Craftsman 247.77013.0 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.
DRIVE CONTROL CABLE ADJUSTMENT
Adjust the drive control cable if the yard vacuum does not self propel
with the drive control engaged, or if the unit hesitates while the engine
maintains the same speed after approximately 20 hours of use.
To move the z-fitting of the drive control cable from its factory set
position in the front hole of the drive control to the rear hole, proceed
as follows:
1. Push the right side of the control out of the right hole in the upper
handle. See Figure 18A.
2. Pivot control down towards the lower handle.
3. Pivot straight up to remove it from the left hole in the upper
handle. See Figure 18A.
4. There is now sufficient slack in the drive control cable to grasp the
z-fitting with your hand and move it from the front hole to the rear
hole of the drive control. See Figure 18B.
IMPORTANT: Make sure to insert the z-fitting into the rear hole as
it was inserted in the front hole, that is from the outside of the drive
control.
5. You may now carefully reinstall the drive control by performing the
previous steps in the opposite order and manner of removal.
IMPORTANT: Once assembled and prior to restarting, make sure that
the cable is properly adjusted. With the drive control disengaged, the
unit should freely pull in reverse.
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,
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 the three self tapping screws securing the belt cover, and
remove belt cover. See Figure 19.
SERVICE AND MAINTENANCE
disconnect and ground
A
B
18
1
2
3
Figure 18
Figure 19