O ring of fuel connector

[tbhudson]

I've got a Tohatsu 18hp 2 stroke. The female fuel connector (3GF-70250-0)where it connects to the motor has an 0 ring inside the fitting to seal the fuel line. That rubber O ring or seal has failed and I need a new O ring. Cheaper than the entire fitting. Can't find the dimensions of the ring to get a replacement. Tohatsu says they can only get the complete fitting, no O rings. Anyone have a clue as to the specifications for that O ring?

 

[pvanv]

Use a dental pick and extract the old one. Then take the ring and the connector to NAPA or similar, and see if you can get a viton o-ring of the right size.

 

[tbhudson]

I'd love to but I'm on the island of Grenada just north of Venezuela and car part or seal places are darn rare unless you know exactly what you are looking for, which I don't. Shopping in the US is much easier than the rest of the world.

 

[Sea Rider]

A real crime that Tohatsu doesn't sell those connector o'rings as spares. Is current o'ring in one piece, not broken. What you could do is coonect connector and wrap several rounds of duct tape, 3M tape, start right from male connector end passing female commector's lenght, where fuel line begins to seal and not let air in, if air is sucked along with fuel, OB will miss badly at higher rpm.

Happy Boating

 

[tbhudson]

Unfortunately, we launch the boat and put back on board each night connecting the fitting in the morning and disconnecting in the evening. Not feasible to use the tape. If I was in the water all the time it would be fine. Living on a sail boat in a foreign country make you play it safe to make sure you have an engine and a dinghy when we get up in the morning. Know several boats that lost theirs to thieves during our travels but thanks for the idea,

 

[isaksp00]

I had the same issue with a Honda, for the o-ring on the male connector on the tank end (the one that keeps the steel sealing ball from popping out). Ended up buying a new connector, but I also bought a Viton o-ring kit at Napa and one small one happened to fit the old fitting, which is now a spare. The kit was not too cheap ($10?), but it may work for you.

 

[km1125]

In a pinch, you could also hit a local hardware store that might have o-rings for faucets. These will not last as long as a Viton would, but could get you going and give you an idea of what size Viton to order.

 

[Sea Rider]

Unfortunately, we launch the boat and put back on board each night connecting the fitting in the morning and disconnecting in the evening. Not feasible to use the tape. If I was in the water all the time it would be fine.

It's a matter of taping connector at morning removing tape at evening, till can get spare o?rings. If you are frequently connecting/disconnecting fuel hose, o'rings will wear fast, for them to last longer, apply some cooking oil, olive oil on both male connectors countours for o'rings to slide softly on them.

Happy Boating

 

[Snoopy11]

You can also buy a universal series O-ring assortment kits which carry a full range of O rings. Good thing to have in 3rd world. Most Caribbean countries have freight forwarding services that ship out of Miami.

I operate from a Caribbean country too. It's hard to get Honda replacement parts here. My country mainly carries Yamaha and Tohatsu. I thought Tahatsu was prevalent in the Caribbean.

 

[Sea Rider]

I thought Tahatsu was prevalent in the Caribbean.

Probably not in the whole Caribbean. In some islands as of BVI 9 out of 10 are Tohatsus, mainly 18, the rest Yams. Seems a better pricing issue along 3 HP more.

Happy Boating

 

[Snoopy11]

Good point Sea Rider. An idea for tbhudson might be to check local boat shops to see if anyone brings parts or shipments in from Venezuela or Guyana or Trinidad. I know Guyana and Trinidad carry parts for Tahatsu OBs.