Page 1
10*
Model Nos.
ROTARY MOWER
112-530
I M P O R TA
SAFE OPERATION PRACTICES - WALK BEHIND MOWERS
TRAINING
1. Read the Operating and Service Instruction Manual
carefully. Be thoroughly familiar with the controls and
proper use of the equipment.
2. Never allow children to operate a power mower.
3. Keep the area of operation clear of all persons,
particularly small children, and pets.
PREPARATION
1. Thoroughly inspect the area where the equipment is to
be used and remove all stones, sticks, wire, bones and
other foreign objects.
2. Do not operate equipment when barefoot or wearing
open sandals. Always wear substantial footwear.
3. Check fuel before starting engine. Do not fill gasoline
tank indoors, when engine is running, or while engine
is still hot. Wipe off any spilled gasoline before starting
engine.
4. Disengage self-propelled mechanism or drive clutch on
units so equipped before starting engine (motor).
5. Never attempt to make a wheel height adjustment while
engine (motor) is running.
6. Mow only in daylight or in good artificial light.
7. Never operate equipment in wet grass. Always be sure
of your footing; keep a firm hold on the handle and
walk; never run.
OPERATION
1. Do not change engine governor settings or overspeed
engine.
2. Do not put hands or feet near or under rotating parts.
Keep clear of discharge opening at all times.
3. Stop blade(s) when crossing gravel drive, walks or roads.
4. After striking a foreign object, stop the engine (motor),
remove wire from spark plug, thoroughly inspect the
mower for any damage, and repair the damage before
restarting and operating the mower.
5. If the equipment should start to vibrate abnormally,
stop the engine (motor) and check immediately for the
cause. Vibration is generally a warning of trouble.
6. Stop engine (motor) whenever you leave the equipment,
before cleaning mower housing, and when making any
repairs or inspections.
7. When cleaning, repairing or inspecting, make certain
blade and all moving parts have stopped. Disconnect
spark plug wire and keep wire away from plug to prevent
accidental starting.
8. Do not run engine (motor) indoors.
9. Shut engine (motor) off and wait until blade comes to a
complete stop before removing grass catcher and/or
unclogging chute.
10. Mow across the face of slopes, never up-and-down.
Exercise extreme caution when changing direction on
slopes. Do not mow excessively steep slopes.
11. Always disconnect electric mowers (line operated)
before cleaning, repairing, or adjusting.
12. Never operate mower without proper guards, plates or
other safety protective devices in place.
13. Keep washout ports and other mower housing service
openings closed when mowing.
MAINTENANCE AND STORAGE
1. Check blade and engine mounting bolts at frequent
intervals for proper tightness.
2. Keep all nuts, bolts, and screws tight to be sure equip
ment is in safe working condition.
3. Never store equipment with gasoline in the tank inside
of a building where fumes may reach an open flame or
spark. Allow engine to cool before storing in any
enclosure.
4. To reduce fire hazard keep engine free of grass, leaves or
excessive grease.
5. Check grass catcher bags frequently for wear or deterio
ration. Replace with new bags for safety protection.
MTD PRODUCTS INC
• 5389 WEST 130th STREET •
P. 0. BOX 2741 CLEVELAND OHIO 44111
FORM NO. 770-3484
Page 2
NOTE: Set screws in pulleys are treated with a nut
and bolt sealant. Remove with Allen wrench while
applying heatwith a smalltorch. Sealant disintegrates
at 400°
Blade Spindle Detail on page 7
Blade idler Detail on page 6-
NOTE: To engage the blade with the engine running..
1. Move the throttle control lever to “FAST’ position.
2. Engage the blade engagement lever SLOWLY.
3. Adjust en^Tirtc speed.
The engine is not under warranty by the mower
manufacturer... If repairs or service is needed
on the engine, please contact your nearest
authorized engine service outlet. Check the
“Yellow Pages” of your telephone book under
“Engines — Gasoline.”
Find us fast in the
Page 3
PA RT S LI ST
FO R RO T AR Y M O W ER M O D EL N O .
112 -5 30
Ref.
No.
Par t Ref.
1
2
No.
732-158
754-109
Blade Tension Spring
V Belt - 1/2 X 43 *
DE SC R IP TIO N
3 7b6-300 Flat Washer — 3/8 I.D.
4 710-373
5
756-370
6 712-372
Shoulder — Special
Idler Bearing Assembly 75 712-287
Centerlock — Hex Nut — 5/16—18 thread * 76 712-107
7 310-7353 Bracket — Belt
8 711-212 Sleeve
9 741-120
10 719-120
Bearing - Upper
Spindle Housing
11 712-123 Hex Nut — 5/16-24 thread * t
12
710-117
Hex Head Cap Screw (heat treated) — 82
5/16-24 X 1 long t
710-489
13
513-9383
14
738-213 Axle Bolt — 5/8 length thread
15
741-114
16
17 736-217
748-189
18
19
736-119
Hex Hd. Cap Sew. 3/8-24x1/2 Ig.(heat tr’d)t 84
Wheel Assembly — 8” - B.B.
Ball Bearing
Spring Lockwasher -3/8 heavy duty screw*t
Blade Adapter t
Spring Lockwasher - 5/16 screw * t
20 711-240 Spindle
742-125
21
22
710-122
Blade - 22”- 93
Hex Hd. Cap Sew. 5/16—24 x 1 long *
23 312-8324 Belt Guard 95
24
712-123
25
710-122
26
27
28
29
30
31
32
33
34
35
3-9925
11446
710-473
438-8280
736-921
712-922
710-102
736-222
438-8295
— Engine
36 710-158
37 714-365
38 310-8328
39
736-108
Hex Nut — 5/16—24 thread * 96
Hex Hd. Cap Sew. 5/16—24 x 1 long *
Pulley - 4”
Deck Assembly - 22”
Truss Hd. Mach. Sew. 10—24 x 1/2 long *
Frame Assembly
Spring Lockwasher - 1/2 screw *
Hex Jam Nut - 1/2-20 thread *
Hex Hd.Cap Sew. 1/4—20 x 2-1/2 long *
Ext. Lockwasher - 1/4 screw *
Blade Spindle Cover
Hex Hd. Cap Sew. 5/16-24 x 1-1/4 long * 118
Key — Hi Pro #505 * t
Handle Support - Lower R. H.
Flat Washer - 33/64 I.D. *
41 310-8334 Handle — Lower H. W.
43 310-8327 Handle Support - Lower L.H.
44 310-8325 Belt Trap Assembly
738-234
46
47 310-9372
Pivot Screw
Pivot Bracket
49 756-110 Pulley - Engine
50 712-430 Elastic Stop Nut — 3/8-16 thread *
51
300-8809
Reinforcement Plate
*For faster service obtain standard nuts, bolts, and washers
locally. If these items cannot be obtained locally, order by
number and
nart
438 - Polar Blue \
437 - Flag Red '
size as shown on narts list.
When ordering parts if color or finish is important, use the appropriate color code shown at left,
(e.g. Polar Blue finish — 11446 (438).)
Par t
No.
No.
71 711-179
72 711-180
710-606
73
74 710-106
Ferrule
Control Rod
Hex Hd. Cap Sew. 1/4—20 x 1-1/2 long *
Hex Hd.Cap Sew. 1/4-20 x 1-1/4 long *
DE SC R IP TIO N
Hex Nut — 1/2—20 thread *
Centerlock — Hex Nut — 1/4—20 thread *
77
11623
78
712-324 Elastic Stop Nut — 1/4—20 thread *
79 736-325
80
310-8376
81
310-8373 Lockout Lever Assembly
305-7071
83 310-9364
310-8378
85 712-526
87 746-145
734-180
88
741-113
89
738-114
90
91 736-105
710-209
92
310-9373
94
310-8298
310-9371
901-7805
734-392
97
736-147
98
104
312-7919
710-938
no
Control Panel
Flat Washer - .265 i.D. *
Lockout Bracket Assembly
Grip - Black
Handle — Upper
Clamp Bracket
Speed Nut - 10-24 thread *
Cable Clip
Wheel Assembly - 16” less tire
Ball Bearing
Axle Bolt
Belleville Washer
SEMS Hex Hd. Cap Sew. 3/8—16 x 5/8 Ig.*
Control Rod
Idler Bracket Assembly
Brake Lever
Blade Spindle Ass’y-Complete H.W
Tire — Rib Tread 16 x 1.75
Ext. Lockwasher - # 10 screw *
Anti Scalp Plate - 8-1/2”
Allen Set Screw — 1/4-28 x 1/4 long*
(not shown)
741-107
111
502-8761 Wheel Ass’y Complete
113
736-154 Washer
114
721-105 Seal
115
737-479
116
728-649 Rivet
117
Bearing - Lower - Blade Spindle
Zerk Fitting
754-647 Brake Shoe
310-8378
119
710-148
120
121
122
123
124
746-171 Throttle Control - Complete
736-112 Belleville Washer
736-169
710-152
718-132
125
10769
126 11167
127
726-106
128
11145
129
11141
130
732-253
131
11130 Adapter Plate
132 711-555
Clamp Bracket
Thread Cut Screw #8—32x3/8 Ig.*
Lockwasher 3/8 Screw. *
Hex Head Cap Screw 3/8 —24x1 Ig.*
Plastic Cap — Rear Wheel (not shown)
Blade Adapter Kit
Protective Shield
Push-on Flange Palnut
Hinge Rod
Chute Deflector
Torsion Spring
Pivot Pin
Page 4
ASSEMBLY INSTRUCTIONS
8. Fasten control panel to upper handle with cap screws and
locknuts at lower holes and truss head screw through upper
hole. Tighten all nuts and bolts.
5. Assemble speed nut to clamp bracket. Assembly clamp,
bracket to upper handles with long yellow bolt and nut as
shown.
2. Assemble upper handle parts with cap
screws and locknuts as shown.
BLADE SPINDLE COVER
7. Assemble throttle control to
handle panel with two sheet
metal screws.
JAssemble lockout bracket
'■“» assembly to upper handle.
_ a / Tighten nuts
j securely.
Assemble upper handles and lower handle
supports to lower handle assembly with
cap screws and locknuts. Position sup
ports for most convenient height.
Use lower holes only.
3. Attach lower handle supports to frame assembly
with cap screws, lock washers and hex nuts.
9. Blade Engagement Assembly,
a. Remove Blade Spindle Cover by removing three screws.
b. Move brake lever to rear position so belt is slack.
c. Insert ferrule into blade bracket assembly from the left.
d. Screw rod into ferrule.
e. Assemble control handle to control rod as shown.
f. Adjust control rod. A slight pressure should be needed to operate lockout lever.
Too much pressure can break lever assembly or control rods. Readjust control
rods if pressure is too great.
g. Replace Blade Spindle Cover.
Page 5
OPERATION
1. Before starting engine, check LUBRICATION
INSTRUCTIONS.
2. Check lockout control handle for proper operation.
If too great a pressure is needed to operate these
controls, damage can be done to both the mechanism
and the rods. Readjust so only slight pressure is
needed to operate the blade engaging control. See
ASSEMBLY INSTRUCTIONS Step 9.
3. Service engine with gasoline and oil. See engine
instructions for complete care and maintenance of
engine. READ DIRECTIONS CAREFULLY.
4. Be sure engine crankcase is filled to capacity with
proper grade of oil.
5. Move control handle to “OFF” position.
6. Move throttle control lever to “Choke” position.
7. Crank engine. Move throttle control lever to “Fast”
position as soon as engine fires. Use choke as
needed to keep engine running duringwarm up period.
8. Put blade into motion by moving blade control handle
to “On” position.
To engage the blade with the engine running . . .
a. Move the throttle control lever to “Fast” position.
b. Engage the blade engagement handle SLOWLY.
c. Adjust engine speed.
9. A brief break-in period is essential to insure maxi
mum engine and mower life. This consists of running
the engine a half speed for a period of time required
to use one tank of gasoline. It is also recommended
to change crankcase oil after the first five hours of
operation or as operating conditions dictate. Always
check oil before operating the mower. BE SURE
CRANKCASE IS FULL.
10. Proper lubrication must be maintained at all times.
11. Appropriate clothing should be worn when cutting
brush or heavy weeds. Safety shoes and safety
glasses are highly recommended.
12. The engine is stopped by moving the throttle control
lever to “STOP” position.
3. Cutting height adjustment is made by removing and
moving axle bolts to the desired positions. Cutting
height will be raised as axle bolts are moved to
lower mounting holes and lowered as axle bolts are
moved to higher mounting holes. All axle bolts must
be mounted in the same relative position to the deck.
When wheels are mounted to the deck, the crown
shape washers must be assembled with the crown
away from the deck. This is necessary to prevent
the axle bolts from loosening.
4. If throttle adjustment becomes necessary, the throttle
control wire may be reset as follows:
a. Loosen, but do not remove, screw securing throttle
control wire assembly at engine.
b. Move throttle control lever on handle to “Choke”
position.
c. Move lever to which control wire is fastened to
engine to full choke position. Retighten screw to
secure throttle control wire assembly.
LUBRICATION
Important; Always stop engine and disconnect spark
plug wire before cleaning, lubricating or doing any kind
of work on the lawn mower.
1. Wheel bearings are ball bearings. Use SAE 30 engine
oil.
2. Throttle — Periodically lubricate throttle control
lever and entire length of throttle wire assembly
with a few drops of SAE 30 engine oil for ease of
operation.
3. Engine — Follow engine manual for lubrication
instructions. Check oil level before each mowing.
4. Friction point between idler bracket assembly (Ref.
No. 94) and deck should be greased once each
season with a multi-purpose grease.
5. Blade Spindle Assembly — The blade spindle
assembly is equipped with a grease fitting. Use
grass discharge chute for access to the fitting
located under the deck. Use multipurpose grease.
Lubricate PRIOR to initial use and every 25 hours
thereafter. CAUTION: Be sure spark plug wire is
disconnected and grounded.
6. Protective Shield — The pivot points on the protec
tive shield should be lubricated periodically with
oil to prevent any rust or binding up.
7. Chute Deflector — The torsion spring and pivot
point should be lubricated periodically with oil to
prevent any rust or binding up. Deflector must work
freely.
ADJUSTMENT
1. Handles may be adjusted by changing the position
of the lower support mounting holes. When this
change is made, it may also be necessary to check
the adjustment of the control rod. See Step 9 in
ASSEMBLY INSTRUCTIONS.
2. Control rod adjustment is made as shown in ASSEM
BLY INSTRUCTIONS Step 9.
MAINTENANCE
Important: Always stop engine and disconnect spark
plug wire before cleaning, lubricating or doing any kind
of work on the lawn mower.
1. Cutting Blade — Remove all nuts and bolts holding
the blade to the blade hub.
Page 6
When sharpening blade, follow the original angle of
of grind as a guide. It is extremely important that
each cutting edge receives an equal amount of grind
ing to prevent an unbalanced blade. An unbalanced
blade will cause excessive vibration when rotating
at high speeds and may cause damage to the mower.
Upon reassembling, make certain all parts
are
assembled properly and tightened securely.
2. Deck — The underside of mower deck should be
cleaned after each period of use as grass clippings,
leaves, dirt and other matter accumulates. This
accumulation of grass clippings, etc. is undesirable
as it will invite rust and corrosion and may cause
an uneven discharge of grass clippings at next
cutting.
The deck may be cleaned by tilting the mower back
ward or on its right side and scraping clean with a
suitable tool or by washing with a stream of water
from a garden hose. CAUTION; Do not direct the
stream of water at a hot engine as damage to the
engine may result.
3. Belt replacement may be made as follows:
a. Remove blade spindle cover.
b. Remove front belt guard.
c. Remove blade tension spring.
d. Loosen belt on bracket of idler bearing assembly.
e. Remove brake lever assembly.
f. Remove damaged or worn belt.
g. Place new belt on engine pulley. Do not bend
belt guard pins. Belt should be inside of pins.
h. Work belt to front and mount on blade spindle
pulley. Replace front belt guard.
i. Replace brake lever assembly.
j. Slip belt on idler pulley between pulley and belt
bracket.
k. Replace blade tension spring.
l. Move blade lockout handle to “ON” position.
m. Position belt bracket ori idler pulley to clear the
tightened belt. Secure belt bracket in position.
See drawing page 2.
n. Replace blade spindle cover.
4. Storage — The following steps should be taken to
prepare lawn mower for storage:
a. Clean and lubricate mower thoroughly as describ
ed in the preceding instructions.
b. Refer to engine manual for correct engine storage
instructions.
c. Coat mower’s cutting blade with multi-purpose
grease to prevent rusting.
d. Place blocks under deck to raise tires clear of
floor.
e. Store mower in a dry, clean area.
USING YOUR ROTARY MOWER
For best results do not cut wet grass because it tends
to stick to the underside of the mower, thus preventing
proper discharge of grass clippings. If wet grass must
be cut, reduce engine speed to help distribute the
clippings more effectively.
New grass should be treated as wet grass, otherwise a
normal walking speed is about the right pace for
efficient mowing.
The best mowing pattern is one that allows the clippings
to discharge towards the uncut part of thé lawn. This
permits recutting of the clippings to further pulverize
them. When cutting high weeds, discharge towards cut
portion then recut at right angle to first direction.
Lawns should be cut in fall as long as there is growth.
BLADE IDLER BRACKET ASSEMBLY DETAIL
BRAKE SHOE 754-647 (118)
BELT WEAR
Belt clips improperly positioned
will cause premature belt wear.
The belt clip must completely
clear the belt when the belt is
tightened. It should also assist in freeing the
belt from the blade spindle pulley when the belt
is loose. This may be checked by removing the
blade spindle cover.
RIVET 728-649 (117)
IDLER BRACKET ASSEMBLY (94)
IDLER BEARING (5)
756-370
HEX LOCK NUT (6)
712-372
BELT CLIP (7)
310-7353
Page 7
)
LOCKNUT r
712-922 31
LOCKWASHER
736-921 30
)
SPINDLE ASSEMBLY
BLADE SPINDLE
NOTE: PARTS SHOWN
IN DOTTED LINES
NOT INCLUDED
IN ASSEMBLY.
<±)
\
PULLEY
r)756-925
711-212 8
WASHER
736-154 114
26
SEAL
721-105 115
■f , KEY
■’iJ 714-365
■714-365
REINFORCEMENT PLATE
300-8809
ZERK FITTING
737-479
SPINDLE HOUSING
719-120
CAUTION: 1. Bearing races must be firmly seated in Spindle Housing.
10
'2. Zerk Fitting should face Discharge Chute of Deck.
3. Lubricate every 8 to 10 hours with Shell General Purpose
Grease or Equivalent.
SPINDLE
711-240
KEY
51
116
37
20
37
ASSEMBLY
901-7805
FRAME ASSEMBLY
736-119
HEX NUT
712-123
19
11
DECJ127
736-119
HEX NUT
712-123 11
ZERK FITTING
737-479 116
19
Page 8
FIGURE t
Page 9
GRASS CATCHER Model No. 192-003 is available as optional equip
ment for the mower shown in this manual.
WARNING:
1. The mower should not be operated without the entire grass
catcher or chute deflector in place.
2. The mower should not be operated without the protective shield
on the rear of the deck in place.
NOTE:
Under normal usage bag material is subject to wear, and should be
checked periodically. Be sure any replacement bag complies with the
mower manufacturer's recommendations.
For replacement bags, use only factory authorized replacement bag
No. 764-119.
IMPORTANT
After striking a foreign object, stop the engine (motor), remove wire
from spark plug. Throughly inspect the mower for any damage, and
repair the damage before restarting and operating the mower.
WARRANTY
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
warranty 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 al
terations 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 war
ranty card has been properly processed. It will not apply where the unit has been used commercially.
Warranty service is available through your local authorized service dealer or distributor. UNDER
NO CIRCUMSTANCES WILL THE RETURN OF A COMPLETE UNIT BE ACCEPTED BY THE
FACTORY UNLESS PRIOR WRITTEN PERMISSION HAS BEEN EXTENDED
Page 10
PARTS INFORMATION
MOWER, TILLER, SNOW THROWER AND TRACTOR
PARTS
Mower, tiller, snow thrower and tractor parts are available
through the authorized service firms listed below. All orders
should specify the model number of your unit, parts
numbers, description of parts and the quantity of each part
required.
A 1 Engine & Mower Co.
327 East 9th Street
Salt Lake City, Utah 84102
American Electric Ignition Co.
124 N.W. 8th Street
Oklahoma City, Oklahoma 73102
Auto Electric 8> Carburetor Co.
2625 4th Avenue, S.
P. O. Box 1948
Birmingham, Alabama 35233
Automotive Equipment Service Co.
3117 Holmes Street
Kansas City, Missouri 64109
Bailey's Rebuild Inc.
1325 E. Madison Street
Seattle, Washington 98102
Brown Equipment Distributor Inc.
110 Beech Street
Corydon, Indiana 47112
Bullard Supply
2409 Commerce Street
Houston, Texas 77003
Center Supply Company
6867 New Hampshire Avenue
Takoma Park, Maryland 20012
R. T. Clapp Co.
2016 Magnolia Ave., N. E.
Knoxville, Tennessee 37917
W. B. Clements
400 Salem Avenue
Roanoke, Virginia 24016
Morton B. Collins Co.
300 Birnie Avenue
Springfield, Massachusetts 01107
Dixie Sales Company
P. O. Box 1406
327 Battleground Avenue
Greensboro, North Carolina 27402
East Point Cycle & Key Shop
1617 Whiteway
East Point, Georgia 30044
Gamble Distributors
West End Avenue
Carthage, New York 13619
Garden Equipment Co., Inc.
6600 Cherry Avenue
Long Beach, California 90805
Henzier, Inc.
2015 Lemay Ferry Road
St. Louis, Missouri 63125
Frank E. Ives & Son
1101 Lincoln Avenue
Prospect Park, Pennsylvania 19076
J. W. .lewett Co.
981 Folsom Street
San Francisco, California 94107
Kenton Supply
8216 North Denver Avenue
Portland, Oregon 97217
Kimber's Inc.
615 W. Genesee Street
Syracuse, New York 13204
Marr Brothers
423 E. Jefferson
Dallas, Texas 75203
Mathews Auto Electric Co.
420 East 2nd Street
Tulsa, Oklahoma 74120
McClure Lawn 8i Garden Supply
1114 Lexington Avenue
Mansfield, Ohio 44907
Memphis Cycle 8t Supply Co.
421 Monroe Avenue
Memphis, Tennessee 38103
ENGINE PARTS AND SERVICE
Engine parts and service should be handled by your nearest
authorized engine service firm. Check the yellow pages of
your telephone directory under the listing Engines —
Gasoline, Briggs and Stratton or Tecumseh Lauson — Power
Products.
Moz-AII of Florida, Inc.
365 Greco Avenue
Coral Gables, Florida 33146
National Central, Div. of
Joe Sterling, Inc.
Drawer "D" 687 Seville Rd.
Wadsworth, Ohio 44281
Power Equipment Distributor
36463 So. Gratiot Avenue
Mt. Clemens, Michigan 48043
Parts & Sales Inc.
335 West St. Charles Road
Villa Park, Illinois 60181
Power Lawn 8i Garden Equip. Co.
2551-2571 J. F. Kennedy Road
Dubuque, Iowa 52001
Raub Supply Company
James & Mulberry Sts.
Lancaster, Pennsylvania 17604
Radco Distributors
2403 Market Street
P. 0. Box 3216
Jacksonville, Florida 32206
Richmond Battery & Ignition
P. O. Box 25369 — 957 Myers St.
Richmond, Virginia 23260
Smith Hardware Company
515 N. George Street
Goldsboro, North Carolina 27530
South Denver Lawn Equip. Co.
527 West Evans
Denver, Ci lorado 80223
Suhren Engine
8330 Eorhort Blvd.
New Orleans, Louisiana 70118
Sutton's Lawn Mower Shop
Route 4, Box 343
North Little Rock, Arkansas 72117
Warner Equipment
7520 Lyndale Avenue, So.
Minneapolis, Minnesota 55423
FORM NO. 7703484
PRINTED IN U.S. A.
10
Loading...