Pop it and look.

Proline boat gas tanks. Bait tank is small by California standards but in 14 years main problems have been on mercruiser engine or little aftermarket stuff like bilge blower and wiper and bait pumps. REPLACING BOAT FUEL TANK Filled with HOLES. Moeller builds standard gas tanks up to 350 gallons and diesel tanks up to 700 gallons.

They used lots of weak balse wood encased in glasscloth. If not aluminum it could be plastic or fiberglass. Proline appears to have glassed in boxes for strength.

To better understand boat fuel systems in general read Modern Gasoline Fuel Systems on Boats. Water seeping in from failed boat gas caps. The first time I took it out I ended up with a major fuel tank leak.

I have a 1996 proline 17 stalker series with a 30 gal fuel tank center console boat that I just bought about 2 weeks ago. I had a lot of fun in that old Proline but the 84 vintage was not the best quality boat on the market. Another point that I was trying to make is.

I just purchased a 1999 proline 241 WA. The gas tank is inaccessable. The box construction makes boathull strong but also heavy and no room to put tanks except stern and channel without cutting out.

Connect the hose to the fuel tank. Proline fuel tank replacement. Remove the cover of the fuel tank.