Toro 20351 Quality Guide - Page 18

Checking and Adjusting the Blade Level Steel deck models (Toro Recyclers and Lawn-Boy Silver Series) use spring arms and pins to engage notches in a plate bolted to the mower housing (Figure 11). Checking Blade Level- All Mowers Checking the blade level involves preparing a suitable workspace and measuring the distance from one of the blade tips to a level flat surface at the 12, 3, 6, and 9 o'clock positions. Figure 11 MVC-402X.jpg Some models (43cm and 48cm models sold in Europe) use a single lever height of cut system (Figure 12). Preparing the Workspace Use a straight edge to verify that the workspace is flat. Do not assume the floor is flat even if it appears to be so. You will make measurements with a tolerance of less than 3/16 inch (5mm) (Figure 13). A small dip in a concrete floor may cause you hours of work trying to find a problem that isn't there. Figure 12 P2260003.JPG Riding Mower Overview Each series of riding mower has it's own method of suspending the mower assembly. For checking and adjusting the blade tracking, height of cut, side-to-side level, and front-to-rear pitch on a given riding mower, see the subsection that discusses the appropriate series of riding mower. Figure 13 MVC-715X.JPG For smaller product a 4 by 8 foot sheet of 3/4 inch plywood laid on the floor may assure you of a relatively flat surface. It is rigid enough to give you a good surface to measure from and will serve you for all mowers up to 48 inches wide and with a wheel base less than about 84 inches. For larger machines you may need to find a larger level area to verify the blades are at the correct level. 4 - 2 Service Dealer's Guide to Great Quality of Cut