Husqvarna LB 548i Operator's Manual page 26

To replace the blade
1. Lock the blade with a block of wood.
2. Remove the blade bolt, the spring washer and the
blade.
3. Examine the blade support and blade bolt for
damages.
a) If you replace the blade or the blade support,
also replace the blade bolt, the spring washer
and the friction washer.
4. Examine the motor shaft to make sure that it is not
bent.
5. When you attach the new blade, make sure that the
bent ends point in the direction of the cutting cover.
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6. Put the friction washer and the blade against the
blade support.
7. Make sure that the blade aligns with the center of the
motor shaft.
8. Lock the blade with a block of wood.
9. Attach the spring washer and tighten the bolt with a
torque of 65-75 Nm.
10. Pull the blade around by hand and make sure that it
turns freely.
WARNING:
The blade is very sharp and cuts can
easily occur.
Use protective gloves.
1630 - 004 -