Toro 20351 Quality Guide - Page 24

Checking and Adjusting the Blade Level Riding Mowers Each series of riding mower uses different cutting units with unique suspension systems. Because of that, look for the type of riding mower you have and read the section that applies. IMPORTANT: perform all the steps under "Checking Blade Level-All Mowers" before beginning to measure. 825 Rear Engine Rider The 825 Rear Engine Rider has no provision for normal adjustment of side-to-side level or front-to-rear pitch (Figure 29). Adjusting Blade Tracking The blade should be a minimum of 1/8 inch (3.1mm) above the bottom of the housing. If out of tolerance, insert a washer or other shim between the spindle housing and mower housing (Figure 30). Re-measure the blade side to side. If now correct, remove the spindle housing bolt and re-install through the housing, shim, and spindle. Note that the blade tip will move more than the thickness of the shim. Figure 30 MVC-732X.JPG Figure 29 1222-01.TIF Adjusting Side-to-Side Level If the mower is more than 1/8 inch (3.1mm) off side to side, correction is recommended. Since this is not a normal adjustment, there is a possibility the deck suspension is badly worn or bent. Replace the parts as necessary. 32-inch Rear Engine Rider The 32-inch Rear Engine Rider has been built with various engines. However, all use the same mower attachment and suspension (Figure 31). Adjusting Front-to-Rear Pitch The blade should be 7/16 inch (10.9mm) lower when it passes the front of the mower than when it passes the rear. This measurement can be between 1/8 inch (3.1mm) and 1/2 inch (12.7mm) low in front. If the difference is out of this range, the mower suspension is either worn or bent. Straighten or replace as needed. Figure 31 1222-05.TIF 4 - 8 Service Dealer's Guide to Great Quality of Cut