Sharpening the Blade
File the top side of the blade to maintain its original cutting angle (Fig. 19A) and inner cutting edge radius (Fig. 19B). The blade will remain balanced if you remove the same amount of material from both cutting edges.
A | 1 | B | 2 |
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| 153 |
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| Figure 19 | ||
1. Sharpen at this angle only |
| 2. Maintain the original | |
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| radius here |
Balancing the Blade
1.Check the balance of the blade by placing the center hole of the blade over a nail or screwdriver shank clamped horizontally in a vise (Fig. 20).
Installing the Blade
1.Install a sharp, balanced Exmark blade, the accelerator, the lock washer, and the blade bolt. The sail of the blade must point toward the top of the lawn mower housing for proper installation. Torque the blade bolt to 50
Warning
Operating the lawn mower without the accelerator in place can cause the blade to flex, bend, or break, resulting in serious injury or death to the operator or bystanders.
Do not operate the lawn mower without the accelerator.
2.Return the lawn mower to its upright position.
3.Connect the wire to the spark plug.
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Figure 20
Note: You can also check the balance using a commercially manufactured blade balancer.
2.If either end of the blade rotates downward, file that end (not the cutting edge or the end near the cutting edge). The blade is properly balanced when neither end drops.
Cleaning under the Belt Cover
Self-propel Model only
Keep the area under the belt cover free of debris.
1.Stop the engine and wait for all moving parts to stop.
2.Disconnect the wire from the spark plug (Fig. 6).
3.Remove the bolts that secure the belt cover to the lawn mower housing (Fig. 21).
1
Figure 21
1. Belt cover
4.Lift off the cover and brush out all the debris around the belt area.
5.Install the belt cover.
6.Connect the wire to the spark plug.
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