Troy-Bilt 12087 - Manual (Page 48)

tCCP'*
C. Adding or Changing Gear Oil
For partial fill-ups (just a few
ounces or less), use SAE 140, SAE
85W-140, or SAE 80W-90 weight
gear oil with an API rating of GL-4
orGL-5. For full replacement,
use SAE 140 or SAE 85W-140
gear oil with an API rating of GL-4
only. (At the Factory, SAE 85W-
140 weight gear oil is used.)
IMPORTANT - Do not use auto­
matic transmission fluid or en­
gine oil. They are too light in
weight and will result in trans­
mission damage.
The gear oil does not need to be
changed. Do so only if you know,
or suspect, it is contaminated with
dirt, sand or other foreign particles.
Gear oil is available at well-
stocked service stations, power
equipment centers, or farm/heavy
equipment outlets. (It may also be
ordered from Troy-Bilt.)
Capacities: Power unit transmis­
sion holds approximately 60 ozs.;
Tine Attachment transmission
holds approximately 72-V 2 ozs.
To Add Gear Oil to the
Power Unit Transmission:
1. Follow steps 1 and 2 of “To
Check the Power Unit Oil Level:”
on the previous page.
2. Using a 3/4" wrench (or
socket), remove the bolt securing
the handlebar base to the top of the
transmission (prop the handlebars
first to prevent them from falling).
Then, unplug the Forward
Interlock wire harness receptacle at
the bottom of the handlebars. Set
the handlebar base and bolt aside
on a clean surface. The bolt hole
in the top of the transmission is the
gear oil fill hole. See Figure 5-9.
3. Slowly pour gear oil through a
clean funnel into the transmission.
Stop when gear oil begins to flow
from the oil level check hole on the
Figure 5-9: Gear oil fill hole (A) and gear oil drain location (B).
left side of the transmission
(Figure 5-7).
4. Reinstall the oil level check
plug. Tighten it securely.
5. Reinstall the handlebars using
the mounting bolt previously re­
moved. Align the handlebars so
they point straight backwards, not
at an angle. Then tighten the
mounting bolt securely.
6. Reconnect the Forward
Interlock wire harness to the recep­
tacle. Be certain it’s secure.
7. Test operation of the Forward
Interlock Safety System — refer
to Section 4 for procedure.
To Drain and Fill the Power Unit
Transmission:
1. Place a shallow pan under the
transmission gear oil drain plug
(refer to B, Figure 5-9).
2. Remove the oil level check plug
(see Figure 5-7) with a 3/8"
wrench. This vents the transmis­
sion for faster oil draining.
3. Using the 3/8" wrench, remove
the drain plug (B, Figure 5-9).
The gear oil will drain quite slowly
since it is thick. After about two
quarts have drained, tilt the tiller
forward so any oil at the rear of the
transmission will drain out.
4. Clean the drain plug threads,
put non-hardening gasket sealant
on the threads, and reinstall plug.
5. Refill the transmission with the
correct amount of gear oil before
operating the tiller again. When
oil seeps from the oil level check
hole, the right amount of gear oil
has been added. Replace all plugs.
To Add Gear Oil to the Tine
Attachment Transmission:
1. Select the right depth regulator
lever setting:
a) If filling an empty transmission,
raise the Depth Regulator Lev­
er so tines are on the ground.
b) If topping off the gear oil,
move Depth Regulator Lever
down to engage its top notch.
2. Remove dipstick from tine at­
tachment (see Figure 5-8).
3. Slowly add gear oil in the dip­
stick hole. Add 1/2-ounce at a
time to avoid overfilling. It takes
about I
2 -V 2 ounces.
4. Take dipstick readings fre­
quently. Stop when oil reaches
“Cold” range marking on dipstick.
Replace dipstick securely.
48