SECTION
10
GEARBOX
The gears inside the gearbox used on the Tor0 straight
shaft trimmers are not replaceable individually.
If
damaged or defective, the gearbox must be replaced as
an entire unit.
Regular maintenance is important in ensuring long
life
from the gearbox.
It
should be lubricated after every
40
hours of use with a number 2 general purpose lithium
base grease.
Gearbox Removal
1.
Remove the cutter implement by inserting a flat
blade screwdriver into the hole in the top of the
shield, then rotating the cutter implement
clockwise (as viewed from the bottom of the
trimmer).
See
Figure 128.
A
CAUTION:
Whenever removing
a
brush or saw blade
from
the
trimmer, grasp
it
with a rag or
heavy gloves
to
avoid
lacerations.
Figure 128
2. Remove the dust cap from the drive shaft.
3. Remove the three screws securing the shield to the
gearbox and, on units with serial numbers
6OOOOOO1 and up, remove the grass wrap shield.
4.
Remove the four machine screws and nylon lock
nuts that secure the
two
portions of the shield to
the shield bracket
and
remove the shield.
5.
Loosen the
two
clamping screws and one locating
screws securing the gearbox to the drive tube and
remove the gearbox.
54
Gearbox Installation on Drive Tube
1. Before installing
the
gearbox make sure that the
drive shaft is properly positioned in the drive tube.
See Figure 129.
2.5
CM
(1")
2. Slide the gearbox onto the drive tube.
It
may be
necessary to rotate the cutter implement slightly to
get the drive shaft to line up
with
the upper gear of
the gearbox. Remove the locating screw and
visually line
up
the locating screw hole and the hole
in the drive tube. Insert the locating screw and
tighten the single locating screw and
two
clamping
screws. See Figure 130
GEARBOX
SHIELD
BRACKET
--
Figure 130
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