1999 Polaris SLH, SLTH, SLX, SLTX, PRO785 Factory Service Manual, Page 66Get this manual
MAINTENANCErrUNE UP Troubleshooting Engine OverheatingMiscSymptoms: Engine overheats Cooling water passages in pump restricted (check screen and passages) Impeller or pump housing damage Pump housing passage plugs missing Thermostatpopoff valve restricted Cooling water passages in engine restricted with sand or debris Loose or damaged cooling hoses or clamps Collapsed exhaust hose or pipe (restricted)
Symptoms: Hard starting (engine turns over with electric starter but engine won't start)
Out of fuel Low compression Weak spark or no spark (see ignition troubleshooting) Lean mixture (see lean mixture troubleshooting) Choke inoperative or not closing completely Fouled spark plug(s} Water in fuel Wornbroken or cracked reeds Restricted or plugged low speedidle passages
Symptoms: Low compression Choke or throttle closed (both must be wide open for test) Loose cylinder head or head gasket failure Rings stuck or broken, or excessive end gap Piston damage (see piston damage) Cylinder worn, improperly honed or bored, damaged