Author Topic: CB400/4 CARB BOWL SCREWS / WASHERS  (Read 554 times)

Offline Nurse Julie

  • 1977 CB550/4 Mongrel Brat. 1974 UK 500/4 K1. Honda CD250u.
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CB400/4 CARB BOWL SCREWS / WASHERS
« on: November 27, 2019, 02:27:48 PM »
A Question to my 400/4 compatriots.
In the original parts book for our bikes, the float bowl screws are fitted without a spring washer. The CB500 carb bowl screws have a spring washer fitted. Is this an error in the 400/4 parts book or is it correct?. I sell the screws for the float bowls and carb tops for the 500 and 550 on my Ebay shop and I put the spring washers in the kit. I'm not sure whether to make a kit up of 10mm length screws for the bowls and not supply spring washers or 12mm length and supply the washers 🤔🤔🤔All the top cover screws on all 3 models have spring washers.
Thoughts please 😊😊😊
« Last Edit: November 27, 2019, 02:31:00 PM by Nurse Julie »
LINK TO MY EBAY PAGE. As many of you know already, I give 10% discount and do post at cost to forum members if you PM me direct.
https://www.ebay.co.uk/sch/julies9731/m.html?item=165142672569&rt=nc&_trksid=p2047675.m3561.l2562

LINK TO MY CB400/4 ENGINE STRIP / ASSESSMENT AND REBUILD...NOW COMPLETE
http://www.sohc.co.uk/index.php/topic,14049.msg112691/topicseen.html#new

Offline rosco

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Re: CB400/4 CARB BOWL SCREWS / WASHERS
« Reply #1 on: November 27, 2019, 03:00:17 PM »
All parts books I've seen list as 10mm  So assume no washer  Although think 12mm with washer should not cause a problem and may be even better   Ross

Offline Bryanj

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Re: CB400/4 CARB BOWL SCREWS / WASHERS
« Reply #2 on: November 27, 2019, 03:28:19 PM »
Never noticed Julie, why not ask gerben?

Offline Nurse Julie

  • 1977 CB550/4 Mongrel Brat. 1974 UK 500/4 K1. Honda CD250u.
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Re: CB400/4 CARB BOWL SCREWS / WASHERS
« Reply #3 on: November 27, 2019, 04:05:44 PM »
Thanks Ross and Bryan. I have contacted Gerben and he fits the 12mm screws with the spring washers.
He explained that the advantage using spring washers is you don't have to mount the screws using much force, because the spring washer will take care of it which makes total sense to me and too much force will ruin the threads of the carb housings as we know.
LINK TO MY EBAY PAGE. As many of you know already, I give 10% discount and do post at cost to forum members if you PM me direct.
https://www.ebay.co.uk/sch/julies9731/m.html?item=165142672569&rt=nc&_trksid=p2047675.m3561.l2562

LINK TO MY CB400/4 ENGINE STRIP / ASSESSMENT AND REBUILD...NOW COMPLETE
http://www.sohc.co.uk/index.php/topic,14049.msg112691/topicseen.html#new

 

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