Senke 150-8 mixture adjusting screw for cab PZ27

[Hydra]

Please where can I find the mixture adjusting screw on the PZ27? As I need to reduce the inflow of patrol.

Thanks in advance!

[Thumper]

Originally Posted by Hydra

Please where can I find the mixture adjusting screw on the PZ27? As I need to reduce the inflow of patrol.

Thanks in advance!

Very likely there is an aluminum cap covering the screw. Look near the idle adjustment screw, probably on the airbox side. If it is near the airbox, it is an airscrew (opening it leans it out). Close it (clockwise) to enrivh the mixture. This is probably how yours works.

Some carbs have it near the intake plenum/manifold-if it is here, it is a fuel screw and opening it up increases fuel.

Just drill out the cap, and there should be a flathead screw hidden under there.

[red2003]

Originally Posted by Hydra

Please where can I find the mixture adjusting screw on the PZ27? As I need to reduce the inflow of patrol.

Thanks in advance!

The fuel screw on a PZ27 is under the very front (engine side) of the carb. There is a boss that drops down (the fuel bowl is molded around it). There may well be a welch plug covering it, but it's pretty easily removed. You'll need to remove the carb to get at it.

[Hydra]

It's true, there is a screw on the motor side, completely concealed. However, it is impossible to reach this screw with a screwdriver. What is the logic behind this? How are you supposed to regulate the fuel supply with the carburetor removed? Would the designers of this carburetor be drunk or am I simply too stupid to understand this technology

[dirtbkr188]

You can use one of THESE like THIS

[red2003]

Originally Posted by Hydra

It's true, there is a screw on the motor side, completely concealed. However, it is impossible to reach this screw with a screwdriver. What is the logic behind this? How are you supposed to regulate the fuel supply with the carburetor removed? Would the designers of this carburetor be drunk or am I simply too stupid to understand this technology

It's not something that generally needs to be fussed with once it's set. You can get one of the right angle screw drivers, or alternately use a #1 flathead power screwdriver bit. It's def in a shitty spot.

[zero_dgz]

Right angle screwdriver is the way.


https://www.amazon.com/BikeMaster-Ex...dp/B001KOAD0W/


I have a similar one and use it if I ever need to fool with a bike that hasn't got a thumbscrew, i.e. it's not mine.

[Thumper]

Do you see the lower right side of bits in this set?



The smaller ones fit into the fuel screw, and these adjustment screws have low resistence to turning them by hand. Yours is apparently on the engine side of the carb, so it is a fuel screw, not an airscrew. Counterclockwise for more fuel, clockwise for less fuel.

[ProDigit]

I have a small screw driver that fits. Also long bits fit