So all 280 transmissions are the same?
The lower unit determines the ratio.
Just a question.
I cruze ebay for Volvo Penta stuff often and i often see lower units listed with a gear ratio. I thought
If the wick stiff just replace it.
Even a little skin oil will foul the points. Be sure and clean the points and feeler guage with acetone or laquer thinner. One of my books say to replace