied mine a bit and see what moves where, but I can't work out its purpose but haven't researched it yet either.

Offline kghost

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Re: How do I remove these three screws on a '72 cb750 rotor?
« Reply #5 on: October 19, 2013, 04:12:40 AM »
I think that's where the starter clutch rollers go........

So why do you want to take those out?
Stranger in a strange land

Offline slkern

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Re: How do I remove these three screws on a '72 cb750 rotor?
« Reply #6 on: October 19, 2013, 06:11:38 AM »
Thanks for all the replies. The reason for removing them is because I'd like to replace the rollers. I've had a difficult time trying to fit the new ones and I figured removing the starter clutch would make things easier. Am I wrong in believing this?
'72 CB750 K2

Offline 754

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Re: How do I remove these three screws on a '72 cb750 rotor?
« Reply #7 on: October 19, 2013, 08:09:04 AM »
The rollers should just push or fall out.
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline Jerry Rxman Griffin aka MuthaF'er

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Re: How do I remove these three screws on a '72 cb750 rotor?
« Reply #8 on: October 19, 2013, 08:16:00 AM »
If your rollers are having trouble grabbing or it might be intermittent, check the face of the surface they roll against on the gear. Mine was worn pretty badly and it wasn't really round/smooth anymore. I have 2 spares and used the best of the 3.

No real reason you should have to remove the clutch housing as Frank says. Keep playing with it, you'll figure it out.
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline bryanj

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Re: How do I remove these three screws on a '72 cb750 rotor?
« Reply #9 on: October 19, 2013, 09:22:12 AM »
The only reason to remove those screws is if they are loose, the springs, caps and roller should fit easily with the housing in place
Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

Remember "Its always in the last place you look" COURSE IT IS YOU STOP LOOKIN THEN!

Offline Jerry Rxman Griffin aka MuthaF'er

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Re: How do I remove these three screws on a '72 cb750 rotor?
« Reply #10 on: October 19, 2013, 09:36:06 AM »
The spring caps can seem to be difficult to load in place but they will go once you figure it out. Hold those in place then insert the roller.
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline 754

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Re: How do I remove these three screws on a '72 cb750 rotor?
« Reply #11 on: October 19, 2013, 09:51:12 AM »
I take them off to drill out weight for kick only bikes and the racer had the rotor external, the only way flat cover would fit is with the starter stuff off .
 If the rotor was off and got bumped hard the rollers may be harder to get out, and may not be working properly.. I suspect that may be you problem. Can probaly fix that without removing tin cover.
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline slkern

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Re: How do I remove these three screws on a '72 cb750 rotor?
« Reply #12 on: October 20, 2013, 11:52:50 PM »
Thanks, I appreciate all of your input! I got everything out and replaced without removing the housing.
'72 CB750 K2