Husqvarna 129RJ Operator's Manual page 11

Correct height
Adjust the harness so that the cutting attachment
is parallel to the ground.
Correct balance
Let the cutting attachment rest lightly on the
ground. If you use a grass blade, it should balance
about 10 centimeters (4 inches) above the ground
to prevent contact with stones and the like. Adjust
the position of the harness clamp to balance the
unit correctly.
Fitting blades and trimmer heads
• When fitting the cutting attachment it is
extremely important that the raised section on
the drive disc/support flange engages correctly
in the center hole of the cutting attachment. If
the cutting attachment is fitted incorrectly it can
result in serious and/or fatal personal injury.
WARNING: Never use a cutting
attachment without an approved guard.
See the "TECHNICAL DATA" section. If an
incorrect or faulty guard is fitted this can
cause serious personal injury.
IMPORTANT: If a grass blade is to be used, the
machine must be equipped with the correct
handlebar, blade guard and harness.
ASSEMBLY
Fitting a blade guard, grass blade and
grass cutter
1. Hook the blade guard/combination guard (A)
onto the fitting on the shaft and secure with the
bolt.
CAUTION! Use the recommended blade guard.
See the Technical data section.
2. Fit the drive disc (B) on the output shaft.
3. Turn the blade shaft until one of the holes in
the drive disc aligns with the corresponding
hole in the gear housing.
4. Insert the locking pin (C) in the hole to lock the
shaft.
5. Place the blade (D), support cup (E) and
support flange (F) on the output shaft.
6. Fit the nut (G). The nut must be tightened to a
torque of 35-50 Nm (3.5-5 kpm). Use the
socket wrench in the tool kit. Hold the shaft of
the wrench as close to the blade guard as
possible. To tighten the nut, turn the wrench in
the opposite direction to the direction of rotation
(NOTE: left-hand thread).
Fitting the trimmer guard and trimmer
head
1. Fit the correct trimmer guard (A) for use with
the trimmer head. Hook the trimmer
guard/combination guard onto the fitting on the
shaft and secure with the bolt (L).
2. Fit the drive disc (B) on the output shaft.
3. Turn the shaft until one of the holes in the drive
disc aligns with the corresponding hole in the
gear housing.