I have just bought a winter project, 1982 Yamaha sr250, on checking the spark when I press the start button I get an immediate spark then nothing untill I stop pressing the button and then a few seconds later I get a single spark, WEIRD.

the starter motor is a little worn/slow, would I be right in thinking there's not enough turn over speed to generate a full spark? I was thinking maybe if I bump it down the road.

any help appreciated.

Cheers

You should check if its a points ignition system, sounds like the points are not opening and closing properly.

Greetings Vroooooooooom

You should check if its a points ignition system, sounds like the points are not opening and closing properly.

Thanks guys

I sorted it now, it was the ht lead shorting out, I recharged the battery and whehey it lives!

Thanks again.

Don't spose you'd know if I need to remove cam gear to get the old rev counter cable out?

Cheers vroooOOOM

On the XT250 i had which is basicaly the same engine as the SR i seem to remember the tacho cable outer cable is held in with a circlip where it goes into the cam cover and then should pull out.Tony.