Author Topic: Flat Spot  (Read 505 times)

Offline wheelysteve

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Flat Spot
« on: April 04, 2017, 10:10:43 PM »
Hi, I'm a newbie on here so go easy!! I currently have 4 old Zeds but would like to add a CB750 to my collection.

I have been offered a 1975 CB750K4 which was apparently restored some time ago by John Wyatt. It's in very nice condition but has a large flat spot at just below 3000rpm to about 4000rpm. Either side of this , it runs nicely. Ive left it with the seller to try to sort this.
My question is , is this likely to be something simple in the carb settings or could it be caused by a serious issue?

Another question.....this bike has Takasago  rims (same as my old Zeds). Are these normal fitment as I thought CB's came with DID rims ?

Any other advice gratefully received as my knowledge of the 750 is limited.

Cheers Steve

Offline Green1

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Re: Flat Spot
« Reply #1 on: April 04, 2017, 10:24:20 PM »
D.I.D as standard My bike developed a flat spot at about 3500rpm
HT leads caused it the first time.
Second time the points needed a clean
Current bikes
Honda CB750k1 Valley Green Metallic
Honda CB750k1 Candy Gold
Honda CB550k Candy Jade Green
Honda CG125
Aprilia Pegaso 650
Moto guzzi 1200 sport
Kawasaki EX650R (Mine until dave pays for it)
Kawasaki ZXR400 J

 

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