1999 Polaris SLH, SLTH, SLX, SLTX, PRO785 Factory Service Manual, Page 67Get this manual
MAINTENANCEITUNE UP TroubleshootingElectricalFinal Drive Electrical
NOTE: yellow color may develop on spark plugs over time due to salt water mist ingestionThis is conductive coating which will eventually cause foulingSymptoms: No spark or weak spark on one cylinder
Non-resistor spark plugs in use Poor connection (spark plug cap to high tension lead) Poor connection (high tension lead to ignition coil) Fouled spark plug Faulty spark plug cap Poor grounds or connections in electrical box Faulty ignition coil Poor connections to Hall Effect sensors (trigger) Faulty Hall Effect sensor (trigger)
Symptoms: No spark or weakintermittent spark on all cylinders
Non-resistor spark plugs in use Fouled spark plug
Engine stop switch faulty (shorted) Low battery voltagecrank speed too low with spark plugs installed Wiring incorrect or disconnected Terminal board or connectors corroded
Poor grounds or connections in electrical box or at engine mount plate Poor connections at primary winding of secondary coil (blkblk-white on Polaris-Fuji engines) Faulty ignition coil Faulty exciter coil, trigger, or pulser coil (test stator)