Thanks Dave!

This is what I was hoping to find out.

Cindy

Dave Lewis wrote:
> *Type 1 fuel fill 1 1/2" diameter.*
>
> *Type 1 fuel line tank to engine 1/2"*
>
> *Type 1 or 2 vent lines.
> *
>
> *
> *
>
> * FROM BOATS US:
> *
>
> *Fuel Hoses*
>
> The same guidelines we suggest for exhaust hoses also apply to your fuel
> lines. Obviously, anything carrying explosive material has to be strong
> and durable. Three types of hose are normally found on marine engines:
> flexible hose (A1, A2, B1, and B2), steel lines (on the engine), and
> copper tubing. What concerns us is the flexible tubing, since this is
> the part of the system most likely to fail. The metal hoses can be
> checked when servicing your engine, but the flexible hoses need constant
> monitoring. Due to vibration, it is a legal requirement that metal fuel
> lines be connected to the engine with flexible hose. You should check
> all joints for leaks at least twice a season. Use your fingers, and look
> out for stains on or around the fitting. For hoses without permanent end
> fittings, use stainless steel clamps.
>
> Wipe your hoses with a dry rag and see if you smell gasoline. This is a
> sign that your hose has disintegrated and needs replacement. Hoses
> deteriorate more quickly if your engine uses gasoline blended with
> alcohol. Fuel blended with methanol makes fuel lines brittle, while an
> ethanol mixture makes them soft. This means that the best way to avoid
> alcohol damage is to use alcohol-free fuel. All flexible fuel lines must
> be USCG approved SAEJ1527 hose, which is resistant to alcohol.
>
> So, which hose should you go for? Well, fuel lines use a standardized
> lettering system. This initially seems a little confusing, but is very
> simple. Of the two types available, A and B, A is more fire resistant,
> and has to be used at the fuel pump and carburetor where more than five
> ounces of fuel could spill if the hose is cut. Type 1 has less
> permeation loss than Type 2. This makes Type 1 the better hose for all
> applications. Therefore a hose marked A1 is a stronger, more leakproof,
> fire-resistant line. It is also more expensive but, as with the silicone
> exhaust hoses, we think the cost is worth it.
>
>
> Dave

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Received on Sun Dec 17 20:21:24 2006