Simplicity 300 Series manual Check Mower Blade Timing 40 Mowers, Check Blade Timing

Check Mower Blade Timing - 40” Mowers

Service Interval: Yearly

1.Turn the PTO OFF, engage the parking brake, turn the engine off, and remove the key. Remove the mower deck (see “Mower deck removal”).

2.Turn the mower deck over and check the position of the blades. The blades must be positioned perpendicular to each other as shown in Figure 28. If not, proceed to step 3.

3.Use a block of wood (B, Figure 24) to prevent blade rotation while loosening the capscrew.

4.Remove the capscrew (A, Figure 27), spring washer (F), and spline washer (G).

5.Remove the alignment pin (E, Figure 27). Rotate the blade (D) manually until the blades are perpendicular to each other as shown in Figure 28. It may be necessary to remove and rotate the blade adapter

(C) to align the blade hole and adapter hole.

6.Reinstall the alignment pin (E), spline washer (G), spring washer (F) and capscrew (A). Use a wooden block (B, Figure 27) to prevent blade rotation while tightening the capscrew (A) to 61-75 N.m (45-55 ft. lbs.).

Regular Maintenance

B	C	D	E
			G
			F
			A
A

Figure 27. Blade Installation - 40” Mowers

A.Blade Mounting Capscrew

B.4x4 Wood Block

C.Blade Adapter

D.Blade

E.Alignment Pin

F.Spring Washer

G.Spline Washer

Figure 28. Check Blade Timing

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