Toro 3000D manual Inspecting and Sharpening Blade

Inspecting and Sharpening Blade

1.Lock transport levers, raise cutting unit to highest position, shut the engine off and engage the parking brake.

2.Examine cutting ends of the blade carefully, espe- cially where the flat and curved parts of the blade meet (Fig. 21–A). Since sand and abrasive material can wear away the metal that connects the flat and curved parts of the blade, check the blade before using the machine. If wear is noticed (Fig. 21–B), replace the blade: refer to Removing Cutter Blade.

DANGER

If blade is allowed to wear, a slot will form between the sail and flat part of the blade (Fig. 21–C). Eventually a piece of the blade may break off and be thrown from under the housing, possibly resulting in serious injury to yourself or bystander.

3.Inspect cutting edges of all blades. Sharpen the cut- ting edges if they are dull or nicked. Sharpen only the top of the cutting edge and maintain the original cutting angle for best performance (Fig. 22). The blade will re- main balanced if same amount of metal is removed from both cutting edges.

4.To check blade for being straight and parallel, lay blade on a level surface and check its ends. Ends of blade must be slightly lower than the center, and cutting edge must be lower than the heel of the blade. This blade will produce good quality of cut and require mini- mal power from the engine. By contrast a blade that is higher at the ends than the center, or if cutting edge is higher than the heel, the blade is bent or warped and must be replaced.

5.Install blade retainer, blade (sail facing (up) toward cutting unit) with anti–scalp cup and blade bolt. Tighten blade bolt to 85–110 ft–lb (12 – 15 Kgm).

Figure 21

SHARPEN AT THIS

ANGLE ONLY

END VIEW

Figure 22

Contour 82 Cutting Unit

Groundsmaster 3000/3000–D Page 10 – 13 Contour 82 Cutting Unit