SOHC.co.uk Forums > CB500/550
cb550K3 carbs
nairb:
Well I finally bought myself a mini ratchet and found I could get the outside float bowls off. In the end I took the whole set of carbs off again. Did my best to check the float hight and clean the float valve hole. Rechecked the pilot jets were clear. Put all back together and did a static fuel test - sitting under the fuel tank for hours. No leaks.
So put the carbs back on the bike... Tank on - no leaks. Bike started and did run better but still needs carbs setting up better.
Then the rh carb starts dripping.... and only stops with the tank fuel tap set to off. No amount of "tapping" the carb would stop it dripping either.
These carbs really are a pain..... Other than that this old 550K3 is almost ready for its mot, then get it changed to "historic vehicle"
Nurse Julie:
You don't need an MOT to register it as Historic, its not needed for the paperwork process, nor is insurance unless you live in Northern Ireland . Then when it's registered as Historic, you still don't need an MOT, it is personal choice whether you do or not. Can't help you with the incontinent carb though 😢😢😢
Bryanj:
Yes a broken/missing O ring will cause problems, there is a newish post on the US site where somebody is fitting new adjuster screws and i asked nicely if he would measure the O rings before fitting
nairb:
--- Quote from: Nurse Julie on October 01, 2020, 08:54:30 PM ---You don't need an MOT to register it as Historic,
--- End quote ---
Yup thats true.....but the post office says it must be on a SORN to be able to change its historic status at tax time. Well this old 550k3 was on the road some 26/27 year ago and the sorn thing dident exist then. So its in limbo. No good phoning the dvla to have it put on a sorn either. No sir we cannot do that.
So the plan is :- to tax it for 6 months at the post office, then sorn it before the start of the next month. Then go back to the post office and change its status to "historic". It will cost one month of tax.
Its best to check with the insurance company to see what their attitude to NO mot is. I always tend to have an mot.
Anyway........ back to these dripping carbs. I should have taken the floats off and put them in a large jar of petrol and see if they still "float" after a couple of hours.
Nurse Julie:
All insurance companies are fine with the no MOT law on Historic, as long as the bike is maintained to a safe and roadworthy condition at all times. I still have all my Historics MOT'd, but that's because I like collecting pieces of paper for the bikes history file 😁😁😁
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