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Thank you. That explains a lot both on the head pressure to the needle and the routing of fuel. Much appreciated. So if one is using the external tank then, the fuel switch should be in the off position, which makes sense as the fuel line from the pump/external tank enters the carb above switch...
Hello. I’m getting familiar with a new to me 1999 Johnson 4hp and have a question. The motor has an inboard tank and option to external tank hookup. It also has a fuel cutoff on the choke. I have noticed that if I run the motor on the internal tank and then leave it standing with the fuel still...
Hello--
I've searched through the threads and didn't see information on this and have tried a few google searches without success. Does anybody know the actual thrust/power differences between a 15 hp and 9.9 hp late 90's (looking at a 1998) outboard? I was told recently that the specs are...