Mercury 500 50hp thunderbolt - need help with connectors

[Dukie]

hi all,

I have an old Mercury 500 50HP Thunderbolt outboard. I'm new to outboard motor and still learning about these engines.

Here is my Problem:

Before I took the boat out to the water for testing. I've changed all the 4 sparks plugs, gears oil and mix the 2 strokes oil to the gasoline. When I pulled the flywheel 1-2 times, the engine starts running and I left it running for 3-4 minutes and then turned it off. Every time I pulled the engine it will starts right away, but when i took it out to the water, it's start and ran for a few minutes then no matter how many time we tried to pull the flywheel it doesn't start anymore. Does any body know what is happening with this motor?

I also found 3 fitting are NOT connect to anything, could someone tell me what are those fitting are for and how they should be connects? See attachment photos


Much appreciated.

http://www.dukedynamics.com/download...ard/image1.JPG
http://www.dukedynamics.com/download...ard/image2.JPG
http://www.dukedynamics.com/download...ard/image3.JPG
http://www.dukedynamics.com/download...ard/image4.JPG

 

[GA_Boater]

Welcome aboard.

Vents hose fittings for the ozone made by the points arcing. Don't worry about them, but a hose connects them to the front motor support.

Is the fuel tank vent open?

 

[racerone]

No serial # posted.-----Are we sure there are breaker points in this distributor ???-----When you start it at home are you supplying cooling water to the impeller ?