25
Regular Maintenance
CHECK MOWER BLADE TIMING -
40” MOWERS
Service Interval: Yearly
1. Turn the PTO to the off position, 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 perpen-
dicular to each other as shown in Figure 20. If not,
proceed to step 3.
3. Use a block of wood (B, Figure 19) to prevent blade
rotation while loosening the capscrew.
4. Remove the capscrew (A), spring washer (F), and
spline washer (G).
5. Remove the alignment pin (E). Rotate the blade (D)
manually until the blades are perpendicular to each
other as shown in Figure 20. 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) to prevent blade rotation while tightening
the capscrew (A) to 61-75 N.m (45-55 ft. lbs.).
Figure 20. Check Blade Timing
A
B
C
D E
G
F
A
Figure 19. Blade Installation & Hardware
A. Blade Mounting Capscrew
B. 4x4 Wood Block
C. Blade Adapter
D. Blade
E. Alignment Pin
F. Spring Washer
G. Spline Washer
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