Saturday, 4 March 2017

It's Alive!


Well, not at first :-)

Attempting to start had the bike kicking back, which according to the instructions is low voltage. The battery was checked, and with the headlight on full beam it was still showing 12.2V so that was OK.

The spark can be checked by disconnecting the stator, then shorting the black/yellow and black/white wires going to the black box. With the sparkplug out and resting against the head, it sparks every time you short the connection. So far, so good.

I moved the stator plate back to the position that the online PDF stated, and it started on the second kick. It wouldn't idle cleanly, revs were high, and only got higher when when releasing the air slide.

Since I'd not started the bike since putting the Amal on, I had an additional factor working against me. I checked the pilot screw, and found it was almost fully out. Pretty sure I had checked that when I put the carb on, obviously not. Screwed it all the way in, and back out 1.5 turns as a starting point, much happier, although the revs were still high.

The cable adjuster at the twist grip end had looked bodged when I put the carb on (I don't think it's the right one for either the Mikcarb nor the Amal - not even the right thread for the twist grip), and gave virtually no slack. I removed the adjusting ring which gave me about 5mm of adjustment to play with. This let me drop the idle down to something a bit more palatable, albeit not quite smooth yet.

And then the rain started.

Pretty sure that the timing will need a final tweak, and that the jetting/float height/needle height will need playing with, and the correct cable adjuster procured, but it's all back together now and running, and that makes Shaggy happy.

I'll figure out how to do a decent video one day.


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