Simplicity 300 Series manual Servicing the Mower Blades, Regular Maintenance

Regular Maintenance

WARNING

For your personal safety, do not handle the sharp mower blades with bare hands. Careless or improper handling of blades may result in serious injury.

WARNING

For your personal safety, blade mounting capscrews must each be installed with a hex/spline washer and spring washer, then securely tightened. Torque blade mounting capscrew to 45 - 55 ft. lbs. (61 - 75 N.m.)

LOOSEN

Figure 24. Blade Removal

Servicing the Mower Blades

Service Interval: Every 100 Hours or As Required

NOTE: Mower blades must be timed perpendicular to each other.

1.Remove mower deck (see “Mower Deck Removal”).

2.See Figure 24. To remove blade for sharpening, use a block of wood to prevent blade rotation while loosening the capscrew.

3.38”, 44”, & 50” Mowers: Remove the capscrew (D, Figure 25), spring washer (C), hex washer (B), and blade.

40” Mowers: Remove the capscrew (A, Figure 27), spring washer (F), spline washer (G), alignment pin

(E)and blade (D). Do not remove the blade adapter

4.Use a file to sharpen blade to a fine edge. If blade is damaged, it must be replaced.

5.Balance the blade as shown in Figure 25. Center the blade’s hole on a nail lubricated with a drop of oil. A balanced blade will remain level.

6.Reinstall the blade (Figures 26) with the tabs pointing up toward the mower deck as shown. Reinstall the alignment pin (E).

7.38”, 44”, & 50” Mowers: Reinstall the hex washer (B, Figure 26), spring washer (C) and capscrew (D). Use a wooden block (A) to prevent blade rotation while tightening the capscrew (D) to 61-75 N.m (45- 55 ft. lbs.).

40” Mowers: Be sure the blades are positioned perpendicular to each other as shown in Figure 37. If not, perform the Mower Blade Timing procedure found in this section. Reinstall the spline washer (G, Figure 27), spring washer (F) and capscrew (A). Use a wooden block (B) to prevent blade rotation while tightening the capscrew (A) to 61-75 N.m (45-55 ft. lbs.).

Workbench

Nail

Figure 25. Balancing The Blade

B

C

D

A

Figure 26. Blade Installation - 38”, 44”, 50” Mowers

A.4x4 Wood Block

B.Hex Washer

C.Spring Washer

D.Blade Bolt

28