SOHC.co.uk Forums > CB350/400

Choke

(1/4) > >>

Oggers:
Folks

76 400/4 running and handling well. One minor issue - well hopefully minor. Choke lever on the nearside is connected to the (common) choke flaps by a length of bent rod with a collar and grub screw. The issue is that the choke flap spring works to pull the choke flaps closed. When the choke lever is actuated to the open position - fully forward and  normal running - there does not appear to be adequate sticktion - for want of better words - to hold the choke flaps open against the spring. What happens is the choke closes itself when the bike is ridden, and will not stay in the open position. Result is a rich running bike and 3000 rpm on tickover!  - unless I push the choke lever forward again.

As an aside- if I disconnect the rod from the choke flaps, the lever moves freely and fully forward

Am I missing something blindingly obvious here?   

Nurse Julie:
Have you got the little ball bearing in situ so the lever 'clicks' locked 🤔

Oggers:
It doesn't "click"  when lever is pushed forward into the open position, I assume it is supposed to?

Nurse Julie:

--- Quote from: Oggers on May 29, 2020, 07:43:23 PM ---It doesn't "click"  when lever is pushed forward into the open position, I assume it is supposed to?

--- End quote ---
Yes, when you push the lever into the down position (ie, when engine fully warmed up) there is a definite 'click' where the minute ball bearing locates and holds the lever in that position to stop it moving from vibration.

Nurse Julie:
It's part of #91 but the ball bearing and spring don't have part numbers 😁😁😁

The choke lever on no.1 carb has a very, very small ball held by a spring. The spring pushes the ball into an indent when the choke is off.

[ Guests cannot view attachments ]

Navigation

[0] Message Index

[#] Next page