Author Topic: cb400f kick start pivot cracked  (Read 688 times)

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Offline awrawr

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cb400f kick start pivot cracked
« on: September 10, 2018, 01:20:47 PM »
I have two of these and they are both cracked. I assume this is a common fault but I cannot find any replacement parts for sale anywhere and a lasting repair seems unlikely, given the small size of the piece of metal that is broken, right at the point of maximum stress.

Has anybody solve this problem? Or know a source of replacements?


Offline robvangulik

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Re: cb400f kick start pivot cracked
« Reply #1 on: September 10, 2018, 03:15:00 PM »
It is common alright, i welded it and grinded it in the right shape some 10 years ago and been OK since, i must say i hardly ever use it, it mostly starts electric first push on the button.

Offline MoMo

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Re: cb400f kick start pivot cracked
« Reply #2 on: September 10, 2018, 10:33:35 PM »
I've had 8 400 fours and none had a kick start problem.  Is the lever cracked?....Larry

Offline awrawr

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Re: cb400f kick start pivot cracked
« Reply #3 on: September 11, 2018, 12:17:22 AM »
See pic. I blame the crack on abuse arising from frequent dirty winter weather, salty roads, damp electrics and consequent difficulty starting. If all else fails I will try the weld since I do not anticipate using the bike in poor weather and should be able to rely on the starter button with electronic ignition, better maintained electrics and dry-running only.

I was surprised after-market replacements are so hard to find.does anyone know of an alternative model with a matching part? There's several look-alikes but difficult to judge diameters and angles from pictures.

Offline robvangulik

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Re: cb400f kick start pivot cracked
« Reply #4 on: September 11, 2018, 02:34:51 AM »
Here is my welded kicker..

Offline jakec

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Re: cb400f kick start pivot cracked
« Reply #5 on: September 11, 2018, 09:06:10 AM »
My roommate's 400F has a totally incorrect kickstart lever, a small one like for a small twin. I always wondered why this would be the case but maybe his was broken in the past.
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Offline awrawr

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Re: cb400f kick start pivot cracked
« Reply #6 on: September 11, 2018, 09:25:17 AM »
Maybe it's just God's way of telling me to lose weight and keep my timing and carbs properly adjusted............

Offline Bodi

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Re: cb400f kick start pivot cracked
« Reply #7 on: September 11, 2018, 09:35:26 AM »
I believe this is just a weak point. Mine cracked, I rooted through several huge bins of kickstart levers (hundreds of them) at two local bike wreckers and did not find any 400F ones or any others that would work. I had it welded two or three years ago, and this year it's cracking open again. I will try and have it welded again but rely on electric start for cold starts now - this is when a lot of kicks would be required, I always kicked it over for this to save battery charge.

Offline carnivorous chicken

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Re: cb400f kick start pivot cracked
« Reply #8 on: September 11, 2018, 10:28:32 AM »
Pretty sure I've got a kicker if you need one...

Offline calj737

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Re: cb400f kick start pivot cracked
« Reply #9 on: September 11, 2018, 11:57:21 AM »
I will try and have it welded again...
The trick to welding this part is an adequate preheat, and a slow cooling. If whomever is welding it just fires up, lays a bead, and then tosses the part aside, it will crack after stressing it. It's cast steel and needs proper treatment to remain strong.
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