Help with TS150 not sparking

[flatyre]

Hi all, I just dragged a TS150 out of a barn with the intentions of getting it running, there is no spark at the moment so if anyone can give me advice on where to start that would be great. I bought a new denso plug, the old battery seems to be working though I've ordered a new one, can I use my multimeter t test the coil I some way? and do I need to strip the headlamp and check the ignition wiring? All I know is the battery was charged, the points were cleaned, and the new plug fitted but still no joy?

[stogadog]

I would check that you have a good earth. I spent ages trying to get one of my bikes to spark a while ago. Points cleaned and gapped, swapped coils over. Cleaned all the connections and nothing. Then someone suggested an earth direct to the engine = big fat spark!

[DAVID THOMPSON]

a good ground is always a good idea ...do not depend on the frame to provide it..
things in the headlamp do not ground very well through the fork neck bearings
dave

[MichaelTorre]

Trace the power from source to ground.
With your meter bracket or straddle any connection or component.
If you have a bad connection the meter will provide an alternative route::
other than the high resistance connection. It will tell how much is being shunted.
A tenth of a volt is too much on a minor circuit. A half is way too much on a major
such as start or circuit. I am speaking of twelve volts here. On six volts I would be
much more concerned. This works on a digital volt meter, a tool which allows one to
see electricity, amaze your friends , and see wind.
M