Mikuni BS (CV) 34 carb fuel line I.D./O.D.

Take the carbs or a section of old fuel line to your local mower/small engine repair parts shop. Mine had a rack full of bulk spools with all different sizes. My mower, pressure washer, generator and snow blower all have Honda engines. My neighbor's small John Deere has a Kawasaki engine. They'll carry metric sizes. I ended up with Honda brand for the main fuel lines. They also had a perfect match for the smaller overflow tubes. Quality fuel line is not cheap. You get what you pay for.

kaw-a-holic wrote: I use Tygon brand 5/16' ID fuel line will fit the BS34's. This is NOT cheap fuel line but stays flexible and will not need to be replaced in 6months to a year. It is not affected by our crappy new fuel, heat or sunlight. Napa carries the stuff, usually in yellow but can be found in clear on eBay and Amazon.

+100 on the Tygon. You can get any size/length you need at McMaster. I use it on all my bikes.

ThatGPzGuy wrote:

kaw-a-holic wrote: I use Tygon brand 5/16' ID fuel line will fit the BS34's. This is NOT cheap fuel line but stays flexible and will not need to be replaced in 6months to a year. It is not affected by our crappy new fuel, heat or sunlight. Napa carries the stuff, usually in yellow but can be found in clear on eBay and Amazon.

+100 on the Tygon. You can get any size/length you need at McMaster. I use it on all my bikes.

Only certain types of Tygon are fuel resistant.

Nessism wrote:

ThatGPzGuy wrote:

kaw-a-holic wrote: I use Tygon brand 5/16' ID fuel line will fit the BS34's. This is NOT cheap fuel line but stays flexible and will not need to be replaced in 6months to a year. It is not affected by our crappy new fuel, heat or sunlight. Napa carries the stuff, usually in yellow but can be found in clear on eBay and Amazon.

+100 on the Tygon. You can get any size/length you need at McMaster. I use it on all my bikes.

Only certain types of Tygon are fuel resistant.

Found this on McMaster-Carr:

Tygon Formulation: F-4040-A

Not only will this tubing remain flexible when used with gasoline, heating oils, cutting compounds, and coolants, it also withstands lower temperatures than other fuel and lubricant tubing. Tubing is semi-clear yellow; you can see something is in the line, but the view is limited.

650ed wrote: Here's what I use..........

www.kzrider.com/forum/3-carburetor/59932...the-fuel-line#685995

Have bought and used the Goodyear 5/16ths line from Farm and fleet and the same clamps..... agree clamps go on and off "so" much easier you will wish you tryed em years ago ......and the line has held up for me replacing them every 4-5 years and they are still like new when I do..... I still have a long piece I use for hooking the tank up on a stand to sych the carbs that I think I bought way back in the early 80s that is as flexable as when I bought it.