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adrian58:
Typical, the first dry and reasonably warm day to show off my CB750 K2 at the local cafe' meet and it won't start. In the end I flattened the battery and cooked the solenoid. However when I went back to the bike later in the day, I disconnected the starter and with 2 or 3 kicks she started  and ran fine. My question is this. As it has a Boyer fitted is it the same as my Harley was that unless the battery is fully charged it powers the starter and not the ignition circuit.  Didn't think of that yesterday but my Harley caught me out a few times with that.(one of the reasons it's now sold).

Bitsa (Ralph Wright - RIP):
Hi.
Don't really know but if its any help to you today was nice here too.Thought leave the wine alone go for a ride,started no problem but seemed for ever to get her off choke not normal spluttered like fury and after a kilometre then all of a sudden roared into life.Choke fully off and no problems accelerated right to the red line and ticked over as usual.I think Ill put it down to be plus 35 years old and with the mixture of modern fuels so be it.I am sure others will comment on this but it was still bloody good riding her.Just thought normally I always start her on the kickstart cos I like it today was on the button got me thinking!!!!! Weekend I will go back to the kickstart will let you know.
Cheers
Bitsa

Lobo:
Same problem for me: my K2 just ain't interested using the electric start if left a long while. (& it is, regularly). It would crank & crank with no hint of life until the battery is flattened if you tried...

...But, turn it over (on the kickstart) a few times to oil the bores etc, then ignition on, full choke, full throttle & she fires up on 1st or second kick. Thence a balancing act with throttle / carb to keep the revs reasonable.... & perhaps 2 or 3 mins before I'm happy to load the engine / take to the road. After this can use the elect start to your hearts content.... takes a nano-second.

And I'm 100% certain, if used regularly (daily basis etc) none of the above palaver would be necessary.

PS - unsure if necessary, but due the modern fuels comments I run the bowls dry @ before putting the bike to bed < any long spell.

Bryanj:
All the aftermarket electronics seem to need an A1+ battery voltage to work properly

adrian58:
Thanks everyone for your replies. Seems that it is just an issue with bolt on electronic ignition systems. Won't make that mistake again and a small price to pay for never having to set points again. Sadly I don't have power at my garage to use an Optimate. Just wish I'd realized it before cooking the solenoid . Still, 'Flea-Bay' to the rescue £9.95 delivered. (hope it works) :P

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