SECTION 7: MAINTAINING YOUR LAWN MOWER
WARNING: Be sure to disconnect and ground the spark plug wire before performing any repairs or maintenance.
Lubrication
Maintaining the Blade
•Periodically inspect the blade adapter for cracks, especially if you strike a foreign object. Replace when necessary.
Blade Control
Lubricate the pivot points on the blade control handle |
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and the brake cable at least once a season with light oil. |
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See Figure 17. The blade control must operate freely in | • | |
both directions. | ||
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Rear Discharge Door
The torsion springs and pivot points should be
lubricated periodically with light oil to prevent any rust • or binding. Door must work freely.
Wheels:
The wheels require no lubrication. However, if the wheels are removed for any reason, lubricate the surface of the axle bolt and the inner surface of the wheel with light oil. Engine oil may also be used.
Engine | • |
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Follow engine manual for lubrication instructions.
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LUBE |
LUBE
WARNING: When removing the cutting blade for sharpening or replacement, protect hands by using heavy gloves or a rag to grasp the cutting blade.
Remove the bolt and bell support which hold the blade and adapter to the engine crankshaft. See Figure 18. Remove the blade and adapter from the crankshaft.
When sharpening the blade, follow the original angle of grind as a guide. It is extremely important that each cutting edge receive an equal amount of grinding to prevent an unbalanced blade. An unbalanced blade will cause excessive vibration when rotating at high speeds, and may cause damage to the mower and/or personal injury.
The blade can be tested by balancing it on a round shaft screwdriver. Remove metal from the heavy side until it balances evenly. It is recommended that the blade always be removed from the adapter for the best test of balance.
Before reassembling the blade and the blade adapter to the unit, lubricate the engine crankshaft and the inner surface of the blade adapter with light oil (or engine oil). Lubricating the bolt holes, bolts and inner surface of the nuts is also recommended.
Crankshaft
LUBE |
| Blade |
| Adapter | |
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| Blade |
| LUBE | Bell |
| Support | |
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| Hex Bolt |
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| Figure 18 |
L |
| • Install the blade adapter on the crankshaft with the |
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U |
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B |
| “star” away from the engine. Place the blade with |
E |
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| the side marked bottom (or with part number) facing |
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| away from the adapter. Align the blade bell support |
Figure 17 |
| over the blade with the tabs in the holes of the |
| blade and insert the hex bolt. Tighten the hex bolt to | |
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| the torque listed here. |
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