GPz550 Communication 11/19 Issue: “Fuel Cock” – Consumable Parts? Amazing Kawasaki Brings Daily Inspiration (*´ω`*)

You might think I’m only working on my own bike, right?

I expand one topic broadly when publishing on this blog.
If I compress things too much, the content becomes unclear.
I think it’s better to focus on specific points and share them thoroughly—maybe it’ll be helpful to someone.

So this time, it’s about the fuel cock.
Surprisingly, most of the fuel cock’s gasket parts are available for purchase.
Plus, you can even get the cock body itself, so the reliability is extremely high. And it’s reasonably priced too.

If it were a customer’s bike, I’d probably recommend a new one,
but since it’s mine, I think if it leaks, I can just fix it again.
With just a fuel cock like this, if small parts are supplied,
motorcycle parts can actually be used for quite a long time.

And if compatibility increases, it benefits both manufacturers and users.
I hope more parts will be like this in the future.

株式会社ヒロチー商事 楽天市場店
¥9,256 (2026/09/15 21:33時点 | 楽天市場調べ)

Fuel cock small parts are truly appreciated (*´ω`*)

Since most parts are available, it’s really appreciated.
Fuel cocks can also be adapted to other models depending on mounting pitch.
Also, they generally have good compatibility, so you can use parts from one cock on another.

If you’re stuck because your cock is discontinued,
you might try ordering parts from a cock that has small parts supplied—it could be interesting.

Since there’s no end to it, I won’t replace the diaphragm

I only replace three rubber parts.

These are very important parts, and it’s truly appreciated that they’re available at the component level.
As things age, the cock gets heavy or stiff, which gets annoying.
If you properly replace these rubber parts
and adjust the spring tension, it’ll move much more smoothly.

Ultimately, it’s held in place by rubber tension and spring tension

The O-ring on the knob in the image and the lotus-like rubber gasket are critical.
If this tension isn’t firm, gasoline leaks and seepage tend to occur.

Considering this, the fuel cock knob has fairly strong spring tension, which is why the movement feels stiff.

I personally bend the spring that goes in front of the knob slightly to adjust and weaken the tension.
If you overdo it, you’ll get gasoline seepage, so be careful.
Also, some fuel cocks can’t be adjusted this way, so please note that.

After replacing the O-ring and adjusting the spring tension, it moves smoothly now.
Even old OEM fuel cocks can still be used if small parts are supplied.

With adjustments like this, the movement becomes smooth, so let’s keep using them for a long time.

株式会社ヒロチー商事 楽天市場店
¥9,256 (2026/09/15 21:33時点 | 楽天市場調べ)
デイトナ(Daytona)
¥3,551 (2026/09/21 02:35時点 | Amazon調べ)
ヘンリービギンズ(Henly Begins)
¥8,375 (2026/09/22 20:35時点 | Amazon調べ)

The article was not found.

  • Copied the URL !