Author Topic: Flat Spot  (Read 1473 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
Triumph tiger 800
Aprilia Pegaso 650
Moto guzzi 1200 sport
Kawasaki ZXR400 J