Fuel Shut Off

cardenharry · Feb 12, 2011

I have changed the fuel filter on my DX33 ever spring until this past year. When I tried it the last time the shut-off valve seemed stuck and I was afraid that with too much force I would break something. Anyone else have any problem or suggestion on this. I would like to change it this spring. Just wondering what I might get into with this.

TomOfTarsus · Mar 18, 2011

Well, dear sir, I don't know if anyone can help you, but I sort of have the same problem on my little TC-18.

I wanted to check the bowl but couldn't turn the fuel shut-off valve above the bowl. There was a little Phillips head screw (see pics) that looked like a locking screw, and it wouldn't turn either. So a little PB-Blaster before supper, and after supper I turned it with a mini-vice grips (yeah, it still wouldn't turn with a screwdriver...). after I backed it out enough, I was able to turn the fuel shut-off valve, but the handle started to come out of the body!

So, what am I doing wrong here, folks? The manual just says to turn it to the "C" position...?

Great Scott! Just looked close at that second picture, the bowl IS transparent! I gotta clean that beauty up a bit! :ashamed:

Grayson Klassen · Mar 18, 2011

Is the phillips screw a locking screw or is a keeper screw for the shut off valve handle? What does the parts book say?

Jbrink64 · Mar 18, 2011

the little screw is a keeper-screw. The valves are aluminum in an aluminum housing. A little water, and they seize.

TomOfTarsus · Mar 18, 2011

I can believe they seize! But anyway, do I have to deftly turn it just enough to allow the shut-off valve handle to turn? Like I said, it seemed as though the valve handle was sliding out of the valve body when I was finally able to turn the handle. I tried just a slight loosening of the screw, but that didn't seem to do it.

Thanks, gents!

barbqranch · Mar 18, 2011

Personally, I would pull the valve out and slap my finger over the hole. Then smear a little oil on the valve or dip it into a can with a little oil in it then push it back into the valve. Later on, when the weather is better and I had some time, I would drain the tank and disassemble the valve and clean it all up and put it back together.

RickB · Mar 18, 2011

The fuel line leading to the filter head can be temporarily pinched off. Then the valve can be worked on, the filter head can be replaced (after you break the valve), or the filter can simply be changed. Very common problem with that style filter assembly.

Jbrink64 · Mar 18, 2011

TomOfTarsus said:
I can believe they seize! But anyway, do I have to deftly turn it just enough to allow the shut-off valve handle to turn? Like I said, it seemed as though the valve handle was sliding out of the valve body when I was finally able to turn the handle. I tried just a slight loosening of the screw, but that didn't seem to do it.

Thanks, gents!

The screw locks into the valve by 1-1.5mm. A couple of turns, and the valve is free to come out.