Change pull cord

Hello sir, ryobi trimmers and other models removal of the bell housing,removal of the metal bell housing,or clutch drum, on models 780R & 790R, here is what you do. after removing the trimmer & shaft assembly.remove the spark plug insert a screwdriver in the cylinder to keep piston from moveing. to remove the bell housing twist off the spring and using a T20 TORX screwdriver unscrew the retaining screw in the center of the bell housing (normal r/h thread) . push down firmely try not to strip screw head . you should be able to remove clutch housing.remove clutch using a pair of channel locks,works for me, (normal r/h thread) you should be able to remove front engine cover to repair what you need to.coil,pull stsrt, hope this works,. this solution applies to all trimmers with clutch removal~~~hope this helps,,any comments welcome,thank you. 11