Looking for a Harbor Freight Pump Gas Cap

[Travelover]

I've got a 3" gas water pump from Harbor Freight. Unfortunately, the gas cap vibrated off and landed on the engine. I arrived to find a melted plastic pancake. An email to HF was met with a "Sorry, parts no longer available" message.

The OD of the threads on the gas tank are about 2 1/4". A generic 2 1/8" cap sold at places like Home Depot is too small.

Any bright ideas on where to look for a cap or ideas to make one out of common materials? :confused3:

 

[kc5dlo]

Predator threaded type non vented gas cap

This looks like it

 

[Travelover]

Predator threaded type non vented gas cap This looks like it

Thanks, but the original cap had female threads like a jar top. I've even tried to find a jar top that will fit, not so far no joy.

 

[kc5dlo]

I recently purchased a 3" trash pump and it also has a threaded cap and a separate tank vent with a hose going to the carb or air cleaner. Must be EPA mandated. Not sure if mine has male or female threads.

I was looking for a replacement cap to modify like they do to get extended run times on Honda generators. This pump does have a fuel pump so I might just slip a fuel line into a gas jug and bypass the built in tank. Might be a temp option for you.

 

[bcp]

You could buy a neck

Tanks Inc. Flanged Fuel Filler Necks FN-2A - Free Shipping on Orders Over $99 at Summit Racing

Fuel Tank Filler Necks - Free Shipping on Orders Over $99 at Summit Racing

or cut one off an old gas tank and solder it on, if you have a metal tank.

Bruce

 

[Travelover]

You could buy a neck

Tanks Inc. Flanged Fuel Filler Necks FN-2A - Free Shipping on Orders Over $99 at Summit Racing

Fuel Tank Filler Necks - Free Shipping on Orders Over $99 at Summit Racing

or cut one off an old gas tank and solder it on, if you have a metal tank.

Bruce

Thanks, that would be an innovative approach.

 

[oldpilgrim]

 

[bcp]

That works, but they flare up, and taste bad when cooked, after you find your cap.

Bruce

 

[Bansil]

maybe a 2-1/4 npt black iron pipe fitting ? or plastic/pvc npt fitting?


or even brass my bus uses one about 2-3" in dia

 

[Travelover]

I recently purchased a 3" trash pump and it also has a threaded cap and a separate tank vent with a hose going to the carb or air cleaner. Must be EPA mandated. Not sure if mine has male or female threads. I was looking for a replacement cap to modify like they do to get extended run times on Honda generators. This pump does have a fuel pump so I might just slip a fuel line into a gas jug and bypass the built in tank. Might be a temp option for you.

This pump had a similar system and the pump would die unless I left the cap a little loose. That was why it vibrated loose and melted.