Topic: Fuel petcock(valve)

[malxerr]

Kindly can you let me know if the Tank fuel valve is in the Res position or Stop position as shown in Picture.
Regards

[dave500]

thats stop or off,straight down is on main tank,forwards is reserve supply.

[pjlogue]

I would disagree with Dave500.  You can see the stamped "stop" on the holding plate that is facing forward.  The petcock in the photo is on reserve.

-P.

[jonda500]

thats stop or off,straight down is on main tank,forwards is reserve supply.

+1 yep, Dave has it right, that's off.
John

[bryanj]

If you look very closely there is a small arrow pointing opposite to lever which is pointing at OFF

[CycleRanger]

You can download a PDF of the owners manual here:
https://www.honda4fun.com/materiale/documentazione-tecnica

It explains the petcock setting/positions and other useful information. 

[dave500]

I would disagree with Dave500.  You can see the stamped "stop" on the holding plate that is facing forward.  The petcock in the photo is on reserve.

-P.

the words on the plate refer to the actual thumb lever part,did they have reversed taps eleswhere?

[pjlogue]

I would disagree with Dave500.  You can see the stamped "stop" on the holding plate that is facing forward.  The petcock in the photo is on reserve.

-P.

the words on the plate refer to the actual thumb lever part,did they have reversed taps elsewhere?

My  appologies, I stand corrected. 

-P.

[dave500]

no worries,that plate does have the stop marked in a different position,not a real clear photo though?if malxerr could post a new sharp clear photo it might show how the overseas ones got marked?,the levers action would be the same though,thatll be a 6 pack of cyber beers please.

[Oddjob]

Easy way to find out. Takes off the pipes and the one position where it doesn't spill fuel everywhere is Stop.

[Stev-o]

It can be confusing, Honda could have done a better job at making it clear. And not all Hondas are the same?

On my Kaw, the handle is up for reserve, no question there.

[bryanj]

In the first pic is the plate on upside down?

[Oddjob]

If it was Bryan, the writing would be upside down.

[ZTatZAU]

In the first pic is the plate on upside down?

No! I don't think so.
The text is is upright but the labels run across the top of the plate rather than the bottom as in the picture Dave posted.
ZT

[bryanj]

True to both, been a bad few days this end

[seanbarney41]

In the years between 1974-1978 it seems like Honda went "petcock crazy".  If you have owned lots of Hondas from this period it seems every model and year had a unique, subtly different petcock! changing from one side of the tank to the other, mounting styles, different bung sizes, different numbers of outlets, and different layouts for the selector positions.  You have to read the fine print on every single one very carefully!

[Ozzybud]

In the years between 1974-1978 it seems like Honda went "petcock crazy".  If you have owned lots of Hondas from this period it seems every model and year had a unique, subtly different petcock! changing from one side of the tank to the other, mounting styles, different bung sizes, different numbers of outlets, and different layouts for the selector positions.  You have to read the fine print on every single one very carefully!

+1 on this post about petcock crazy.
Most of my bikes are different.
All the petcocks were made by Keihin for Honda.
I'm sure there was collaboration and specs that Honda sent to Keihin to match the tanks.
The same Petcocks were used by other manufacturers.Kawasaki,Suzuki etc...
KZ400 Has the identical petcock as the CB350F

[bryanj]

That second pic shows spring washers for the holding screws thats a guaranteed leak through to carbs

[Stev-o]

In the years between 1974-1978 it seems like Honda went "petcock crazy".  If you have owned lots of Hondas from this period it seems every model and year had a unique, subtly different petcock! changing from one side of the tank to the other, mounting styles, different bung sizes, different numbers of outlets, and different layouts for the selector positions.  You have to read the fine print on every single one very carefully!

+1 on this post about petcock crazy.
Most of my bikes are different.

+2!  I have a box of spare petcocks, but seems every time I need one I dont have the right type.

[carnivorous chicken]

KZ400 Has the identical petcock as the CB350F

That is nowhere near a stock petcock for a CB350F. The fuel outlet comes out horizontally and at an angle, not vertically as in that one. They might work, but I think it would need some work in order to do so. There are also aftermarket 350F petcocks but they come with two outlets and also don't fit properly. OEM 350F petcocks go for upwards of $150 because they are rare and the only ones that work well on the 350F.

[Ozzybud]

KZ400 Has the identical petcock as the CB350F

That is nowhere near a stock petcock for a CB350F. The fuel outlet comes out horizontally and at an angle, not vertically as in that one. They might work, but I think it would need some work in order to do so. There are also aftermarket 350F petcocks but they come with two outlets and also don't fit properly. OEM 350F petcocks go for upwards of $150 because they are rare and the only ones that work well on the 350F.

It's the replacement honda one that will work.(pictures are for reference only) The factory one has1 port not 2.
My point was that petcocks were made by Keihin for all Japanese bikes. And a original KZ 400 petcock is identical to a CB350F,1 port horizontal

[carnivorous chicken]

KZ400 Has the identical petcock as the CB350F

That is nowhere near a stock petcock for a CB350F. The fuel outlet comes out horizontally and at an angle, not vertically as in that one. They might work, but I think it would need some work in order to do so. There are also aftermarket 350F petcocks but they come with two outlets and also don't fit properly. OEM 350F petcocks go for upwards of $150 because they are rare and the only ones that work well on the 350F.

It's the replacement honda one that will work. The factory one has1 port not 2.
My point was that petcocks were made by Keihin for all Japanese bikes. And a original KZ 400 petcock is identical to a CB350F,1 port horizontal

Don't want to get into an unnecessary argument, but for the sake of accuracy they definitely are not "identical."

https://images.cmsnl.com/img/partslists/kawasaki-kz400-1974-usa-canadamph-kph-fuel-tank7677-kz400-d3_bigkar095552464_4012.gif

https://images.cmsnl.com/img/partslists/honda-cb350f-four-general-export-fuel-tank-cock_bigma000079f11_07ef.gif

I've owned both 1974 bikes. They only overlapped one year, 1974, and the later KZ400 petcocks are very different. The earlier one might work (looks like they mount the same), but the fuel outlet comes out from a different spot at a different angle.

CB350F groups are full of people complaining about how non-original petcocks don't work, petcocks made for other bikes don't work, and how hard it is to find an oem one.

[Ozzybud]

KZ400 Has the identical petcock as the CB350F

That is nowhere near a stock petcock for a CB350F. The fuel outlet comes out horizontally and at an angle, not vertically as in that one. They might work, but I think it would need some work in order to do so. There are also aftermarket 350F petcocks but they come with two outlets and also don't fit properly. OEM 350F petcocks go for upwards of $150 because they are rare and the only ones that work well on the 350F.

It's the replacement honda one that will work. The factory one has1 port not 2.
My point was that petcocks were made by Keihin for all Japanese bikes. And a original KZ 400 petcock is identical to a CB350F,1 port horizontal

Don't want to get into an unnecessary argument, but for the sake of accuracy they definitely are not "identical."

https://images.cmsnl.com/img/partslists/kawasaki-kz400-1974-usa-canadamph-kph-fuel-tank7677-kz400-d3_bigkar095552464_4012.gif

https://images.cmsnl.com/img/partslists/honda-cb350f-four-general-export-fuel-tank-cock_bigma000079f11_07ef.gif

I've owned both 1974 bikes. They only overlapped one year, 1974, and the later KZ400 petcocks are very different. The earlier one might work (looks like they mount the same), but the fuel outlet comes out from a different spot at a different angle.

CB350F groups are full of people complaining about how non-original petcocks don't work, petcocks made for other bikes don't work, and how hard it is to find an oem one.

I stand corrected.

There is no need to argue I should have used the word similar.

My point being was that Keihin made all the petcocks and they were very similar in design.
An OEM unit is made by Keihin in a honda Bag or box.

[carnivorous chicken]

I think a lot of the bodies have the same or very similar shapes with various potential outlets -- some petcocks have what look like blocked or unused ones.