Toro 303447 - Engine Cycle Types and Characteristics; Four-Cycle Engine Characteristics

Therearesomespecificcharacteristicsrelatedtoafour
cycleengine
Twocompleterevolutionsofthecrankshaftpercycle
resultsinapowerimpulseeveryotherrevolution.
Theseenginesaremorepopularthan2cycle
Theydorequiremorepartsthat2cycle.
Lessexhaustemissionsthan2cycle.
Typicallubricationsystemrestrictsangleofoperationdue
toeithersplashlubefromthesump,orpressure
lubricated,pullingoilfromthesump.
Theyarealsonormallymoredurablethan2cycle.