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Starting the Engine (single cylinder GX models) Engine Che ck t he fuel and engine oil l ev e l be fore s t a r t ing the en gine . Turn the fuel valve lever Turn the engine switch to the ON position.
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Quick Reference Guide Quick Reference Guide for Operation GX120-GX390 GX120-GX390 *Read and understand the Owner’s Manual before operating the engine. *Read and understand the Owner Safety! be careful! Safety! be careful! Do not use inside house Do not use inside house Safety! Be careful! Safety! Be careful! How to stop...
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Quick Reference Guide Quick Reference Guide for Maintenance GX120-GX390 GX120-GX390 *Read and understand the Owner’s Manual before operating the engine. *Read and understand the Owner Maintenance Schedule Maintenance Schedule Spark Plug Spark Plug Engine Oil Engine Oil Prolonged storage Regular service Every Every Every...