

TO THE OWNER
Congratulations on your purchase of the Simplicity 4040 tractor. It has been designed with emphasis on the ability to do your
most important jobs qu ickly and efficiently with the least operator effort. The versatile hydrostatic transmission allows you to
shift from forward to reverse without stopping to change gears. With it you can also select exactly the right ground speed for
any condition without changing engine speed and decreasing attachment efficiency. Simplicity has provided you with a large se-
lection of quality engineered attachments specifically designed for the 4040 to make it truly a tractor for all seasons. We have
shown some in this manual - many others are available from your Simplicity dealer.
So that you can get the very most from your purchase, you and anyone else who may operate the tractor should study this
manual and the owners manual for your attachments before using the 4040 tractor. It will help us add you to our long list of
satisfied Simplicity customers. Throughoutthe manual, we will refer to directions as left, right, front and rear. These directions
are as the operator sits on the tractor seat, with the clutch pedal on the left side of the tractor, the brake pedals on the right,
the engine toward the front, and the tractor draw bar at the rear.
For your own safety, and that of your family and friends, periodically review the safety tips. You will find the table of contents
and alphabetized index very useful in referring to this manual when questions arise in the future. We have provided you
. with information to perform most service jobs quickly and easily, but your Simplicity dealer will be happy to help you with
any service or repair work.
When ordering replacement parts for your 4040 tractor, be prepared to give your Simplicity dealer the identification numbers
found on the tractor and engine identification plates shown below. The identification plate for the tractor is found on the right
side of the frame below the tractor seat. The one for the engine is located on the left side of the engine blower housing (side
opposite the engine oil filter). Locate the numbers and record them below for easy reference.
SIMPLICITY MANUFACTURING Co., INC.
PORT WASHINGTON, WIS., U. S. A.
Rele r 10 •• d. no. ""hen
"W'riling or ordering pariS.
I.D. No. I I
TRACTOR IDENTIFICATION PLATE
0 0
On.n
-----®
MODEL AND SPEC NO.
I I
SERIAL No.1
I
GIVE ABOVE N03.
WHEN OflDERINO PARTS
CHECK OIL LEVEL DAILY
CHANGE OIL EVERY 50 HOURS
OIL CAPACITY I 3.5
I
QTS
BELOW 30 F----5W30
ABOVE 30 F---- 30
FOR EXTREME OPERATING
TEMPERATURES, SEE YOUR
SERVICE MANUAL
BATTERY--- [If] VOLT
MANUFACTURED BY
ONAN
DIVISION OF ONAN CORPORATION
0
MINNEAPOLIS MINNESOTA. U.S.A 0
99AJ2.IG
ENGINE IDENTIFICATION PLATE
PERIODICALL V REVIEW THE SAFETY PRECAUTIONS FOUND IN THE SAFETY
SECTION OF THIS MANUAL

TABLE OF CONTENTS
SIMPLICITY NEW EQUIPMENT WARRANTY
PROTECT YOURSELF AND OTHERS
SIMPLICITY OFFERS YOU
OPERATION
INSTRUMENTS AND CONTROLS
BEFORE OPERATING THE TRACTOR
STARTING THE ENGINE
STOPPING THE ENGINE
BREAK-IN PROCEDURE
CONTROLLING TRACTOR GROUND SPEED
HOT WEATHER OPERATION
OPERATION CHART
COLD WEATHER OPERATION
DUSTY OPERATING CONDITIONS
OUT OF SERVICE PROTECTION (STORAGE)
STARTING THE TRACTOR AFTER STORAGE
TROUBLE SHOOTING GUIDE
ADJUSTMENTS
CARBURETOR
GOVERNOR ADJUSTMENT
TRACTION CLUTCH BELT TENSION
CLUTCH PEDAL FREE TRAVEL
HYDROSTATIC TRANSMISSION NEUTRAL
NEUTRAL SAFETY STARTING SWITCH
BRAKE ADJUSTMENT
1
2
3
4
4
8
8
8
9
9
9
10
12
12
12
12
13
15
15
15
16
16
17
18
18
SEAT ADJUSTMENT
WHEEL TREAD ADJUSTMENT
WEIGHTING WITH CALCIUM CHLORIDE
MAINTENANCE
ORDERING REPLACEMENT PARTS
EVERY 5 HOURS
EVERY 25 HOURS
SCHEDULED MAINTENANCE CHART
EVERY 50 HOURS
EVERY 100 HOURS
EVERY 200 HOURS
EVERY 400 HOURS
ACCESSORIES
REAR WHEEL WEIGHTS
TIRE CHAINS
HYDRAULIC CYLINDER
FRONT BUMPER
ATTACHMENTS
FRONT MOUNTED ATTACHMENTS
CENTER MOUNTED ATTACHMENTS
REAR MOUNTED ATTACHMENTS
THREE POINT HITCH
ATTACHING POWER TAKE OFF
SPECI FICATIONS
INDEX
19
19
22
23
23
23
23
24
25
26
27
29
32
32
32
32
33
34
34
34
34
34
36
37
41
r----------SIMPLICITy NEW EQUIPMENT WARRANTY -----------,
The Company warrants Simplicity products to be free from defects in material and workmanship, except the Company
makes no warranty, express or implied, with respect to tires, engines, generators and voltage regulators, which are
warranted by their respective manufacturers. Any part covered by this warranty which is proven defective within one
year (6 months for equipment used for rental, municipal or commercial purposes) under normal use, from date of
purchase, will be replaced without charge, provided such part is returned to the factory, (if requested), and is found to
be defective upon examination at the factory. This warranty does not apply to any Simplicity products altered outside
of the Simplicity factory.THE FOREGOING WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES,-EXPRESS
OR IMPLIED OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, PERFORMANCE, OR
OTHERWISE. The Company's obligation under its warranty is strictly and exclusively limited to the replacement of
such parts, and in no event shall the Company be liable for any other damages, whether direct, immediate, incidental,
special, or consequential. Simplicity Manufacturing Company, Inc., reserves the right to modify or change specifications
without prior notification. There are no warranties which extend beyond the description of any Simplicity product.
1

SAFETY PRECAUTIONS TO
PROTECT YOURSELF AND OTHERS
OPERATION
Know the controls and how to stop quickly - READ THE
OWNER'S MANUAL.
Do not allow children to operate vehicle. Do not allow adults
to operate it without proper instruction.
Do not carry passengers. KEEP CHILDREN AND PETS A
SAFE DISTANCE AWAY.
Clear work area of objects which might be picked up and
thrown.
Take all possible precautions when leaving vehicle unat-
tended; such as disengaging power-take-off, lowering attach-
ments, shifting into neutral, setting parking brake, stopping
engine and removing key.
Do not stop or start suddenly when going uphill or down-
hill. Mow up and down the face of steep slopes; never across
the face.
Reduce speed on slopes and in sharp turns to prevent tipping
or loss of control. Exercise extreme caution when changing
direction on slopes.
Stay alert for holes in terrain and other hidden hazards.
Use care when pulling loads or using heavy equipment.
A. Use only approved drawbar hitch points.
B. Limit loads to those you can safely controL
C. Do not turn sharply. Use care when backing.
D. Use counterweight (s) or wheel weights when sug-
gested in owner's manual.
Watch out for traffic when crossing or near roadways.
Keep all nuts, bolts, and screws tight to be sure equipment
is in safe working condition.
Do not alter basic engine governor settings or overspeed
engine.
Do not operate equipment when barefoot or wearing open
sandals. Always wear substantial footwear.
FUEL & FI RE HAZARDS
Handle gasoline with care -- it is highly flammable.
A. Use approved gasoline container.
B. Never remove cap or add gasoline to a running or hot
engine or fill fuel tank indoors. Wipe up spilled gaso-
line.
2
C. Open doors if engine is run in garage -- exhaust fumes
are dangerous. Do not run engine indoors.
Never store equipment with gasoline in the tank inside a
building where fumes may reach an open flame or spark.
Allow engine to cool before storing in any enclosure.
To reduce fire hazard keep engine free of grass, leaves or
excessive grease.
ATTACHMENTS
Disengage all attachment clutches and shift into neutral be-
fore attempting to start engine.
Disengage power to attachments and stop engine before
leaving operator position.
Disengage power to attachment (s) and stop engine before
making any repairs or adjustments.
Disengage power to attachments when transporting or not
in use.
When using any attachments never direct discharge of ma-
terial toward bystanders or allow anyone near vehicle while
in operation.
Keep vehicle and attachments in good operating condition
and keep safety devices in place. Use guards as instructed in
owner's manuaL
Vehicle and attachments should be stopped and inspected
for damage after striking a foreign object and the damage
should be repaired before restarting and operating the equip-
ment.
When using vehicle with mower:
(I) Mow only in daylight or in good artificial light.
(2) Never make a cutting height adjustment while engine
is running if operator must dismount to do so.
(3) Shut engine off when unclogging chute.
(4) Check blade mounting bolts for proper tightness at
frequent intervals.
Stop blades when crossing gravel drives, walks or roads.
If the equipment should start to vibrate abnormally, stop
the engine and check immediately for the cause. Vibration
is generally a warning of trouble.

SIMPLICITY OFFERS YOU ____________ _
The Simplicity 4040. It's a new concept, a new size in tractors ... designed from
the ground up to do its jobs better and faster than any tractor before it. Integrated
design matches tractor, attachments, and function for optimum performance. Not
an overgrown garden tractor, not a stripped-down ag or industrial model, the 4040
is specifically engineered to fill the gap that has existed between these categories.
It's designed to deliver high performance on a host of rugged jobs ... small-acreage
farming and utility chores, industrial and institutional groundskeeping, club main-
tenance, suburban estate care and similar work.
You'll find feature after feature on the Simplicity 4040 that other tractors simply
don't offer: Features that tailor it ideally to the jobs it's meant to do. Like the
unique combination of hydrostatic drive and 3-speed transmission, that permits
selection of precisely the right combination of power and speed for any job, while
attachments run at peak efficiency. This drive system also affords effortless, con-
venient clutchless ground speed changing and reversing.
The 4040 also offers power takeoffs that
operate independently of the tractor trans-
mission. Driven directly off the engine
through electromagnetic clutches, the
PTOs deliver continuous power to attach-
ments, so work gets done quickly and
efficiently.
The rugged, fast-acting hydraulic lift sys-
tem on the 4040 also helps speed up work
and reduce effort. It lets the operator
position either front-center or rear-mounted
attachments quickly, precisely, with just
the touch of a finger.
Hydrostatic drive and 3-speed transmission.
Only the 4040 offers this combination.
Hydrostatic drive gives an infinite selection
of speeds -- to 10.4 mph forward, 6.2 mph
in reverse controlled by one simple lever,
with no need to de-clutch even when changing
direction. Three-speed gearbox lets you select
the efficient power range for any job. Limited-slip
differential ... reduces wheel-spin under slippery condi-
tions.
,..-".'
Reliable 16-1/2 H. P. Onan Engine. It's demonstrated amazing dependability in
hundreds of thousands of hours. Air-cooled, to end radiator problems. No oil
mixing, thanks to 4-cycle design. Full-pressure lubrication with oil filter. Stellite
valves with rotators. Modern shortstroke over-square design.
Hydraulics. Fast, precise, powerful action for lifting attachments and positioning
them with no operator effort. Driven by hydrostatic system's charge pump. Stand-
ard for center or rear- mounted attachments, optional for front.
Power - Takeoffs. Driven directly from engine, independent of tractor trans-
mission and ground speed. Full engine power is always available to attach-
ments. Front PTa is standard, rear is optional. Electromagnetic PTa clutches
operated by convenient toggle switches on instrument panel.
High ground clearance. The 4040 is a full 15" above the ground, to clear row
crops easily and work better in snow or soft soil. Even with removable draw-
bar in place, clearance is still 13".
Big disc brakes. Plenty of stopping power from two independent disc brakes
on rear wheels. Can be operated independently to aid in steering or controll-
ing slippage, or simultaneously for safe, sure stops.
Operators convenience. Comfortable, convenient, easy to get on or off. Con-
trols all located within easy reach. Instrument panel is easy to read. Seat
adjusts to suit any operator. Footrests and pedals are non-skid for safety.
3-point hitch (optional). A must for farm work,
or any job requiring rear-mounted imple-
ments. Designed for Category "0"
tools. Adjusting screws control attach-
ment tilt.
Tires. Choose the type that fits the
job. Agricultural tires are standard,
with offset wheels that can be re-
versed to vary tread according to
crop spacing. Optional tires of-
fered include turf type, or high-
flotation, or heavy-duty front
tires for use with end loader.
TURF TIRES SHOWN ARE OPTIONAL
,,(
tA\---. ali! ••• plieil"
EQUIPMENT
You're Reading a Preview
What's Included?
Fast Download Speeds
Offline Viewing
Access Contents & Bookmarks
Full Search Facility
Print one or all pages of your manual
$52.99
calcActive())">
Collection of 3 files - Simplicity 4040 Power Max Repair Service Manual & Illustrated Parts Catalog & Operator Manual
Viewed 73 Times Today
What's Included?
Fast Download Speeds
Offline Viewing
Access Contents & Bookmarks
Full Search Facility
Print one or all pages of your manual
$52.99
Loading...
Secure transaction
What's Included?
Fast Download Speeds
Offline Viewing
Access Contents & Bookmarks
Full Search Facility
Print one or all pages of your manual
Description
Fix your Simplicity 4040 Power Max without guessing. This three-file collection gives you the service repair manual, operator manual, and illustrated parts catalog you need to handle everything from routine maintenance to major repairs. Searchable text and detailed diagrams mean you find the answer fast.
Download all three instantly. No subscription, no waiting. Whether you're tracking down a part number, learning the controls, or diagnosing an issue, you've got the factory-trusted guides right in your hands. Get it now and start working.