Jerry, if you don't have a manual with the info and don't find the adjustment you might call the manufacturer. They may send you a whole new water valve. There were some folks on this forum who had a problem with little water pressure and I think they were given a new valve, no charge.
See another Montana or Mountaineer on the road? Flash lights twice, it might be one of us!
Steve Reigle (pronounced Regal)
Fulltiming since 3/21/03
'03 3295RK
'05 Ford F250 SD Lariat CC SB 6.0L PSD/TS FX4 4x4
Our RV Travels (now Firefox-compatible)