Husqvarna L221A Owner Manual - Page 22

MAINTENANCE Blade WARNING! Always wear heavy-duty ! gloves when servicing and maintaining the blade.The blade is very sharp and cuts can occur very easily. Always stop the engine before doing any work on the blade.This continues to rotate even after the throttle has been released. Ensure that the blade has stopped completely and disconnect the spark plug cap before you start to work on it. Replacing the blades 1 Always disconnect the spark plug before performing maintenance or service. 2 Always empty the fuel tank before you place the lawn mower on its side. Empty the fuel tank by running the machine until the tank is empty. 3 Turn lawn mower on its side. When the machine is tilted, make sure the air filter always is placed in the highest position. • Check the blade for cracks or any other damage. A damaged blade must always be replaced. • Always ensure the blade is well ground and balanced correctly. To check blade balance, you will need a 5/8" diameter steel bolt, pin, or a cone balancer. When using a cone balancer, follow the instructions supplied with balancer. • Do not use a nail for balancing blade. The lobes of the center hole may appear to be centered, but are not. • Slide blade on to an unthreaded portion of the steel bolt or pin and hold the bolt or pin parallel with the ground. If blade is balanced, it should remain in a horizontal position. If either end of the blade moves downward, sharpen the heavy end until the blade is balanced. 4 Use a wood block between blade and mower housing to prevent blade from turning when removing blade bolt. IMPORTANT! The blades should be balanced after sharpening. We do not recommend sharpening blade. Sharpening and balancing the blade should be conducted by an authorized service workshop. Damaged blades should be replaced immediately. NEVER use a mower with a damaged blade. 5 Remove the blade bolt by turning the bolt counterclockwise. 6 Remove the old blade. Make sure the blade adapter is free of damage. Also check that the blade bolt is undamaged and that the engine shaft is not bent. IMPORTANT! Use only a replacement blade approved by the manufacturer of your mower. Using a blade not approved by the manufacturer of your mower is hazardous, could damage your mower and void your warranty. 22 - English