Troy-Bilt Horse User Manual

Page 30

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S

ection

6— M

aintenance

& a

djuStMentS

30

For dipsticks With ‘Check Cold’ Marking (Cold means 2 hours

have passed since the tiller was used.)
1.

Move the tiller to level ground.

2.

Pull the Depth Regulator Lever back, then push it down all

the way (to engage its top notch).

3.

Place a sturdy support under the engine to prevent the

tiller from tilting too far.

4.

Now slide three pieces of 2” x 4” lumber underneath the

drag bar — raising the drag bar about 4-1⁄2” above ground.

This elevation allows an accurate “cold” gear oil reading .

5.

Wait two hours with tiller elevated (allow more time if

temperature is below 40ºF).

6.

Loosen and remove the transmission dipstick on the back

of the tine shield. See Fig. 6-7. Wipe it clean with a rag.

7.

Hold the dipstick so its markings face to the rear of tiller.

Lower it straight down into the sump hole to touch the

drive shaft inside. See Fig. 6-7. Don’t force or try to thread it

back in; an incorrect reading will result.

8.

Remove the dipstick and check the oil level. It should be

anywhere within the crosshatched area or even slightly

above the Max marking. If correct, replace the dipstick and

remove the boards used as props.

9.

If the oil level was low, gear oil must be added before using

the tiller. See Adding or Changing Gear Oil.

For Dipsticks With Hot/Cold Markings
1.

Move the tiller to level ground.

2.

Pull the Depth Regulator Lever back, then push it down all

the way (to engage its top notch).

3.

Place a sturdy support under the engine to prevent the

tiller from tilting too far.

4.

Cold reading (preferred method): (Two hours has passed

since the tiller was used.) Place a 2” x 4” board (on edge)

under the drag bar — raising the tiller and drag bar about

3-1⁄2” above ground. Hot reading: (Tiller was operated for

more than 30 minutes within the past hour.) Do not use the

wood prop to elevate the tiller.

5.

Follow Steps 4, 5 and 6 given for the other dipstick type.

6.

Remove the dipstick and check the level. It should be

within or above the “Cold” range marking if taking a cold

reading. If taking a hot reading, the level should be within

or slightly above the “Hot” range.

7.

If the level is incorrect, see Adding or Changing Gear Oil.

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 or GL-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.)
NOTE: Do not use automatic transmission fluid or engine oil.

They are too light in weight and will result in transmission

damage.
NOTE: 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 authorized dealers and most service

stations, power equipment centers, or farm/heavy equipment

outlets.
Capacities: The Power Unit transmission holds approximately

60 ounces and the Tine Attachment transmission holds

approximately 12-1⁄2” ounces.
Adding Gear Oil to the PTO Power Unit Transmission
1.

Do steps 1 and 2 of Checking the Power Unit Oil Level.

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 Fig. 6-7.

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 left side of the transmission. See

Fig. 6-7.

4.

Reinstall the oil level check plug. Tighten it securely.

5.

Reinstall the handlebars using the mounting bolt

previously removed. 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

receptacle. Be certain it’s secure.

7.

Test the operation of the Forward Interlock Safety System.

See Forward Interlock System on the next page.

Draining and Filling the PTO Power Unit Transmission
1.

Place a shallow pan under the transmission gear oil drain

plug. See Fig. 6-8.

2.

Remove the oil level check plug with a 3⁄8” wrench. This

vents the transmission for faster oil draining.

Oil Level Check Plug

Gear Oil

Fill Hole

Gear Oil

Drain

Figure 6-8

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