Author Topic: clutch repaired. problem better but still persisting.  (Read 3121 times)

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Offline MasterChief750

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Re: clutch repaired. problem better but still persisting.
« Reply #25 on: May 17, 2011, 11:27:49 AM »
Anyone?  Would like some guidance on this one.
1978 CB750 K - Project Red Headed Step Child
1976 CB750 K - Drag Bike
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I AM THE STIG
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KingCustomCycles.com

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Re: clutch repaired. problem better but still persisting.
« Reply #26 on: May 17, 2011, 01:37:34 PM »
Yes, a rich condition will cause decreased top end performance.  The solution will be smaller main jets if that is the problem.  Idle jet and needle position are out of the picture at full throttle.

Offline Don R

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Re: clutch repaired. problem better but still persisting.
« Reply #27 on: May 17, 2011, 03:01:08 PM »
I've had two tach's go bad. They work but read higher RPM than the engine is really turning. I didn't notice if anyone mentioned adjusting the screw on the throwout bearing. That was my problem and I totally overlooked it.
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Offline MCRider

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Re: clutch repaired. problem better but still persisting.
« Reply #28 on: May 17, 2011, 03:27:48 PM »
I've had two tach's go bad. They work but read higher RPM than the engine is really turning. I didn't notice if anyone mentioned adjusting the screw on the throwout bearing. That was my problem and I totally overlooked it.
Its just been assumed that MC750 has been adjusting the clutch correctly. The adjuster at the clutch is a good idea.

Loosen the cable completely. Loosen the lock nut on the adjuster on the clutch, behind the chrome cover. Back the screw out. Run it in till you feel resistance. Back it out a 1/4 turn, hold it while tightenin the lock nut.

Take out as much cable slop as possiible with the adjuster on the end of the cable that enters the clutch cover. Fine tune it with the adjuster at the lever.
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Offline MasterChief750

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Re: clutch repaired. problem better but still persisting.
« Reply #29 on: May 17, 2011, 06:35:49 PM »
hmm i assume i adjusting it right. ill double check it in the am. maybe im not backing off enuf. and i do suspect the tach. it bounces a lot. especially at higher rpm. maybe someone on the rally will let me borrow theirs for a sec. ill delve more into the rich condition as well. its not a lot rich but just a tiny bit. its richer at lesser throttle openings as itl bog at about 1/2 throttle. i have an electro tach one of the bench style that measures dwell and all that good stuff. if i hook it to only one coil i wonder if itll read correctly? its a sears brand and i think i hooked it up once but thought the readings were way off. maybe they werent. reflecting on it i really do suspect the tach.
« Last Edit: May 17, 2011, 06:40:42 PM by MasterChief750 »
1978 CB750 K - Project Red Headed Step Child
1976 CB750 K - Drag Bike
Some things i know, others i dont.
I AM THE STIG
Sam is THE STIG
he said i can be STIG3 tho