n Be sure to check the following before using your trimmer.Item to be checked Response1 Trimming mechanism • See if attachment is loose • Tighten screws and bolts• Gaps between blades • Adjust blades (see p.14)• Check if edges of blades are dull • Sharpen or replace blades2 Throttle • Stiff and difficult to move • Repair or replace3 Throttle wire • Too loose, too tight • Adjust (see p.11)• Stiff and difficult to move • Repair or replace4 Engine attachment • See if fittings are loose • Tighten fittings5 Fuel tank • See if attachment is loose • Tighten screws and bolts• See if fuel pipe is damaged • Replace• See if cap packing is damaged • Replace6 Muffler • See if attachment is loose • Tighten screws and boltsn Regular maintenance inspectionCheck the trimmer for damage or problems at the intervals shown below.Maintenance• Always be sure to stop the engine before inspecting the trimmer for problems orperforming maintenance.• Never alter the trimmer or take the engine apart.• When replacing parts, always be sure to use only ZENOAH products or products whichhave been certified by ZENOAH for use with the RedMax trimmer.• Things to check before using trimmerWARNINGInterval (number of hours)Item to be checked 20 25 50 100 CommentsEngineRemove grit from cylinder fins √Clean air filter element √Clean and adjust spark plugs √ distance of 0.25"Clean fuel tank √Tighten cylinder bolts √Tighten engine fittings √Decarbonize muffler √Main bodyLubricate gear case √Remove grit from clutch drums √13