TOPIC:

It´s possible to turn the pointer plate 180 degrees of.

I had a similar situation with a Yamaha XS400. Turned out that part of the problem was the butterfly seals on the carb shafts. Once the bike warmed a bit it would create a vacuum leak around the seals. They had small cracks in them.

A little motor like this is just about as complicated as my lawnmower. LOL With that little bit of sarcasm out of the way,.. ether + spark= KaBOOM. I do this quite often to seat the bead on a tire, if I can't get it to seal by pulling it up on the bead. Be sure to have your fingers out of the way or they will get smashed in the explosion.

ANY motor with 110 PSI compression and spark will fire on either. No spark = no kaboom. Easy peasy.

RustToRedemption wrote: Bloggs did properly installing the mechanical advancer solve your problem?

Indeed it did, kudos for the help bro. Mech advancer re-installed correctly, had it timed perfectly 180 out haha. Fired up easy as on both electric and kick start!

Now to chase the hanging idle. It is only a hanging idle now, the hunting idle which was constant is gone.

Bike when warmed up and with no choke idles fantastically, has the hanging idle which comes down slowly after the motor is revved.

I'm guessing it's probably good etiquette to close off this thread and move over to the carby section to keep the threads clean and to the point, assuming the hanging idle is a lean condition that is.

No doubt they will say turf the old mikuni VM33 lol

Thanks again @rusttoredemption

Scirocco wrote: It´s possible to turn the pointer plate 180 degrees of.

100%

When you realise your on TDC comp stroke, watching the valves and realising the points are out 180deg it's a face palm moment.

Bonus to this is I learnt a hell of a lot along the way I didn't know before.

loudhvx wrote: On a Kz with points and one coil, I think you would notice if the points cam were installed backward. When trying to time the points, the timing marks would be too far off (180 degrees off) to time the points correctly. That would have raised questions before trying to start it.

Whereas, on the bikes with two coils, there are two sets of timing marks so it would be easy to confuse one set with the other.

Or, on bikes with electronic ignition, it's easy to flip the rotor since you are not checking the rotor with anything.

You wouldn't believe it, but, I did eventually notice lol

And it taught me to look at the system as a whole, not just when the timing marks roll on past.

The mech advancer lobe was 180 out, points cam rolls around once and the same timing marks go past twice on the crank, Statically timed on wrong stroke with cam lobe 180 out it was never going to fire.

When I popped the valve covers and watched valves in motion in relation to spark timing I said a few choice words, undid 4 screws, fixed the problem and reassembled.

Props to RustToRedemption.