New to Kiekhaefer Mercury outboards

[vicp21]

Hey everyone. I recently got my first outboard motor. I have a Larson 170 with the 4.3 I/O, but this is for my little fishing boat (12ft Seaking). The outboard I picked up is a 1971 Kiekhaefer merc 40. I was able to figure out the year by searching on here and finding the corresponding serial number . My question is, what gas tank do I use with this? The fuel line going to it is cut and there's no end on it. I've seen the tanks with 2 ports teeing off of the top and also just a single port. Searching the web I found adapters that work on the 2 port tank to go from 2-1 port, but I don't know which one I'm supposed to have. My dad said he remembers some Johnson or Evinrudes used 2 hoses and Mercs used 1 that twists on (or vice versa he wasn't sure). Thanks for any info:thumb:

 

[Chinewalker]

Mercs of that era used a single hose, twist-type fitting. The 40, 75 and 110 (4, 7.5 and 9.8hp) used a special smaller version of this fitting. The smaller fitting isn't impossible to find, but is certainly harder to find than the standard Mercury twist fitting. OEM part number is 30635T3 and is referred to as a "check unit" in some of the literature. Should be able to find one at a dealer. I don't believe there is an aftermarket version available.

 

[vicp21]

Mercs of that era used a single hose, twist-type fitting. The 40, 75 and 110 (4, 7.5 and 9.8hp) used a special smaller version of this fitting. The smaller fitting isn't impossible to find, but is certainly harder to find than the standard Mercury twist fitting. OEM part number is 30635T3 and is referred to as a "check unit" in some of the literature. Should be able to find one at a dealer. I don't believe there is an aftermarket version available.

Ok great thanks! I had found this one but I wasn't sure if it was something I should try to use. So I'm guessing the larger motors use a larger fuel line to go with the standard Mercury twist fitting? Could I splice the standard fitting on since I just have a hose currently? I currently don't have a tank for it either so I'm willing to go with a different one if need be.
http://www.ebay.com/itm/FUEL-LINE-T...E-20671-NYLON-FEMALE-/161523783072?rmvSB=true

 

[merc850]

These guys have it http://store.oldmercs.com/category_s/1581.htm

 

[Chinewalker]

Any sort of splicing will entail difficult disconnection any time you want to take the tank out to fill, etc. The fuel fittings are available and work well. I'd stick with how it was originally designed rather than trying to jimmy-rig something up and risk leakage, etc. Google the Mercury part number i gave you above and you'll find many places that have it...

 

[vicp21]

Any sort of splicing will entail difficult disconnection any time you want to take the tank out to fill, etc. The fuel fittings are available and work well. I'd stick with how it was originally designed rather than trying to jimmy-rig something up and risk leakage, etc. Google the Mercury part number i gave you above and you'll find many places that have it...

Alright, I was thinking if I couldn't find a Merc tank at a decent price to go that route, but I can just get the small 1/4 twist Merc one and find a Merc tank. Right now I have about 3ft of hose coming out from the engine cover.

 

[Chinewalker]

For the tank itself, the motor doesn't care if it's a Mercury tank or Johnson, or what have you. As long as it is an appropriate, vented gasoline tank for outboards that you can put a fuel line with the correct fitting, you're on your way.