Thanks for your help.
The boat is actually a Nautica Jet Dingy with a GP760 motor in it. The
primer bulb is the standard for that boat and it is an old outboard
type. I will look into a primer kit because the bulb does a good job of
getting the fuel to the carb but it does not put fuel into the
cylinders. I was debating doing a carb and fuel pump (integral to the
carb) and it looks like it needs one.
Tom Howlin wrote:
> Ed wrote:
>> I have two issues with my 1997 GP760.
>> First issue is a year old. The unit will not start cold without
>> starter fluid. Choke works fine, unit runs fine and will restart
>> anytime during the same day. Before discovering started fluid, I
>> could get it started but it took forever and many times needed a jump
>> before it actually kicked in. It has a primer ball and it is hard so
>> there is pressure to the carbs.
> What do you mean a primer ball? This was not standard equipment on the
> Yamaha. If someone added a primer kit, the choke plates should be gone
> and the primer looks like a cigarette lighter plug that you pump up and
> down to squirt raw gas into the carbs. If there is an old fashioned
> outboard motor type primer ball, then someone has futzed with the fuel
> system and this is likely the cause. Install a real primer kit and it
> will likely solve your problem.
> Your other problem is also carb related and perhaps they need a good
> cleaning (there is an internal fuel filter inside the carb that gets
> gunked up with yamafuzz and so it probably needs cleaning).
> >> Stay informed about: gp760 Yamaha 1997 issues