User ManualTable of ContentsSRM-410U1Introduction2Table of Contents2Safety3Emission Control6Description7Contents9Assembly10drive shaft/power head10blade installation10u-handle installation12balance and adjust unit13optional nylon head installation14operating instructions nylon line15Operation16blade selection16fuel18starting cold engine20starting warm engine21stopping engine21Maintenance22air filter23fuel filter24spark plug24cooling system25exhaust system25lubrication28sharpening metal blades29Troubleshooting30Storage31Specifications32Size: 1.26 MBPages: 36Language: EnglishOpen manual