1999 Polaris SLH, SLTH, SLX, SLTX, PRO785 Factory Service Manual, Page 253Get this manual
FINAL DRIVEJET PUMPBILGE SYSTEM Pump Alignment Inspection Pump Alignment Inspection, Cont
Symptoms
Splines worn or stripped at engine coupler end of drive shaft or inside of coupler; through-hull fitting failure or rapid wear of bushings in bearing housingSplines worn or stripped at impeller end of drive shaft or inside impeller
Probable Cause
Engine misaligned to pump Loose or broken engine mounts Engine loose on mount plate
Repair Required
Shim engine mounts Tighten or replace mounts Tighten engine to mounting plate bolts
Pump mounting bolts loose Pump misaligned with hull (check for gap between hull and pump housing as shown on Page .27)
Remove, re-seal, and install pumpTorque fastenersDetermine cause of pump to hull misalignment: -Pump mounting studs installed incorrectly-Hull damage from over tightened or incorrectly installed studs-Scoop improperly installed (Remove and re-install inlet scoop)Ride plate should be flush with bottom of hull
Excessive drive line vibration
Drive shaft runout excessive Loose or broken engine mounts Engine loose on mount plate Pump-to-hull or engine-to-pump alignment incorrect