anyone know just how much air pressure to put into a Z 131? I have been pumping it up to 'hard' with a foot pump. Do I need more? and just how would you check the pressure anyhow, with that type of fill valve?
Hi,
it seems that there is an inherent problem with leaky fill valves on this unit. (1993) I have replaced the valves and they still leak. Bad design.:mad: Is there a fix for these valves? Can the rubber be softened? Any help would be appreciated.
