Troy-Bilt 553 Operator's Manual page 9

Remove the spindle belt guard by removing the two
self tapping screws which secure it to the blade
plate assembly. See Figure 9.
Screws
Belt
Guard
\
Spindle Sheaves
Note: Wheel and blade styles vary by model.
Figure 9
Use two wrenches (one wrench to prevent the hex
bolt head from spinning and the other to unthread
the hex lock nut) to remove the hex lock nut, bell
washer, and edger blade. See Figure 10.
Hex Bolt Head Nut
Note: Wheel styles vary by model.
Figure 10
Install the dual edger blade (part no. 781-0080), the
flat washer (part no. 736-0366), and the triplex
edger blade removed in the previous step.
Secure with the bell washer and the hex lock nut
removed earlier. See Figure 11.
Edger
Bell Washer
I
FII
Triplex Hex Nut
Figure 11
IMPORTANT: Use a torque wrench to tighten the hex
lock nut to between 37 foot-lbs, and 50 foot-lbs.
Reinstall the spindle belt guard with the self tapping
screws removed earlier.
Grasp the spindle belt guard with one hand and
push towards the rear of the unit to compress the
spring, and with your other hand carefully place the
drive belt back onto the engine flywheel pulley.
IMPORTANT: Make certain that the drive belt is seated
correctly on the blade spindle and that it is riding
smoothly on the spindle sheaves and is not pinched
between them. Repeat the first three steps if the belt is
pinched.
Set the blade adjustment lever (refer to Figure 5) in
the center notch to place the edger blade in a 90 °
position (see Figure 7) and place the blade depth
control lever in the lowest position.
IMPORTANT: For best results, proceed slowly along the
path being trenched, slowly moving the edger back and
forth through the cutting area.
NOTE: Utilizing this feature will enable you to create a
wider cutting path for such things as laying wire for
landscape lighting or invisible fences.
Edging AlongA Curb(models so
equipped)
NOTE: Edger features vary by model All edger models
do NOT come equipped to edge along a curb nor is
there a curb wheel kit available to modify your edger if it
was not purchased equipped to do so.
On models so equipped, the right, rear wheel of the
edger can be lowered into one of five positions to ease
the task of edging along a curb.
To adjust the height of the curb wheel, proceed as
follows: