I have used the Racor 120 series on both the suction and pressure side. They are rated to around 7 psi and the little electric pumps on the Kubotas will not deliver more than that. If it is easier to install on the pressure side then don't hesitate. And is a good filter worth while, absolutely even on these small tractors. A IP overhaul on your Kubota is as expensive as you 400hp Cat or cummins running the same style pump. Also these tractors tend to be fueled from less than desirable containers alot of the time.
Install and be confident that you have the best protection possible for a reasonable cost.:thumbsup:
Install and be confident that you have the best protection possible for a reasonable cost.:thumbsup: