Craftsman 107.289920 Mower Deck Leveling Adjustments, Side to Side Leveling, Trunnion Jam Nuts

MOWER DECK LEVELING

ADJUSTMENTS

WARNING

Before adjusting the mower, turn the mower blades OFF, turn the ignition switch OFF, remove the key, and allow all moving parts to stop. Disconnect the spark plug wire and fasten it away from the spark plug.

Side to Side Leveling

If the cut is uneven, the mower may need leveling.

Unequal or improper tire pressure may also cause an uneven cut. See CHECK TIRE PRESSURE.

1.With the mower installed, place the rider on a smooth, level surface such as a concrete floor. Turn the front wheels straight forward. Turn the engine off, set the ground speed control levers to PARK, and wait for all moving parts to stop.

2.Check for bent blades and replace if necessary.

3.Check the tire pressures. See CHECK TIRE PRES- SURE.

4.Set the cutting height to mid position. Arrange the mower blades so that they are pointing from side-to- side (Figures 39 & 40).

5.Measure the distance between the tips of the outside blades and the ground (Figure 40). If there is more than 1/8" (3 mm) difference between the measure- ments on each side, proceed to Step 6. If the differ- ence is 1/8" (3 mm) or less, proceed to Front To Back Leveling.

6.Side-to-side leveling is accomplished using the threaded rods (A, Figure 41) and trunnion (B) on the right and left rear sides of the mower deck. Loosen the jam nuts (C) and adjust the nuts up or down to adjust the mower level. When complete, tighten the jam nuts against the trunnion to lock the adjustment in place.

Figure 39. Orient Blades Side-to-Side

Figure 40. Measure Blade Tips to Ground

A. Mower Deck

B.Blade Tip

C.Level Ground

J

Figure 41. Side-to-Side Leveling

A. Threaded Rod

B.Trunnion

C.Jam Nuts

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