Craftsman 247.77012 Operator's Manual page 18

Warning
Before performing any type of maintenance on the machine, wait for
all parts to stop moving and disconnect the spark plug wire. Failure
to follow this instruction could result in personal injury or property
damage.
reMOVing THe FLaiL SCreen
If the discharge area becomes clogged, remove the flail screen and
clean area as follows:
1. Stop the engine. Make certain the chipper/shredder vacuum has
come to a complete stop.
2. Before unclogging the discharge chute, disconnect and ground
the spark plug wire to retaining post.
3. Remove the vacuum bag or blower chute from the unit as
instructed in the OPERATION section to obtain access to flail
screen.
4. Remove self tapping screw on right side of unit that attaches to
the flail screen. See Figure 14.
5. Remove hex screw on top of rear housing near mounting bracket
and the flange lock nut that secures flail screen. See Figure 14.
6. Remove and clean the screen by scraping or washing with water.
See Figure 15.
7. Reinstall the screen.
SERVICE AND MAINTENANCE
1
Figure 14
Figure 15