Cub Cadet

[doc623]

Have an older cub cadetHad the engine replaced several years ago.
Has a v17hp Kohler engine now.
Sat most of last summer and winter.
Carb was varnished up - could smell it.
Used Barryman's cleaner - good so far.
Replaced the inline fuel filter.
Fuel not getting to the carb.
Noticed a small part - rectangular with an in and out port that is in the fuel line between the fuel filter and the carb.
Took it off to inspect and clean - sits on the engine below the carb. has two small button gismos which have a flat rubber waffer in side with a spring also in there behind the waffer.
What is it?
Who do I check/clean?
Do I need to replace if so where do I find parts and schematics.
What is its purpose?
Thanks.

[retire2$]

That is a fuel pump. Replace the rubber diaphram.

[Jim S.]

On your CC, you'll likely have to replace the whole fuel pump. They are not too high. I'd do it just as a preventative. Leaky diaphragms can fuel-foul the oil. The fuel pump on V-twin Kohlers is located atop the valve cover, and works off the overhead cam.

Also, if you have the V-twin (not the horizontally opposed pancake engine), there is a fuel shutoff solenoid in the carb. It has a wire running to it. This is most likely your problem.

1.) That wire must get juice the whole time the ignition is on and the engine is starting or running. Turn the key to On and listen for the solenoid click to be sure.

2.) The carb passages controlled by the solenoid must be clear.

The device closes a needle to shut off the gas whenever the engine is shut off.

[doc623]

Jim S.
Before I replace the fuel pump which I'll probably end up doing; the check valves inside the top of the fuel pump cover - are the both to have the wafer down toward the pump or is one to be up and one to be down and if so which the inlet up/down and the outlet side up/down.
Thanks in advance.