Troy-Bilt 12090 - Manual (Page 40)

Sections: Maintenance
A WARNING
*-p
n'
Before inspecting, cleaning or servicing the machine, shut off engine, wait for all moving parts to come
to a complete stop, disconnect spark plug wire and move wire away from spailt plug. Remove ignition
key, if so equipped.
Failure to follow these instructions can result in serious personal injury or property damage.
Single Tine Replacement
A WARNING
The tines or tine hood edges may be
sharp. Wear thick gloves to protect
your hands from cuts or scrapes.
1. Move the Wheels/Tines/PTO Drive
Lever to NEUTRAL, the Wheel Speed
Lever to either FAST or SLOW position,
and the Tines/PTO Clutch Lever to
ENGAGE.
2.
Gently tilt the tiller forward until the
engine rests on the ground.
3.
Raise the hood fiap at the back of the
tiller and tie it up with string.
4.
Before removing a tine, note in which
direction the bent tip points. The new tine
must be installed in the same direction.
5. Use two 9/16" wrenches to remove the
two bolts and nuts securing the tine to the
tine holder plate (Figure 5-32). Use pene­
trating oil on the hardware if it is rusted or
hard to remove.
i;—
Figure 5~32: Removing a single tine
requires taking off two bolts and
two nuts.
6. Mount the new tine exactly the way the
old tine was positioned. (The sharp edge
of the tine, which enters the soil first, must
face forward when above the tine shaft.)
Replace the bolts and nuts and tighten
them securely.
Removing and Replacing A Tine
Holder Assembly
A WARNING
• The tines or tine hood edges may be
sharp. Wear thick gloves to protect
your hands.
• Wear safety goggles to protect your
eyes. When loosening hardware, do
not hit a wrench with a metal tool- this
could shatter the tool or wrench,
sending metal particles into your eyes.
The 16 Bolo Tines are mounted eight per
side on left-side and right-side tine
holders - on either Style A or Style B
holders (refer to Figures 5-33 and 5-34 to
see which style tine holder you have).
Style A tines holders are secured to the
tine shaft with two bolts and two
nuts. Style B tines holders are
secured with a single end bolt to
the left and right sides of the tine
shaft. Flere's how to replace the
tines and holders as assemblies.
4. Use a soft mallet to drive the holder
off the tine shaft. (Use a heavy hammer
and block of wood to knock off the immo­
bilized tine holder.)
5. When the holder is off, clean all dirt
and debris from the shaft and the holder.
Apply fresh grease to the tine shaft.
Replacing Tines Holder Assembly
1. Replace the holder so the sharp tine
edges face forward {lowarb front of tiller).
Tap tine holder back on the tine shaft.
2. Grease the threads on the mounting
bolt(s). Install and tighten the bolt(s)
securely.
Non-Tapered Tine Shaft
Removing Tine Hoider Assembly
1. Follow steps 1-through-3 in
Single Tine Replacement above.
2.
Identify the tine holders as
Style A or Style B, then as left­
side and right-side holders - they
must be replaced on the same
side from which they were
removed. Use a piece of chalk or
a grease pencil to mark them L and
R.
3.
With Style A holders, remove the
two bolts and nuts securing each
holder (Figure 5-33). With Style B
holders, remove the single bolt
(along with the washers) from the
end of the tine shaft (Figure 5-34).
fc. "L
Right-Side
Tine Holder
Left-Side
Tine Holder
Figure
5-33;
Style “A ” Tine Holders.
40 Figure
5-34:
Style “B" Tine Holders.