Petrol Tap

[adrian58]

Hi, I have a 1973 K2 and the petrol tap will not shut off properly when closed.I have fitted a new rubber seal (round thing with four holes) but it still keeps dripping. Anyone think/know of a fix ? ?  Thanks Adrian.

[Bryanj]

Did you fit the correct fibre washers unde the heads of the two screws holding the tap on---If not petrol will always leak through to the carbs.

Generic fibre washers don't work as they are too thin and too big OD for the correct ID

[keithK2]

I had the same problem, and eventually changed the fibre sealing washers underneath the two securing screws that hold the tap to the tank. These are tapped into the tank and can leak with age.
Good luck!

[adrian58]

Thanks both for quick reply. I'm talking about petrol dripping from the spouts where you put the carb feed pipes on not from tap to tank joint. Is that where you had your leaks ?

[steff750]

I'm talking about petrol dripping from the spouts where you put the carb feed pipes on not from tap to tank joint.

yes that is your problem the petrol is getting past the screws and fibre washers the only place left is for it to go ,is for it to drip from the tap and through the tap bowl and the feed pipes ,and you will only know this is by removeing the petrol lines (as you have done)and in extreme cases, if not recified you can have fuel leak from the carbs into engine and thin out the engine oil.

[adrian58]

Okay thanks for the info. I would never have thought of those washers being the cause. Straight on to DS in the morning.

[Bryanj]

Sit down and take a deep breath when you order they are damed expensive for what they are

16993-011-000

The only workable alternative I have found are 6mm "Dowty" washers---they are the thick alloy type with the internal rubber seal as used in hydraulics

[adrian58]

SORTED As you said, a bit dear for a few fiber washers and a O ring but glad it's done. Hoping to put it into a local show in 2 weeks (in a school hall) and if it was leaking petrol they wouldn't have allowed it. Thanks again for your help.

[SteveD CB500K0]

There are members over there who have done this in the past. Bob Wessner is a member here. PM him.


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[mickwinf]

I have same problem so would be interested in buying a few at a fair price!

[adrian58]

This site/community is GREAT.

[Bob Wessner]

If the part number is that listed earlier [16993-011-000] I checked at ServiceHonda parts and they list them at $2.78 per.

P.S. BikeBandit lists them at $3.74 per

What is the site in Ohio a I should check

[Bob Wessner]

It's this one Bob, http://www.ohiocycle.com/catalog.html

Checked that site, but the part number listed in this thread and matched to their list indicates it is for these models below. Are you sure these are interchangeable with a CB750K?

C110,CA110  16993-011-000    FUEL COCK MTG. SCREW PACKING WASHER         1.50
S65,CA200+  16993-011-000    FUEL COCK MTG. SCREW PACKING WASHER         1.50
S90,CL90+   16993-011-000    FUEL COCK MTG. SCREW PACKING WASHER         1.50
CB,CL160+   16993-011-000    FUEL COCK MTG. SCREW PACKING WASHER         1.50
CL72,CL77+  16993-011-000    FUEL COCK MTG. SCREW PACKING WASHER         1.50

[Bob Wessner]

Not to muddy the water further, but I own a 750K0. Checked my parts book and it lists this part as;

PACKING, fuel cock fixing 17993-250-000

And according to the parts book which lists parts for the 750 (K0), K1 and K2 being the same part for these models. Am I looking at the right part?

[Bryanj]

Bob the 011 number comes from the 500/550 book and yes the 750 is the 250 number but both petcocks are the same so I would think either will do