1978 Polaris RXL Service Manual, Page 21Get this manual
COl IMING
Capacitor Discharge Ignit io n:On the EC34PL-03 engine with CD ign ition, ea ch spark plug fires twice per revolution of the crank shaft (each 18 00 of cranksha ft rotationfiring occurs just
before TOe and BOC of each engine revolution)
The spark advance mec hanis is controlled elec trically, th erefore, he re is no ca on th flywheelnor an governo weights in th flywh eelBecause both spark plugs fire at th same tim it is nly nec essary time one he two cy lind ers and it foll ows that he remaining one must be he sam eA strobe light is needed to ime engines with CD ign it ionUse strobe light that ca withsta nd high CO vo ltageTh EC34PL-Q3 engine is ti med in the full adva nce po sit ion with the engine ru nning at 4000 RPMDo not exceed 4000 RPM wh en hec ing engine timingExceeding 4000 RPM will result in al se read ing