1978 mercury 40 hp thunderbolt ignition

[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]

Re: 1978 mercury 40 hp thunderbolt ignition

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

 

[iain willox]

Re: 1978 mercury 40 hp thunderbolt ignition

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]

Re: 1978 mercury 40 hp thunderbolt ignition

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

 

[Laddies]

Re: 1978 mercury 40 hp thunderbolt ignition

Maybe this will help from CDI

 

[iain willox]

Re: 1978 mercury 40 hp thunderbolt ignition

thanks the diagram was a great help got great spark now

 

[Motor Boater Bill]

Re: 1978 mercury 40 hp thunderbolt ignition

What was the problem?

 

[iain willox]

Re: 1978 mercury 40 hp thunderbolt ignition

Problem was with kill switch.
tks: