While you wait for answers, we may have found some information which could help you.
Click here for Kubota Fuel Goingi have a kubota r320s and the shut off solenoid wont work?
kubota 2350 won't start?
kubota f1900 mower?
kubota b2400 wont start?
MY Kubota R420 seems to move slower going up hills or when pulling?
Kubota Tractor L4330?