K and B 3.5 Outboard Boat Engine Hookup

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K and B 3.5 Outboard Boat Engine Hookup

Postby bdog08 » Sat Jul 18, 2009 11:41 am

Hi, I am relatively new to the RC Nitro Boat world and I was confused on how to hook up the gas tank to the engine and all of the other hookups that are needed for the engine. The gas tank on the boat has two hookup prongs on it. Any help would be appreciated.
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Postby bdog08 » Sat Jul 18, 2009 11:47 am

It looks to be an 8907 model.
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Postby SteveM » Sun Jul 19, 2009 8:23 am

For all of my K&B 3.5cc outboards I used an 8oz Sullivan tank. I placed my tank so that the stopper was facing to the rear of the boat. I used two lines, one to the carb and the other to the pressure nipple on the lower unit. You can either use a clunk type fuel pickup or just use a bent brass tube. Make sure whatever you use that the pickup is located in the lower left of the tank, this from the drivers perspective.
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Postby bdog08 » Sun Jul 19, 2009 5:26 pm

Does the line attached to the pressure nipple attached to the second connection on the gas tank?
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Postby SteveM » Mon Jul 20, 2009 5:08 am

bdog08 wrote:Does the line attached to the pressure nipple attached to the second connection on the gas tank?


Yes. The 'vent' line on the fuel tank is connected to the nipple on the lower unit. The exhaust is used to add pressure to the tank in an effort to push fuel to the carb.
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Postby bdog08 » Mon Jul 20, 2009 7:18 am

Thanks for the help!
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