[iain willox]

Hi to all out there,
need help on my 40 hp mercury two stroke 2 cylinder1978 with thunderbolt ignition and it has no spark.it is a manual start .checked wires for any breaks all seems ok,any suggestions would be appreciated
tks
Iain

[Motor Boater Bill]

Tiller or remote? Disconnect kill switch wire and mercury switch (if it has one) to eliminate those two possibilities.

[iain willox]

Originally Posted by iain willox

Hi to all out there,
need help on my 40 hp mercury two stroke 2 cylinder1978 with thunderbolt ignition and it has no spark.it is a manual start .checked wires for any breaks all seems ok,any suggestions would be appreciated
tks
Iain

did disconnect kill switch and it was tiller control converted to cable control

[iain willox]

hi i did disconnect kill switch no luck.It was tiller control converted to cable control

[Laddies]

Maybe this will help from CDI

[iain willox]

thanks the diagram was a great help got great spark now

[Motor Boater Bill]

What was the problem?

[iain willox]

Problem was with kill switch.
tks: