In Reply to: Fuel shut off valve......Silly question posted by Dead Eye Dave on June 17, 2017 at 12:27:09:
I learned after losing one knob while working in the field all day and once back at the barn noticed it was missing. That's when I bought anew valve stem with knob and screw and put dab of Loctite on the screw. I do this on all sediment bulbs when I work on them. The screw is standard round head machine screw, size 8-32 with a star washer. New valve stems are sold separately for less than $10. Like I stated, a dab of LOCTITE thread sealant will ensure you never lose another knob.