Suzuki GN250J wont start

I let my bike set for a year before trying to start it.

I installed a new battery, right handle bar switch on, key on (and lights),
neutral light on, side stand up and I pressed the starter button- nothing.

Did I forget an interlock? I hope so but I can't think of another. There is
no clutch interlock

I then ran a hot wire to the top of the starter relay. The motor kicked over
smartly so the starter and relay are OK.

I did this again with the key and handle bar switch on, side stand up, in
neutral, but no fire.

I jumped out the kick stand switch without results.

I went to my Suzuki shop to get a service manual, but it was out of print.
Anybody have a wiring diagram for this bike?

The ignition switch on a CDI system normally grounds out the SCR located in
the "electronic box". Do the interlocks also ground the SCR or do they just
interrupt the power to the starter relay or both?

Any suggestions?

John

 

Hi John.
I don't remember the year, but your bike is late 80's...
You should follow a direct progression to find the problem.
Does the light dim when you hit the start button?
If not, I would start by checking all fuses and grounds, especially the kill
switch.
Still no go?
One by one, disconnect ALL the nonessential components (lights, horn, etc)
until all you have is the basic circuit.
Now follow the power and check each blasted wire and component.
Some folks skip the "disconnect everything" stage but I had a horn "hot
lead" touching my frame and it buggered the whole bike. Looked and tested
for hours till an experienced guy told me that trick. 10 minutes later,
Tah-Dah!
Let us know...

 

Split the right hand switchblock & check that the kill switch & starter
button have clean terminals...

beyond that I can't think of anything to try. When my wife's GN refuses
to start it's usually because either the battery connection is loose or
because it's just being bloody minded. I know machines don't do bloody
minded, but the number of times she's sent me outside to fix it & all
I've done is drink a coffee & found it will start...