This is a Mercury 8 HP outboard for my small yacht. 2 stroke, gear on handle. S/N is O9856975 and I think it's from 1996 but I never could retrace this s/n in the charts... I'm sure it's not a "Q".
Anyway, always ran fine and has been sitting for a while. Decided to do maintenance and replaced complete waterpump assembly. When testing fired up once and died. Since then, no spark on both cylinders. Took off the kill switch first, I take it this is a normal outboard kill switch (shorting?). It's on the tiller, as is the gear. I started reading and got a CDI/Stator test discription. It's confusing to me that CDI is also called switchbox
.
I can't measure peak voltage but get voltage from the charging circuit (to rectifier) and the brown wires when cranking. Took off the rectifier part to exclude that. Read the ohms value from stator to ground.
White/black wire 145
yellow/black wire no reading.....
I pulled the flywheel and wiring up to where the wires go into the stator is ok.
I should measure resistance fir the switchbox but how do I do that? If I measure the black/white or yellow/black to ground on the switchbox (all other wires still attached, only the stator disconnected) I get no readings. I was wondering if I should try and replace the Stator first (and that's quite expensive for me) and then see if the switchbox is maybe faulty or should I replace both as it's obvious they are both bust. Also, could this be caused by a bad rectifier? I don't want to end up with new parts being fried straight away as it will be quite an investment (I can get a simmilar running engine at about 50% surcharge). Can I test the rectifier easily?
thanks a million.....
Lucas
Anyway, always ran fine and has been sitting for a while. Decided to do maintenance and replaced complete waterpump assembly. When testing fired up once and died. Since then, no spark on both cylinders. Took off the kill switch first, I take it this is a normal outboard kill switch (shorting?). It's on the tiller, as is the gear. I started reading and got a CDI/Stator test discription. It's confusing to me that CDI is also called switchbox
.I can't measure peak voltage but get voltage from the charging circuit (to rectifier) and the brown wires when cranking. Took off the rectifier part to exclude that. Read the ohms value from stator to ground.
White/black wire 145
yellow/black wire no reading.....
I pulled the flywheel and wiring up to where the wires go into the stator is ok.
I should measure resistance fir the switchbox but how do I do that? If I measure the black/white or yellow/black to ground on the switchbox (all other wires still attached, only the stator disconnected) I get no readings. I was wondering if I should try and replace the Stator first (and that's quite expensive for me) and then see if the switchbox is maybe faulty or should I replace both as it's obvious they are both bust. Also, could this be caused by a bad rectifier? I don't want to end up with new parts being fried straight away as it will be quite an investment (I can get a simmilar running engine at about 50% surcharge). Can I test the rectifier easily?
thanks a million.....
Lucas