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K1 start-up after carb rebuild, teething problems.....
Andrew-S:
Well, the K1 started up first prod after the carb rebuild, however when the choke leaver is down (fully open) then raised slightly it revs to about 3,000 rpm and when it's up (fully closed) it cuts out. I've checked the opening throttle cable and it doesn't appear too tight and the return cable is doing it's job. It will idle at 1,000 rpm at a little before the lever is fully up. I haven't adjusted the idle thumb screw yet so will look at all the linkages and idle setting tomorrow
In the meantime, any thoughts or suggestions gratefully received.
Video: https://youtu.be/KjWbOuseLOs
Thanks,
Andrew
McCabe-Thiele (Ted):
--- Quote from: Andrew-S on September 15, 2021, 09:20:50 PM ---Well, the K1 started up first prod after the carb rebuild, however when the choke leaver is down (fully open) then raised slightly it revs to about 3,000 rpm and when it's up (fully closed) it cuts out. I've checked the opening throttle cable and it doesn't appear too tight and the return cable is doing it's job. It will idle at 1,000 rpm at a little before the lever is fully up. I haven't adjusted the idle thumb screw yet so will look at all the linkages and idle setting tomorrow
In the meantime, any thoughts or suggestions gratefully received.
Video: https://youtu.be/KjWbOuseLOs
Thanks,
Andrew
--- End quote ---
What you describe sounds like when I first had my 400/4 running - in my case I had inverted the situation in my head. When I pushed the choke one way I thought it was "more on" when in fact it was the other way around if you get my drift. The increase in revs was the fast idle cam, normal running when warm was off. I convinced myself it would only run when the choke was partially on in reality when I looked at the carb flaps it was off. My choke markings on the lever were confusing to say the least.
I could be talking rubbish - just shared my findings.
Andrew-S:
Thanks Ted, I shared your frustration in thinking 'on' was 'off' and 'off' was 'on'...... :o
K2-K6:
The 750 has no lift of throttles when choke is used as it just drops guillotine type plates down into venturi on airbox side.
Throttle modulation is entirely on twist grip and rider control, usually you've got to juggle just rich enough to run with choke lever against how much you hold slides open until warm enough to run off choke. Choke lever down and flat against the carb body for fully open, no enrichment.
If you need someone else to come round and scratch heads in unison :) let me know as I'm not far and often going past near you.
Nigel.
Andrew-S:
--- Quote from: K2-K6 on September 17, 2021, 10:53:47 AM ---The 750 has no lift of throttles when choke is used as it just drops guillotine type plates down into venturi on airbox side.
Throttle modulation is entirely on twist grip and rider control, usually you've got to juggle just rich enough to run with choke lever against how much you hold slides open until warm enough to run off choke. Choke lever down and flat against the carb body for fully open, no enrichment.
If you need someone else to come round and scratch heads in unison :) let me know as I'm not far and often going past near you.
Nigel.
--- End quote ---
Hi Nigel,
I'm going to have another look over the weekend, but failing that a head scratching session in unison would be most welcomed, thank you. :)
Andrew
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