A quick run down is that you need to get it up in the air or if not possible you need to drain the fuel andoil so you can tip up carefully onto it's handlebars and if it's time for a new belt its a good time to do an oil change anyway. But lets go on first you simply need to remove the old belt easiest way is to cut it using a pair of diagonal cutter pliers or even a sharp ginsu knife but be careful. Then all is needed is to first get one end of the belt through the pulley and brake pad on the mower ball end it's not too hard just look at it and the belt will slide between the brake shoe and into the pulley groove just make sure its also inside of the two belt guiding pins so it wont jump off, then go to the engine pulley and simply slide the belt over the pulley and into the grove and last which isn't hard but just watch you fingers is to make sure the idler pulley that engages the cutting ball is on the outside edge of the belt so that when you push the belt lever forward it will tighten the belt by pushing in on it ounce that is done and double checked it's done if you have any issues such as slipping or the ball continuing to spin that can be fixed by adjusting the belt engagement cable bracket which is also on the under side basicaly you want to loosen the cable an 1/8" at a time if it's continues to spin even when your not engaging the handle until it no longer spins like that or if it stops spinning when you get into heavy grass it may need to be tighten an 1/8 of an inch at a time to get more tension on the engaging pulley to keep the belt tight. Hope this helps some.
Tom Kehoe, August 2009
