Re: 9.9 Johnson Seahorse
You have a 10=10hp,could be derated to 9.9 R= rope start. 76= 1976.G= the series.
You have a great motor.I have a 75 15hp basicly just like yours.These things are built like a tank.And will run forever with a little care.They do foul plugs,so get a good plug,I use NGK's.And keep two spares in your boat.