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Troy-Bilt 12090 - Adding or Changing Gear Oil

Troy-Bilt 12090
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Section5: Maintenance
_ efore inspecting,cleaningor servicingthe machine, shutoffengine, wait for all movingparts to come
to a complete stop, disconnectsparkplug wire and movewire away from sparkplug. Remove ignition
key, if soequipped.
Failureto follow these instructionscanresult in seriouspersonalinjuryor propertydamage.
Figure 5-7: Remove oil level check
plug. Gear oil should seep out if
the level is sufficient
3. If the oil levelis correct, oil will seep
out of thecheck hole (allow extra time in
cold weather). If it does, the levelis fine
and you should replacethecheck plug. If
no oil seepsout, seeAdding or Changing
GearOil.
Checkingthe Tine
AttachmentOil Level
IMPORTANT: Two different gear oil
checking procedures for the tine attach-
ment transmission are described next.
Use the first procedure if the dipstick in
your tine attachment has only a 'Check
Cold' marking. Usethe second procedure
if the dipstick has both cold and hot
markings at the end. First remove the
dipstick from the tine attachment trans-
mission (Figure 5-8) to see which type
dipstick you have. Then replace the
dipstick with markings on dipstick facing
to rear.
Figure 5-8: Checking gear oil level;
markings on dipstick (tine attach.
ment transmission) must face rear.
ForDipsticksWith 'CheckCold"Marking
(Coldmeans 2 hours has passed since
the tiller was used.)
I. Move the tiller to level ground.
2. Pull the DepthRegulator Leverback,
then push it down all theway (to engage
its top notch).
3. Place asturdy support under the
engineto prevent the tiller from tilting too
far=
4. Now slide three piecesof 2" x 4"
lumber underneaththe drag bar- raising
the drag bar about 4-112"aboveground.
This elevation allows an accurate"cold"
gear oil reading.
5. Wait two hours with tiller elevated
(allow moretime if temperature is below
40°F).
6. Loosen and remove transmission
dipstick (Fig.5-8). Wipe it clean with a
rag.
7. Hold dipstick so its markings faceto
rear of tiller. Lower it straight down into
the sump hole to touchthe drive shaft
inside (Fig.5-8). Don't force or try to
thread it back in; an incorrect readingwill
result.
8. Remove dipstick and checkoil level. It
should be anywherewithin the cross-
hatched areaor evenslightly above the
Max marking. If correct, replacedipstick
and remove the boards usedas props.
9. If oil level was low, gear oil must be
added beforeusing the tiller. See Adding
or ChangingGearOil next.
ForDipsticksWithHot/ColdMarkings
1. Move the tiller to levelground.
2. Pull the DepthRegulator Leverback,
then push it down all theway (to engage
its top notch).
3. Place asturdy support under the
engineto prevent the tiller from tilting too
far=
4. Cold reading(preferred method):
(Two hours has passedsince thetiller
was used.) Place a 2" x 4" board (on
edge)under the drag bar- raising the tiller
anddrag bar about 3-I12" aboveground.
Hotreading:(Tiller was operatedfor
morethan 30 minutes within the past
hour.) Donot usethe wood prop to
elevatethe tiller.
5. FollowSteps 4, 5 and6 given for the
other dipstick type.
6. Removedipstick and checklevel. It
should bewithin or above the"Cold"
rangemarking if taking a cold reading. If
taking a hot reading,the level should be
within or slightly abovethe "Hot" range.
7. If the level is incorrect, see Adding or
ChangingGearOil.
Adding or Changing Gear Oil
Forpartial fill-ups (just a few ounces or
less), useSAE140, SAE85W-140, or SAE
80W-90weight gear oil with an API rating
ofGL-4or GL-5. Forfull replacement,
useSAE140 or SAE85W-140 gear oil
with anAPI rating of GL-4only. (At the
factory, SAE85W-140 weight gear oil is
used.)
IMPORTANT: Do not use automatic
transmission fluid or engine oil. They are
too light in weight and will result in trans-
mission damage=
Thegear oil does not needto bechanged.
Doso only ifyou know, or suspect,it is
contaminatedwith dirt, sand or other
foreign particles.
Gearoil is availableat authorized dealers
andmost service stations, power
equipmentcenters, or farm/heavy
equipmentoutlets=
Capacities: Power unit transmission
holds approximately 60 ozs.; TineAttach-
ment transmission holds approximately
12-112"ozs.
33

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