MTD 192-766 User Manual
10*
ROTARY TILLER
FOR
GARDEN TRACTORS
Model Nos.
192-766,193-966-760
and 193-967-7^0
For one year from date of purchase, MTD Products Inc,
will replace for the original purchaser, free of charge, F.O.B.
factory or authorized service firm, any part or parts found to
be defective in material or workmanship. All transportation
charges on parts submitted for replacement under this war
ranty must be paid by the purchaser. This warranty does not
include replacement of parts which become inoperative
through misuse, excessive use, accident, neglect, improper
maintenance or alterations by unauthorized persons. This
warranty does not include the engine, motor, battery, bat
tery charger or any component parts thereof. For service on
these units refer to the applicable manufacturer's warranty.
The above warranty will apply only to the original owner
and will be effective only if the warranty card has been pro
perly processed. It will not apply where the unit has been
used commercially.
Warranty service is available through your local author
ized service dealer or distributor. UNDER NO CIRCUM
STANCES WILL THE RETURN OF A COMPLETE UNIT
BE ACCEPTED BY THE FACTORY UNLESS PRIOR
WRITTEN PERMISSION HAS BEEN EXTENDED.
Your rotary tiller is a precision built machine designed to
to take the work out of gardening and other related chores. It
can be used for seed b<Kj preparation, titling, cultivating, fur
rowing, composting and mulching. Like any other piece of
power equipment, it n»quires a certain amount of care and
maintenance. In return For this, it will give a maximum of ser
vice and efficiency. Read these instructions carefully before
assembling or operating your tiller. Through proper care and
operation, you will obtain long, efficient service and trouble
free operation.
1. Your tiller is a precision piece of power equipment. Exer
cise extreme caution at all times.
2. Do not attempt to start engine with the clutch control in
engages or "Forward" position.
3. Stand clear of tines when starting engine. Never stand in
front of, or work on tines while the engine is running.
4. NEVER place hands or feet in the vicinity of the tines
while the engine is running.
5. Always stop engine iMien tiller is not in actual use.
6. Always disconnect spark plug wire during repairs or re
fueling operations.
7. Do not fill gas tank white engine is running. Do not spill
gasoline on hot engine.
MTD PRODUCTS INC
5389 WEST 130th STREET
P.O.BOX 2741 CLEVELAND OHIO 44111
FORM NO. 770-3844
192- 766 Tiller Attachment is for 10, 12, and 14 HP Tractors built before
1971.
193- 966 Tiller Attachment is for the 1971 through 1973 10, 14, 15 and 16
HP Tractors. (Models 141-760, 141-960, 142-760, 142-960, 143-860 and
143-960).
193-967 Tiller Attachment is for the Hydrostatic Tractors. (Model 141-900,
142,990 and 143-990).
ASSEMBLY INSTRUCTIONS FOR
MODELS
193-966 and 193-967. (Refer to Fig. 2)
1. Assemble outer tine assemblies complete to the
inner tine assemblies complete with four spirol
pins 5/16 diameter x 2-1/2^’ long Heavy Duty.
(Ref. 28).
2. Assemble pivot bracket assembly (Ref. 24) to the
power input side of the gear case with two bolts
5/8-11 X 1-1/2” long (Ref. 67) and lockwashers
5/8 diameter (Ref. 25).
3. Assemble other pivot bracket assembly (Ref. 24)
to the right hand side of gear case.
4. Assemble the universal drive shaft assembly (Ref.
26). To the gear case with spirol pin (Ref. 22).
Drive pin into the shaft with a hammer. The end of
the universal drive shaft assembly with the square
head set screw attaches to the power take off on
tractor.
5. Assemble cover bracket (Ref. 20) to cover bracket
assembly (Ref. 5) with one carriage bolt 1-1/2” long
(Ref. 15).
6. Assemble cover bracket assembly (Ref. 5) to cover
assembly (Ref. l)with six carriage bolts 5/16—18x1”
long (Ref. 4) lockwashers 5/16 diameter (Ref. 6) and
nuts 5/16-18 thread (Ref. 7). Assemble bolts and
nuts loose until all six are started, then tighten.
ASSEMBLY INSTRUCTIONS
FOR MODEL
192-766. (Refer to Figs. 1 and 2)
1. Assemble outer tine assemblies complete to the
inner tine assemblies complete with four spirol
pins 5/16 diameter x 2-1/2’’ long Heavy Duty.
(Ref. 28).
2. Assemble flat bracket L.H. (Ref. 69) to the power
input side of the gear case with two bolts
5/8—11 X 1-1/2” long (Ref. 67) and lockwashers
5/8 diameter (Ref. 25).
3. Assemble offset bracket R.H. (Ref. 68) to the right
hand side of the gear case with two bolts
5/8-11 X 1-1/2” long (Ref. 67) and lockwashers 5/8
diameter (Ref. 25).
4. Assemble the universal drive shaft assembly (Ref.
26) to the gear case with spirol pin (Ref. 22).
Drive pin into the shaft with a hammer. The end
of the universal drive shaft assembly with the
square head set screw attaches to the power take
off on the tractor.
5. Assemble cover bracket (Ref. 5) to the cover
assembly (Ref. l)with sixcarriage bolts 5/16—18x1”
long (Ref. 4), lockwashers 5/16 diameter (Ref. 6)
and nuts 5/16—18 thread (Ref. 7). Assemble
bolts and nuts loose until all six are started, then
tighten.
7. Assemble cover and bracket assembly to gear case
with four bolts 1/2-13 X 7/8 long. (Ref. 9) and lock
washers 1/2 diameter (Ref. 10). Assemble bolts
loose until- all four are started, then tighten.
8. Remove the solid pipe plug in the hole above the
input shaft in the gear case and replace it with the
vented pipe plug (Ref. 21). Refer to Figure 2 for
proper location of the vented plug. This vented plug
allows the gear case to breathe.
9. The lubricant level in the gear case should be
checked after it is attached to the tractor.
6. Assemble cover and bracket assembly to the gear
case with four bolts 1/2—13 x 7/8 long (Ref. 9) and
lockwashers 1/2 diameter (Ref. 10). Assemble bolts
loose until all four are started, then tighten.
7. Remove the solid pipe plug in the hole above the
input shaft in the gear case and replace it with the
vented pipe plug (Ref. 21). Refer to Figure 2 for
proper location of the vented plug. This vented
plug allows the gear case to breathe.
8. The lubricant level in the gear case should be
checked after it is attached to the tractor.
ATTACHING YOUR ROTARY TILLER TO YOUR
TRACTOR (Models 193-966 and 193-967)
1. Before attaching your rotary tiller to your tractor, be
sure the rear wheels on the tractor are all the way
into the minimum rear wheel width. Refer to your
tractor manual.
2. Remove the draw bar assembly from the three point
hitch of your tractor by removing the two cotterhairpins.
3. Place the rotary tiller behind the tractor in the
approximate position shown in Fig. 2.
4. Attach universal drive shaft (Ref. 26) to the tractor
power take off. Tighten set screw (Ref. 27).
5. Move the lift lever on the tractor until the draft bar
assemblies line up with pivot brackets (Ref. 24).
6. Assemble pivot brackets (Ref. 24) to the rear of the
tractor with washers and cotter-hairpins.
ATTACHING YOUR ROTARY TILLER TO YOUR
TRACTOR (Model 192-766).
1. Before attaching your rotary tiller to your tractor, be
sure the rear wheels on the tractor are all the way
into the minimum rear wheel width. Refer to your
tractor manual.
Remove the part of the plow hitch from your
2.
tractor by removing the two cotter-hairpins on the
loose clevis pins and the two cotter-hairpins from
the hitch adjusting rods. Refer to Fig. 1.
Lift the rotary tiller with the lift h^^adle on the tractor
to transport it to and from the work area. Use caution
when transporting the rotary tiller since your ground
clearance has been reduced.
The entire tiller unit is offset to the left to allow
closer tilling with the left side.
NOTE: BE SURE THE POWER TAKE OFF HANDLE
IS IN THE ‘‘OFF” POSITION BEFORE STARTING
THE TRACTOR ENGINE. Refer to the tractor manual
for proper position of the PTO handle.
GENERAL ROTARY TILLER OPERATION
ALWAYS shut the engine off when removing a stone or
anything that becomes entangled in the tines.
All large stones or rocks should be removed from the
area before you begin tilling.
Tilling can be done with or without the outer tine
assemblies. You can till 32!/2” wide with the outer tines
and 17” wide with only the inner tines.
Use rear wheel weights when tilling. Part number
191-776.
Maximum tilling depth is approximately 10” depending
on the type of soil. This CANNOT be accomplished in
one pass. Maximum tilling depth may be only 2-1/2”
on extremely hard soil on the first pass.
The more passes you make with the tiller over the same
area, the deeper you can till and the finer you pulverize
the soil. Change directions as often as you can to level
out the ground and to prevent furrows.
When tilling, the tiller will push the tractor and the
transmission on the tractor will hold the tractor back.
For easy lifting of the rotary tiller from the ground, shut
off the power by disengaging the PTO handle and
continue to drive the tractor forward. The tines will
climb out of the hole when you pull the lift lever
handle back.
3. Adjust the hitch adjusting rods until 3 or 4 threads
extend beyond the rear hitch ferrule.
4. Place the rotary tiller behind the tractor in the
approximate position shown in Fig. 2.
5. Attach universal drive shaft (Ref. 26) to the tractor
power take off. Tighten set screw (Ref. 27).
6. Assemble brackets (Ref. 68 & 69) to the rear of the
tractor with the loose clevis pins, washers and
cotter-hairpins.
CHECK LUBRICANT LEVEL at this time. The gear
case is lubricated at the factory but should be checked
for proper lubricant level before each operation. Remove
plug (Ref. 61) on side of gear case. Lubricant should
be at this level, if not, fill through the vented pipe plug
hole (Ref. 21) with SAE 140 oil until the lubricant over
flows through the hole in the side of the gear case.
Replace the pipe plugs. BE SURE THE VENTED PIPE
PLUG IS IN THE OIL FILL HOLE. Refer to Fig. 3.
LUBRICATION
Gear Case - Lubricated with three quarts of SAE 140
oil. It is lubricated at the factory. Be sure to check
the lubricant level before each use.
To check the oil level, remove plug (Ref. 61) on the
side of the gear case. See Fig. 3. Lubricant should be
at this level. If not, fill through the vented pipe plug
hole (Ref. 21) until it overflows through the hole in
the side of the gear case. Replace both plugs. BE
SURE THE VENTED PIPE PLUG IS IN THE OIL
FILL HOLE.
Grease Fittings — There are three grease fittings on
the universal drive shaft assembly. Lubricate after
each 25 hours of use with an automotive multi-purpose
type grease. Apply grease with grease gun provided
with your tractor. Lubricate until the old grease is
pushed through and clean grease appears.
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