Toro 20351 Quality Guide - Page 17

Checking and Adjusting the Blade Level Overview This section describes how to check and adjust the blade level on consumer walk behind mowers and riding mowers. Four factors determine proper blade level: • Blade tracking-blade tips staying in a single plane of rotation as they turn • Height of cut-height of blade above level surface • Side-to-side level-each blade tip at the same height above a level surface when measured on either side of the mower • Front-to-rear pitch-angle of blade when one tip points to the front of the mower and the other to the rear Some of the procedures for checking and adjusting blade level are common to all mowers. Some apply to walk behind mowers with a given type of height of cut system. Generally, each riding mower model has its own specific height of cut, side-to-side, and front-to-rear pitch adjustment procedures. If you have a walk behind mower, see the following subsections for blade level adjustment procedures: • Walk Behind Mower Overview • Checking Blade Level-All Mowers • Checking and Adjusting Blade Tracking: Walk Behind Mowers • Adjusting Blade Level: Walk Behind Mowers: Models with Height of Cut Lever on Each Wheel Models with Single Height of Cut Adjustment Lever If you have a riding mower, see the following subsections for blade level adjustment procedures: • Riding Mower Overview • Checking Blade Level-All Mowers • Adjusting Blade Level: Riding Mowers and subsections specific to adjusting your model Walk Behind Mower Overview The method for checking and adjusting blade tracking is the same for all walk behind mowers. The method for checking and adjusting the height of cut, side-to-side level, and front-to-rear pitch depends on the height of cut system on the mower. There are three height of cut systems used on consumer walk behind mowers. For checking and adjusting the height of cut, side-to-side level, and front-to-rear pitch on a given mower, see the subsection that discusses the height of cut system used on the mower. Cast deck models (Toro Super Recycler and Lawn-Boy Gold Series) use notches cast into the mower housing (Figure 10) and spring arms and pins to engage those notches. Figure 10 P2260001.JPG Service Dealer's Guide to Great Quality of Cut 4 - 1