Troy-Bilt Smart Speed 566 Operator's Manual page 13

BladeControl
• Lubricate the pivot points on the blade control
handle and the brake cable at least once a season
with a light oil. It needs to move in both directions.
Engine
• Follow the engine manual instructions and
recommended schedule for lubricating engine
components.
BladeCare
• Periodically inspect the blade adapter and pulley
for cracks, especially if you strike a foreign object.
Replace when necessary.
WARNING: When removing the cutting
blade for sharpening or replacement, protect
hands by using heavy gloves or a thick rag to
grasp the cutting blade.
1. Disconnect spark plug wire from spark plug.
2. Turn mower on its side making sure that the air filter
and the carburetor are up.
3. Remove the hex bolt which holds the blade
adapter-pulley assembly to the engine crankshaft.
See Figure 12. Remove the pulley assembly and
the bell support from the crankshaft.
4. Remove blade from the blade adapter and pulley.
Blade
Adapter-Pulley
Assembly
Blade Bell
Support
Hex Bolt
Figure 12
5. Before reinstalling the blade-pulley assembly to the
unit, lubricate the engine crankshaft and the inner
surface of the blade adapter with light oil.
6. Also lubricate the bolt hole and the hex bolt.
7. Insert the hex bolt, earlier removed, through the
center holes on the blade bell support and the
blade adapter-pulley assembly respectively.
8. Install the blade assembly on the crankshaft.
Tighten the hex bolt to the recommended torque.
Blade Mounting Torque:
Center bolt: 450 in.lbs, minimum, 600
in.lbs, maximum.
IMPORTANT: The bolt used to secure the blade to the
engine is specially heat-treated. Do not substitute. To
order replacement bolt, refer to page 17.
WARNING:
To ensure safe operation of
your unit, all nuts and bolts must be checked
periodically for correct tightness.
9. Sharpen the blade with a file or on a grinding wheel.
Do not attempt to sharpen the blade while it is still
on the mower.
10. Follow the original angle of grind as a guide. Make
sure that each cutting edge receives an equal
amount of grinding to prevent an unbalanced blade.
NOTE: An unbalanced blade will cause excessive
vibration when rotating at high speeds, may cause
damage to the mower and could break, causing
personal injury. Test the blade by balancing it on a
round shaft screwdriver or a blade balance/'.
11. If the blade is not balanced, remove metal from the
heavy side until it balances evenly.
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