2001 Polaris SLX, PRO 1200, Virage TX, Genesis, Virage TXi, Genesis i Personal Watercraft Service Manual, Page 251Get this manual
HullControl Systems Speedometer Operation Adjustment
The speedometer is operated by water pressureThe pressure is supplied to the back of the speedometer through hose connected to fitting located inside the jet pump intake grate area1If the speedometer becomes inoperative first check hose for kinks or restrictionsCheck to see that it is connected properly to fitting and to back of speedometerThe fitting must be aligned with the pump intake grate to read accuratelyOccasionally foreign debris such as grass or weeds will lodge in the fitting or lineTo clear hose and fitting, disconnect hose from speedometer and apply low pressure air to hoseTo test speedometer unit, connect aMity Vac to the fitting on the speedometerApply pressure and compare the reading to the table belowRe-connect line and test for proper operation