Honda-SOHC
SOHC.co.uk Forums => CB500/550 => Topic started by: Harold 400/4 on August 26, 2025, 04:21:43 PM
-
Hi. Hoping for some help please.
My 550 K3 is leaking fuel from the carbs (the dreaded PD type 😎)
I have traced it to the metal fuel supply pipe between the carbs, and I think the O rings on each end have had it, and fuel is seeping out.
Nurse Julie has kindly supplied replacement O rings, thanks NJ.
My question relates to the screws on the choke flaps. Apologies if this has been covered before. I need to remove the choke flaps to separate the carbs, and the screws are peened if that the the right term??
I have found a Honda bulletin which says that when you put them back, you should use hex screws and a locking type washer which you bend up to stop the screws working loose and disappearing into the engine.
Has anyone done this, or has a source for the screws and lock washers?
Is there an alternative method?
Many thanks
Harold
-
On my 400F. I used stainless button socket caps. Drilled the end of the screw with a center drill by a few mm. Put them in with locktite and then hit the end of the screw with a center punch to expand the end bit so even if they worked loose they weren't on a one way trip into the engine. That was 20 years ago and they are still ok.
Regards
Dave
-
I’ve used stainless screws, slightly longer than standard, and spring washers with a dab of loctite.
-
Thanks guys.
Great to hear from you Ken!
All the best for a speedy recovery. 👍