Toro 303447 - Troubleshooting: Timing and Spark; Engine Timing Importance; Spark Plug Issues and Testing

AfterFuel,AirandCompression,thenextitemtolookat
isTimingandtheSpartk.
TIMING–Thesparkmustoccuratthecorrectpointinthe
enginecyclefortheenginetooperateproperly.
Mostoftenthisisaffectedbyabadflywheelkey.
Spark‐‐Mostoftenaff ectedbyabadsparkplug.
Removethe sparkplugandcheckfordeposits.Thesecan
becleanedwithawirebrush.
Thegapofthesparkplugcanalsobeafactor.Thegap
shouldbesetasrecommendedbythemanufacture”.
Ifthegapiscorrect,
thencheckthesparkoutput.