Hello folks,
Following on from my indicator post, as I had my multimeter out and the bike was difficult to start when not-cold, I measured the resistance of the source coils and pulser (the spec values coming from my Haynes manual):
Pulser: White/Red to Black - 12.1 Ohms (in spec compared to 12.4 Ohms)
Source coil 1: Brown to Black - 288 Ohms (out-of-spec compared to 420 Ohms)
Source coil 2: Red to Black - 12.4 Ohms (just in spec compared to 13.6 Ohms)
If you could help me once more as source coils are flipping expensive if you can find them:
> I think the 420 Ohm coil is Source Coil 1; the coil that sits next to the base plate. Is that right?
> I would imagine that a resistance of 288 Ohms vs 420 Ohms will not be helping with respect to my not-warm starting problem. But to avoid chasing shadows and unnecessary expense, is such a value likely to be a significant problem (I assume it must be otherwise Yamaha would have specified a larger tolerance)?
I have measure the ignition coil too, and that was OK.
As always, many thanks in advance for any advice.
Mike

 

Searching for spares, I found some photos that show source coil 1 with brown wire and source coil 2 with red wire. So I’m now sure of what needs to be replaced :-)