SOHC.co.uk Forums > CB500/550

CB500K2 carb bit

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AshimotoK0:
The guy bought them in the end .. every day is a learning day ...thanks for the replies. Interesting that the 500 has a screw in bar retainer 'pin'  under the tiny peened-in steel cover but the 400 has one you have to drill out.

McCabe-Thiele (Ted):
My 500 did not have a screwed in retainer pin Ash I had to drill it out. The bearing at that end was partly missing as it had been dismantled previously.  I ended up with a replacement mounting unit from Ken that had a been later threaded and fitted with a one piece threaded pin.
So if I understand you correctly it's a two part arrangement on the 500 threaded with an end cap fitted on assembly to hold it at the right position!

AshimotoK0:

--- Quote from: McCabe-Thiele (Ted) on May 27, 2024, 09:39:42 AM ---My 500 did not have a screwed in retainer pin Ash I had to drill it out. The bearing at that end was partly missing as it had been dismantled previously.  I ended up with a replacement mounting unit from Ken that had a been later threaded and fitted with a one piece threaded pin.
So if I understand you correctly it's a two part arrangement on the 500 threaded with an end cap fitted on assembly to hold it at the right position!

--- End quote ---

As far as I can make out the retainer is a cheese headed M3 screw with a spring washer underneath. The end of the screw is machined to a slightly smaller diameter to engage in the groove in the chromed lifter bar and is just the correct length so that the screw doesn't 'bottom out' on the groove ...hence  the spindle is retained but still free to rotate. All new to me ..the 400F's I have owned just have a pressed in pin that's a bitch to drill out.

magpie114:
I’m just in the process of fitting one of Max’s stainless shafts on my CB350F carbs. Had to remove a screw as you describe (M3 on mine), will be refitting with dog point grub screw.


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