hey joe change the waterpump o
hey joe change the waterpump on my 20hp johnson pumeps good at idle gets to full trottle seems to slow down pumping but pumps alittle better now change evey thing i know checked everything could idrill the water plate holes bigger?
i just bought a 1971 20hp 20r7
i just bought a 1971 20hp 20r71f johnson runs great but quits pumping water when it gets to full thottle but pumps at idel speed could this mean i need a new waterpump