Winco 35-75 PTO Specifications

WINCO INC. 225 S. CORDOVA AVE. LE CENTER, MN 56057 507-357-6821
SERVICE DEPT. 507-357-6831
www.wincogen.com
INSTALLATION AND
OPERATORS
35-75 PTO
GENERATORS
MANUAL

2REV B
60706-198
TABLE OF CONTENTS
SAVE THESE INSTRUCTIONS 2
SPECIFICATIONS 2
SAFETY INFORMATION 3
ANSI SAFETY DEFINITIONS
TESTING POLICY 4
PREPARING THE UNIT 4
UNPACKING
INSTALLATION 4
FOUNDATION MOUNTING
TRAILER MOUNTING
ELECTRICAL CONNECTIONS 5
OPERATION 6
PRE-START CHECKS 6
GENERATOR PROCEDURES 7
STARTUP
MAINTENANCE 8
GENERAL
LUBRICATION
CLEANING & INSPECTING THE GENERATOR
SHUTDOWN
GENERATOR STORAGE
TROUBLE SHOOTING TABLES 9
WIRING DIAGRAMS 10
36 MONTH LIMITED WARRANTY 12
SAVE THESE INSTRUCTIONS
This manual contains important instructions that should be followed
during installation and maintenance of the generator. Read and
understand all instructions in the manual before starting and operating
the generator.
USING THIS MANUAL
Congratulations on your choice of a WINCO generator. You have
selected a high-quality, precision-engineered generator designed and
tested to give you years of satisfactory service.
To get the best performance from your new generator, it is important
that you carefully read and follow the operating instructions in this
manual.
Should you experience a problem please follow the “Troubleshooting
Tables” near the end of this manual. The warranty listed in the manual
describes what you can expect from WINCO should you need service
assistance in the future.
COPY YOUR MODEL AND SERIAL NUMBER HERE
No other WINCO generator has the same serial number as yours.
If you should ever need to contact us on this unit, it will help us to
respond to your needs faster.
MODEL __________________________________________________
SERIAL NUMBER _________________________________________
PURCHASE DATE _________________________________________
DEALER NAME ___________________________________________
DEALER PHONE # ________________________________________
SPECIFICATIONS
35PTOC-3
Watts 35,000
Phase Single
Voltage 120/240
Power Factor 1.0
Amps 146
Input Speed 540 RPM
Generator Speed 1800 RPM
Input Shaft 1 3/8” - 6 spline
Required Tractor PTO HP 70
40PTOC-4
Watts 40,000
Phase Three
Voltage 120/208
Power Factor 0.8
Amps 139
Input Speed 540 RPM
Generator Speed 1800 RPM
Input Shaft 1 3/8” - 6 spline
Required Tractor PTO HP 80
45PTOC-17
Watts 45,000
Phase Three
Voltage 120/240
Power Factor 0.8
Amps 135
Input Speed 540 RPM
Generator Speed 1800 RPM
Input Shaft 1 3/8” - 6 spline
Required Tractor PTO HP 90

3REV B 60706-198
50PTOC-3
Watts 50,000
Phase Single
Voltage 120/240
Power Factor 1.0
Amps 208
Input Speed 540 RPM
Generator Speed 1800 RPM
Input Shaft 1 3/8” - 6 spline
Required Tractor PTO HP 100
75FPTOC-4
Watts 75,000
Phase Three
Voltage 120/208
Power Factor 0.8
Amps 260
Input Speed 1000 RPM
Generator Speed 1800 RPM
Input Shaft 1 3/8” - 6 spline
Required Tractor PTO HP 150
75FPTOC-4
Watts 75,000
Phase Three
Voltage 120/240
Power Factor 0.8
Amps 225
Input Speed 1000 RPM
Generator Speed 1800 RPM
Input Shaft 1 3/8” - 6 spline
Required Tractor PTO HP 150
SAFETY INFORMATION
This engine generator set has been designed and manufactured to
allow safe, reliable performance. Poor maintenance, improper or
careless use can result in potentially deadly hazards; from electrical
shock, exhaust gas asphyxiation, or re. Please read all safety
instructions carefully before installation or use. Keep these instructions
handy for future reference. Take special note and follow all warnings
on the unit labels and in the manuals.
ANSI SAFETY DEFINITIONS
DANGER:
DANGER indicates an imminently hazardous situation which, if not
avoided, will result in death or serious injury. This signal word is to be
limited to the most extreme situations.
WARNING:
WARNING indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.
CAUTION:
CAUTION indicates a potentially hazardous situation which, if not
avoided, may result in minor or moderate injury. It may also be used to
alert against unsafe practices.
1. ELECTRICAL SHOCK -
The output voltage present in this equipment can cause fatal electric
shock. This equipment must be operated by a responsible person.
A. Do not allow anyone to operate the generator without proper
instruction.
B. Guard against electric shock.
C. Avoid contact with live terminals or receptacles.
D. Use extreme care if operating this unit in rain or snow.
E. Use only three-pronged grounded receptacles and extension
cords.
F. Be sure the unit is properly grounded to an external ground rod
driven into the earth.
2. FIRE HAZARD -
Gasoline and other fuels present a hazard of possible explosion and/
or re.
A. Do not refuel when the engine is running or hot.
B. Keep fuel containers out of reach of children.
C. Do not smoke or use open ame near the generator set or fuel
tank.
D. Keep a re extinguisher nearby and know its proper use.
Fire extinguishers rated ABC by NFPA are appropriate.
E. Store fuel only in an approved container, and only in a well
ventilated area.
F. Follow local codes for closeness to combustible material.
3. DEADLY EXHAUST GAS -
Exhaust fumes from any gasoline engine contain carbon monoxide, an
invisible, odorless and deadly gas that must be mixed with fresh air.
A. Operate only in well ventilated areas.
B. Never operate indoors including attached garages
C. Never operate the unit in such a way as to allow exhaust gases
to seep back into closed rooms (i.e. through windows, walls,
oors).
4. NOISE HAZARD -
Excessive noise is not only tiring, but continual exposure can lead to
loss of hearing.
A. Use hearing protection when working around this equipment for
long periods of time.
B. Keep your neighbors in mind when using this equipment.
5. CLEANLINESS -
Keep the generator and surrounding area clean.
A. Remove all grease, ice, snow or materials that create
slippery conditions around the unit.
B. Remove any rags or other materials that could create a
potential re hazard.
C. Carefully clean up any gas or oil spills before starting the unit.

4REV B
60706-198
Page 3
60706-160 REV 3 3117-30
A. The foundation location should enable aligning the drive
shaft (tumbling bar) in a straight or nearly straight line be-
tween the power take-off and the generator input shaft.
Misalignment must be less than 15 degrees during generator
operation, even though the mechanical design of the tumbling
bar may allow greater misalignment.
B. The foundation must be solid enough to absorb generator
starting and reflected load torque during operation.
C. The foundation surface should be flat.
D. Space is required around the generator for mounting
switching devices, making connections, and for servicing.
E. All four generator mounting pads must rest firmly on the
foundation. Install shims if necessary to even out the founda-
tion under the mounting pads then bolt the generator firmly in
place.
TRAILERMOUNTING
Mount the generator on a trailer if you plan to use it as a
portable power source. See Figure 3. When selecting or
building a trailer to mount the generator, consider the
following points:
Trailer, for Portable Operation
A. The trailer construction must be strong enough to support
the generator.
B. The design of the trailer must enable the trailer to remain
stable during operation, and to resist tipping caused by
generator starting and reflected load torque.
WARNING: Personal Injury & Equipment Damage
TRAILER MAY TIP OVER AND CAUSE INJURIES IF
WHEELS ARE NOT SPACED FAR ENOUGH APART.
C. The trailer height and mounting position of the generator on
the trailer should enable aligning the drive shaft (tumbling bar)
in a straight or nearly straight line between the power take-off
and generator input shafts. Misalignment must be less than
15 degrees during generator operation, even though the
mechanical design of the tumbling bar would allow greater
misalignment.
The following wire sizes are recommended for each unit.
Generator Size
Model AWG Insulation
W85PTOS 4/0 Neoprene/THHN
W100PTOS 4/0 Neoprene/THHN
W105PTOT 4/0 Neoprene/THHN
W135PTOS 350MCM THHN NO Plug Provided
W145PTOT 4/0 THHN NO Plug Provided
W150PTOS 500MCM THHN NO Plug Provided
W165PTOT 1/0 THHN NO Plug Provided
WARNING: Equipment Damage
Never use acid core solder. When soldering insure no excess
solder runs down on the contact surface - Solder on the contact
surface will not allow the contacts to mate properly causing
them to burn up.
Each wire should be stripped back 7/8 of an inch and inserted
into one of the contacts in the plug kit. You will then either need
to solder them together using a good grade of resin core
solder or they can be crimped with an appropriate compres-
sion crimper or both.
Approved Crimping tools are:
1. Anderson Power Products
2. ETC Model HHS hydraulic crimper
3. ITT Blackburn NO. 1640
4. T&B (Thomas & Betts) #TBM5
To complete the assembly of the disconnect plug refer to the
instruction sheet in the plug kit.
WARNING: Electrical Shock
DURING THE NEXT STEP, THE LOAD DISCONNECT PLUG
SHOULD NOT BE PLUGGED INTO ITS RECEPTACLE. ALSO,
MAKE SURE THAT THE EQUIPMENT TO WHICH THE PLUG
LEADS (CABLES) ARE BEING CONNECTED IS NOT ENER-
GIZED (LIVE).
8. Strip the insulation off the free end of each of the plug leads
(cables), and connect them to the load transfer switch (or
directly to the load).
Installation
FOUNDATIONMOUNTING
Mount the generator on a foundation if it is to be used as a
permanent or standby power source (see Figure 2). See
“TRAILER MOUNTING” if generator will be used as a portable
power source (see Figure 3). When planning a foundation
consider the following points:
Figure 2
Figure 3
TESTING POLICY
Before any generator is shipped from the factory, it is fully checked
for performance. The generator is loaded to its full capacity, and the
voltage, current, and frequency are carefully checked.
Rated output of generator is based on engineering tests of typical units,
and is subject to, and limited by, the temperature, altitude, fuel, and
other conditions specied by the manufacturer of applicable engines.
PREPARING THE UNIT
UNPACKING
CAUTION: EQUIPMENT DAMAGE
When you unpack your new generator, be sure to remove all of the
information sheets and manual from the carton.
1. As you receive your unit, it is critical to check it for any damage. If
any damage is noted, it is always easiest to refuse the shipment and
let WINCO take care of the freight claim. If you sign for the unit, the
transfer of the ownership requires that you le the freight claim
2. Before proceeding with the preparations of your new generator
for operation, take a couple of minutes to ensure the unit you have
received is the correct model and review the specication pages in this
manual to ensure that this unit meets your job requirements.
Mount the generator on a foundation if it is to be used as a permanent
or standby power source. When planning a foundation, consider the
following points:
A. The foundation location should enable aligning the drive shaft
(tumbling bar) in a straight or nearly-straight line between the power
take-off and the generator input shaft. Misalignment must be less than
15 degrees during generator operation, even though the mechanical
design of the tumbling bar may allow greater misalignment.
B. The foundation must be solid enough to absorb generator starting
and reected load torque during operation.
C. The foundation surface should be at.
D. Space is required around the generator for mounting switching
devices, making connections, and for servicing.
E. For dimensions needed for your specic generator, please refer to
it’s outline drawing. The hardware needed is dependent on your distinct
application.
F. All four generator mounting pads must rest rmly on the
foundation. Install shims if necessary to even out the foundation under
the mounting pads, then bolt the generator rmly in place.
TRAILER MOUNTING
Mount the generator on a trailer if you plan to use it as a portable
power source. When selecting or building a trailer to mount the
generator, consider the following points:
A. The trailer construction must be strong enough to support the
generator.
B. The design of the trailer must enable the trailer to remain stable
during operation, and to resist tipping caused by generator starting and
reected load torque.
WARNING: PERSONAL INJURY & EQUIPMENT DAMAGE
Trailer may tip over and cause injuries if wheels are not spaced far
enough apart.
C. The trailer height and mounting position of the generator on the
trailer should enable aligning the drive shaft (tumbling bar) in a straight
or nearly straight line between the power take-off and generator input
shafts. Misalignment must be less than 15 degrees during generator
A
A
E
E
E
E
BCD
BCD
X
INSTALLATION
Note: PTO mounting holes are .75”.
FOUNDATION MOUNTING
6. SERVICING EQUIPMENT -
All service, including the installation or replacement of service parts,
should be performed only by a qualied technician.
A. Use only factory approved repair parts.
B. Do not work on this equipment when fatigued.
C. Never remove the protective guards, covers, or receptacle
panels while the engine is running.
D. Use extreme caution when working on electrical components.
High output voltage from this equipment can cause serious
injury or death.
E. Always avoid hot mufers, exhaust manifolds, and engine parts.
They can cause severe burns instantly.
F. The use of the engine-generator set must comply with all
national, state, and local codes.

5REV B 60706-198
ELECTRICAL CONNECTIONS
CAUTION:
Only qualied electricians should install electric wiring. Wringing must
conform to all applicable national, state, and local codes. (Reference:
National Fire Protection Assosiation Manual No. 70, National Electrical
Code.)
DANGER: PERSONAL INJURY
If the generator is to be used as a standby power source, a special
disconnect switch must be installed to separate the generator and the
commercial power lines. The disconnect must isolate the generator
from the commercial power lines and the load when the generator is
on standby, and must isolate the commercial power lines from the load
and generator when the generator is supplying power.
A properly rated and installed double throw manual power isolation
transfer switch must be used with a standby generator. The transfer
switch isolates the load from the power line and allows you to safely
operate your loads without endangering the power line repair crew.
See previous diagrams
The load, connected to the normal terminals of the transfer switch, is
energized by the normal power line when the switch is in the normal
position. The generator, connected to the emergency terminals of the
switch, furnishes power when the switch is in the emergency mode
position.
There are two ways to install a manual transfer switch. The rst is
to install the switch between the watt-hour meter and the normal
distribution panel. As with any system you must install an entrance
rated breaker before the manual transfer switch. The manual transfer
switch must in all cases be equal to or greater than the rating of the
entrance rated breaker.
The second way to install the system is to purchase and install an
emergency distribution panel and move the circuits you wish to back
up to the new distribution panel. In this case the manual transfer switch
only has to be sized to the amperage of the circuit breaker in the main
distribution panel that is feeding it.
Before deciding which system to install, rst determine which loads you
can safely run on your PTO generator and the cost of buying a large
manual transfer switch versus the cost of a smaller switch and the
additional distribution panel.
The only assembly work required after unpacking the generator is to
assemble the load disconnect plug, which is contained in a bag in the
sub-pack carton packed in the generator crate.
The bag contains an instruction sheet, 2 plug bodies, four contacts,
a handle and the hardware to assembly the disconnect plug. You
will need to purchase the appropriate length of ne stranded copper
wire for your application in order to complete the assembly of the
disconnect plug.
The following wire sizes are recommended for each unit.
Model AWG Insulation
35PTOC-3 #2 Neoprene/THHN
40PTOC-4 #4 Neoprene/THHN
45PTOC-17 #4 Neoprene/THHN
50PTOC-3 #1 Neoprene/THHN
75FPTOC-4 #1 Neoprene/THHN
75FPTOC-17 #1 Neoprene/THHN
WARNING: EQUIPMENT DAMAGE
Never use acid core solder. When soldering insure no excess solder
runs down on the contact surface - Solder on the contact surface will
not allow the contacts to mate properly causing them to burn up.
Each wire should be stripped back 7/8 of an inch and inserted into
one of the contacts in the plug kit. You will then either need to solder
them together using a good grade of resin core solder or they can be
crimped with an appropriate compression crimper or both.
Approved crimping tools are:
1. Anderson Power Products
2. ETC Model HHS hydraulic crimper
3. ITT Blackburn No. 1640
4. Thomas & Betts #TBM5
To complete the assembly of the disconnect plug refer to the
instruction sheet in the plug kit.
WARNING: ELECTRICAL SHOCK
During the next step, the load disconnect plug should not be plugged
into its receptacle. Also, make sure that the equipment to which the
Page 360706-198 1004-00
Each wire should be stripped back 7/8 of an inch and inserted
into one of the contacts in the plug kit. You will then either
need to solder them together using a good grade of resin
core solder or they can be crimped with an appropriate
compression crimper or both.
Approved Crimping tools are:
1. Anderson Power Products
2. ETC Model HHS hydraulic crimper
3. ITT Blackburn NO. 1640
4. T&B (Thomas & Betts) #TBM5
To complete the assembly of the disconnect plug refer to the
instruction sheet in the plug kit.
WARNING: Electrical Shock
DURING THE NEXT STEP, THE LOAD DISCONNECT PLUG
SHOULD NOT BE PLUGGED INTO ITS RECEPTACLE.
ALSO, MAKE SURE THAT THE EQUIPMENT TO WHICH THE
PLUG LEADS (CABLES) ARE BEING CONNECTED IS NOT
ENERGIZED (LIVE).
Strip the insulation off the free end of each of the plug leads
(cables), and connect them to the load transfer switch (or
directly to the load).
Installation
FOUNDATION MOUNTING
Mount the generator on a foundation if it is to be used as a
permanent or standby power source (see Figure 2). See
“TRAILER MOUNTING” if generator will be used as a portable
power source (see Figure 3). When planning a foundation
consider the following points:
Figure 2
A. The foundation location should enable aligning the drive
shaft (tumbling bar) in a straight or nearly straight line be-
tween the power take-off and the generator input shaft.
Misalignment must be less than 15 degrees during generator
operation, even though the mechanical design of the tumbling
bar would allow greater misalignment.
B. The foundation must be solid enough to absorb generator
starting and reflected load torque during operation.
C. The foundation surface should be flat.
D. Space is required around the generator for mounting
switching devices, making connections, and for servicing.
E. All four generator mounting pads must rest firmly on the
foundation. Install shims if necessary to even out the founda-
tion under the mounting pads then bolt the generator firmly in
place.
TRAILER MOUNTING
Mount the generator on a trailer if you plan to use it as a
portable power source. See Figure 3. When selecting or
building a trailer to mount the generator, consider the follow-
ing points:
A. The trailer construction must be strong enough to support
the generator.
B. The design of the trailer must enable the trailer to remain
stable during operation, and to resist tipping caused by
generator starting and reflected load torque.
Figure 3
Trailer, for Portable Operation
SINGLE PHASE
4 WIRE CONNECTION
THREE PHASE
5 WIRE CONNECTION
WIRE INSERTS
NOT USED IN ALL
APPLICATIONS
CONTACTS
The 6th contact
must be inserted
but not wired
CONTACTS
All 4 contact
must be used.WIRE INSERTS
NOT USED IN ALL
APPLICATIONS
operation, even though the mechanical design of the tumbling bar
would allow greater misalignment.
D. The generator mounting area of the trailer bed should be at. All
four generator mounting pads must rest rmly on the trailer bed. Install
shims if necessary to even out the bed under the mounting pads, then
bolt the generator rmly in place.

6REV B
60706-198
OPERATION
Output power available and load determination
Before using the generator, read and understand the following
information.
Generator output current (amperage) is internally limited by three circuit
breakers. If too much demand is placed on a generator output (if you
try to drive too many motors with it, for example), one of the circuit
breakers will trip, cutting off the output in order to protect the generator.
A 20 Amp push-to-reset circuit breaker protects the 120V duplex
receptacle output circuit. 20 Amps is the total limit for both outputs of
the duplex receptacle.
A 50 Amp push-to-reset circuit breaker protects the 240V receptacle
output circuit.
A large two pole (three pole for three phase) switch type main
circuit breaker protects the generator windings and output circuits,
including the load disconnect receptacle. On the W145PTOT and the
W150PTOS, you will connect your power output leads directly to the
mainline circuit breaker.
To aid in determining how much load can be applied to the generator,
and how it should be distributed among the generator output
receptacles, the following formulas may be useful. Get load voltages,
current, and wattage from the nameplates on the equipment in the
load.
Load current (in Amps) x Load voltage = Load wattage
Amps x Volts = Watts
Watt/1000 = kW
Load wattage / Load wattage = Load current (in Amps)
Example: 250W, 120V oodlight load: 250W / 120V = 2 Amps (parrots.)
NOTE: Electric motors require more current to start than to run.
Commonly, the current rating given on a motor nameplate is the full
load (running) current required by the motor, not its starting current,
which is a lot higher. Motor starting current requirements vary greatly,
by motor size and type. Repulsion-induction type motors are the
easiest to start, typically using 1 1/2 to 2 1/2 times as much current to
start as to run; capacitor type motors usually require 2 to 4 times as
much current to start as to run; split-phase type motors are the hardest
to start, normally using 5 to 7 times as much current to start as to run.
Motor Load Single Phase Three Phase
Motor HP Amps Amps Amps Amps
115 V 230V 208V 240V
1/4 5.8 2.9 - -
1/3 7.2 3.6 - -
1/2 9.8 4.9 2.3 2.0
3/4 13.8 6.9 3.2 2.8
1 16 8 4.15 3.6
1 1/2 20 10 6.0 5.2
2 24 12 7.8 6.8
3 34 17 11 9.6
5 56 28 17.5 15.2
7 1/2 80 40 25 22
10 100 50 32 28
20 - - 62 54
40 - - 120 104
The previous table was compiled from the NEC Manual. Amps shown
are running amps.
To use the full capacity of the generator without tripping circuit
breaker(s), start the motor rst, next highest second, etc. Use the
preceding table as a source of general information about motor
running current requirements. For more specic information, see motor
nameplate or motor manufacturer’s catalog.
PRE-START CHECKS
WARNING: PERSONAL INJURY:
When working on or around these generators, do NOT wear loose
tting clothing or any articles that may get caught in moving parts.
1. Visually inspect the generator. Check for:
a. Correct mounting.
b. Physical damage.
Page 4 60706-198
1004-00
WARNING: Personal Injury & Equipment Damage
TRAILER MAY TIP OVER AND CAUSE INJURIES IF
WHEELS ARE NOT SPACED FAR ENOUGH APART.
C. The trailer height and mounting position of the generator on
the trailer should enable aligning the drive shaft (tumbling bar)
in a straight or nearly straight line between the power take-off
and generator input shafts. Misalignment must be less than
15 degrees during generator operation, even though the
mechanical design of the tumbling bar would allow greater
misalignment.
D. The generator mounting area of the trailer bed should be
flat. All four generator mounting pads must rest firmly on the
trailer bed. Install shims if necessary to even out the bed
under the mounting pads, then bolt the generator firmly in
place.
Typical Connection Methods for Generator Power Service
Figure 5
To
Range
To
Range
To Water
Heater
To
Water
Heater
To Lights To
Lights
To
Lights
To
Lights
To Lights
To Refrig.
To
Refrig.
To Appliances
To
Appliances
To Furnace To
Furnace
To Lights
To Air
Conditioner
Transfer
Switch
Transfer
Switch
Watthour
Meter
To Power Line Master Switch
TYPICAL HOOK UP FOR
SUPPLYING ALL CIRCUITS
WITH EMERGENCY POWER
IMPORTANT: When making standby service hook up, make sure load to be
transferred to standby generator will not exceed generator rating.
TYPICAL HOOK UP FOR
SUPPLYING ONLY ESSENTIAL CIRCUITS
WITH EMERGENCY POWER
To Power Line Master Switch
Watthour
Meter
Standby
Generator
Standby
Generator
To Air
Conditioner
Distribution
Panel Emergency
Distribution
Panel
Emergency
Power
System
Emergency
Power
System L1
L1
L3
L3
T3
T3
T1
T1
G3
G3
G1
G1
Main
Distribution
Panel
plug leads (cables) are being connected is not energized (live).
Strip the insulation off of the free end of each of the plug leads (cables)
and connect them to the load transfer switch or directly to the load.

7REV B 60706-198
c. Debris in cooling vents and screens. (Could cause generator to
overheat)
IMPORTANT:
The manufacturer recommends that, if the generator has been stored
for any length of time, before using it, the operator remove the control
box cover and cooling fan screen, then inspect the generator for rodent
nests or other objects that could cause generator binding and/or
overheating. See ‘Cleaning’ portion of the Maintenance section.
2. Check Gearcase oil level. (See drawing) Case should be lled with
oil to plug marked ‘OIL LEVEL’. Fill or remove oil as required.
NOTE: Either too little or too much
oil can harm the equipment.
See ‘Lubrication” portion of
Maintenance for oil specications.
3. Make sure the drive shaft (tumbling bar) is assembled with its
universal joint knuckles “synchronized,” as illustrated below. If knuckles
are not synchronized, the bar will chatter when rotating, which will
cause the generator output voltage to icker. Drive shafts shipped new
from Winco are always synchronized and tethered so they can not be
taken apart.
DANGER: PERSONAL INJURY:
Power take-off must be disengaged at this time.
4. Couple the tractor to the generator with the drive shaft (tumbling
bar). Couple the tumbling bar to the generator input shaft rst, then to
the power take-off shaft. Check alignment, tractor, power take-off shaft
(tumbling bar), and generator input shaft should form a straight (or
nearly straight) line, with less than 5° misalignment between the shafts.
Misalignment will cause generator output voltage to icker.
WARNING: PERSONAL INJURY:
Page 6 60706-198 1004-00
5. Make sure no binding exists in generator or gear box. If
binding is found, locate the cause and correct it before pro-
ceeding.
6. Make sure that the electrical loads to be driven by the gen-
erator will not draw more current than the ratings of the gen-
erator receptacle or cord set which will supply the current.
7. Check all electrical connections in the system to be ener-
gized by the generator. Make sure the connections are correct
and are tight.
8. Make sure all loads are turned off. Do not start the genera-
tor under load.
GENERATOR STARTING
PROCEDURE
1. Set the manual transfer to mid or normal (up)
position.
2. With the power take-off drive disengaged, start the engine
which will drive the generator. Run the engine long enough to
warm it up before proceeding, so that it will run smoothly and
achieve full power under generator load.
3. With engine idling, engage the power take-off drive.
4. Watch the voltmeter on the generator and slowly increase
engine speed until the output reaches approximately 240 to
245 volts (208 to 212 for 208 volt generator), in green portion
of voltmeter scale.
5. Plug load cord set into receptacle. Place transfer switch in
the emergency position.
6. Place the load circuit breaker in the “on” position. If the
breaker trips, move manual transfer switch to “off” or normal
position. Check for short circuit or grounded connection in the
load cable to the double throw switch and repair. A breaker
that trips from overload or short circuit must be reset by
moving to “off” before reclosing.
7. With engine and generator running smoothly, switch on
the electrical load while watching the voltmeter. Readjust en-
gine throttle to keep generator output under load at 240V (208
V if applicable) in green portion of voltmeter scale. If engine is
equipped with speed governor, it may automatically readjust
the throttle as the load changes and keep the generator output
at the proper level. However, some governors are not sensitive
enough to maintain proper output under changing load, and in
such cases the throttle will have to be manually readjusted .
NOTE: Equipment Damage
If the load includes motors turn them on one at a time,
highest starting current motor first, next highest second,
etc.
8. The return of normal power will be indicated by the
2. Check gear case oil level. (See Figure 6.) Case should be
filled with oil to plug marked “OIL LEVEL.” Fill or remove oil as
required.
Figure 6
NOTE: EITHER TOO LITTLE OR TOO MUCH OIL CAN HARM
THE EQUIPMENT.
See “Lubrication” portion of Maintenance for oil specifications.
3. Make sure the drive shaft (tumbling bar) is assembled with
its universal joint knuckles “synchronized,” as illustrated in
Figure 7. If knuckles are not synchronized, the bar will chatter
when rotating, which will cause the generator output voltage to
flicker.
Figure 7
DANGER: Personal Injury
POWER TAKE-OFF MUST BE DISENGAGED AT THIS TIME.
4. Couple the tractor to the generator with the drive shaft
(tumbling bar). Couple the tumbling bar to the generator input
shaft first, then to the power take-off shaft. Check alignment,
tractor, power take-off shaft (tumbling bar), and generator input
shaft should form a straight (or nearly straight) line, with less
than 15° misalignment between the shafts. Misalignment will
cause generator output voltage to flicker.
CAUTION:
Make sure that all tumbling bar lock pins are engaged and
that all safety shields are in place before operating the PTO
generator.
Page 6
60706-180 0310-00
3. Make sure the drive shaft (tumbling bar) is assembled with
its universal joint knuckles “synchronized,” as illustrated in
Figure 7. If knuckles are not synchronized, the bar will chat-
ter when rotating, which will cause the generator output volt-
age to flicker. Drive shafts shipped new from Winco are al-
ways synchronized and tethered so they can not be taken
apart.
DANGER: Personal Injury
POWER TAKE-OFF MUST BE DISENGAGED AT THIS TIME.
4. Couple the tractor to the generator with the drive shaft (tum-
bling bar). Couple the tumbling bar to the generator input
shaft first, then to the power take-off shaft. Check align-
ment, tractor, power take-off shaft (tumbling bar), and gen-
erator input shaft should form a straight (or nearly straight)
line, with less than 10° misalignment between the shafts.
Misalignment will cause generator output voltage to flicker.
CAUTION:
Make sure that all tumbling bar lock pins are engaged and that
all safety shields are in place before operating the PTO
generator.
5. Make sure no binding exists in generator or gear box. If
binding is found, locate the cause and correct it before pro-
ceeding.
6. Make sure that the electrical loads to be driven by the gen-
erator will not draw more current than the ratings of the gen-
erator receptacle or cord set which will supply the current.
7. Check all electrical connections in the system to be ener-
gized by the generator. Make sure the connections are cor-
rect and are tight.
8. Make sure all loads are turned off. Do not start the genera-
tor under load.
GENERATOR STARTING
PROCEDURE
1. Set the manual transfer to mid or normal (up)
position.
2. With the power take-off drive disengaged, start the engine
which will drive the generator. Run the engine long enough
to warm it up before proceeding, so that it will run smoothly
and achieve full power under generator load.
3. With engine idling, engage the power take-off drive.
4. Watch the voltmeter on the generator and slowly increase
engine speed until the output reaches approximately 240 to
245 volts, in green portion of voltmeter scale.
5. Plug 4 wire load cord set into receptacle. Place transfer
switch in the emergency position.
6. Place the load circuit breaker in the “on” position. If the
breaker trips, move manual transfer switch to “off” or
normal position. Check for short circuit or grounded
connection in the load cable to the double throw switch and
repair. A breaker that trips from overload or short circuit
must be reset by moving to “off” before reclosing.
7. With engine and generator running smoothly, switch on the
electrical load while watching the voltmeter. Readjust en-
gine throttle to keep generator output under load at 240V
(in green portion of voltmeter scale). If engine is equipped
with speed governor, it may automatically readjust the
throttle as the load changes and keep the generator output
at the proper level. However, some governors are not sen-
sitive enough to maintain proper output under changing
load, and in such cases the throttle will have to be manually
readjusted .
NOTE: Equipment Damage
If the load includes motors turn them on one at a time,
highest starting current motor first, next highest second,
etc.
8. The return of normal power will be indicated by the
lamp on the front of transfer switch; (applicable only when
the transfer switch is equipped with indicating lamps or
your electrician has installed them). After sufficient time to
assure that power restoration isn’t temporary, return the
transfer switch to normal power (10 - 20 minutes).
9. Place the alternator circuit breaker in “off” position. Do not
remove plug before opening the breaker.
10. Slowly reduce power take-off speed to a minimum and
disengage the power take-off. Some tractors have a brake
on the power take-off that stops the shaft instantly. Stop-
ping the alternator rotor instantly from rated speed may
result in a broken shaft or other drive line failures.
WARNING: Personal Injury
Never try to manually stop the generator. Always let it
coast until it stops.
11. Shut off the engine.
12. Disconnect drive shaft (tumbling bar)
power take-off end first, then generator end.
13. Exercise PTO alternator for one hour under load at least
twice a year.
GENERATOR PROCEDURES
STARTUP
1. Set the manual transfer to mid or normal (up) position.
2. With the power take-off drive disengaged, start the engine which will
drive the generator. Run the engine long enough to warm it up before
proceeding, so that it will run smoothly and achieve full power under
generator load.
3. With the engine idling, engage the power take-off drive.
4. Watch the voltmeter on the generator and slowly increase engine
speed until the output reaches approximately 240 to 245 Volts (208 to
212 for 208 Volt generator), in green portion of voltmeter scale.
5. Plug load cord set into receptacle. Place transfer switch in the
emergency position.
6. Place the load circuit breaker in the “on” position. If the breaker trips,
move manual transfer switch to “off” or normal position. Check for short
circuit or grounded connection in the load cable to the double throw
switch and repair. A breaker that trips from overload or short circuit
must be reset by moving to “off” before re-closing.
7. With engine and generator running smoothly, switch on the electrical
load while watching the voltmeter. Readjust engine throttle to keep
generator output under load at 240V (208V if applicable) in green
portion of voltmeter scale. If engine is equipped with speed governor, it
may automatically readjust the throttle as the load changes and keep
the generator output at the proper level. However, some governors are
not sensitive enough to maintain proper output under changing load,
and in such cases the throttle will have to be manually readjusted.
NOTE: EQUIPMENT DAMAGE
If the load includes motors, turn them on one at a time, highest starting
current motor rst, next highest second, etc.
Adjust engine throttle to keep generator output under load at 60Hz.
If the engine is equipped with a governor, it may automatically adjust
the throttle as the load changes and keep the generator output at the
proper level. However, some governors are not sensitive enough to
maintain proper output under changing loads, and in such cases, the
Make sure that all tumbling bar lock pins are engaged and that all
safety shields are in place before operating the PTO generator.
5. Make sure no binding exists in generator or gear box. If binding is
found, locate the cause and correct it before proceeding.
6. Make sure that the electrical loads to be driven by the generator will
not draw more current than the ratings of the generator receptacle or
cord set which will supply the current.
7. Check all electrical connections in the system to be energized by the
generator. Make sure the connections are correct and are tight.
8. Make sure all loads are turned off. Do not start the generator under
load.

8REV B
60706-198
frequency will have to be monitored closely and manually adjusted.
SHUTDOWN
1. Switch off electrical load.
2. Reduce Speed of engine driving generator to idle.
3. Disengage power take-off drive, and allow generator to coast to a
stop.
WARNING: PERSONAL INJURY
Never try to stop the generator. Alway let it coast until it stops.
4. Shut off the engine.
5. Disconnect the drive shaft (tumbling bar) power take-off end rst,
then the generator end.
MAINTENANCE
CAUTION: EQUIPMENT DAMAGE
Most electrical equipment in North America operates satisfactorily at
frequencies between 59 and 61 Hz (cycles per second).Operating the
generator at frequencies outside that range may cause damage to the
generator and/or to electrical equipment driven by the generator.
GENERAL
Routine preventative maintenance minimizes costly repairs and
generator downtime. Before each use, inspect the generator: gear
case oil level should be correct, cooling vents and screens should be
clear, and generator mounting hardware should be tight. Clean and
inspect the generator after storing it for long periods, and after using
it in extremely dusty conditions or in severe weather, such as rain or
blowing snow.
LUBRICATION
The generator bearings are factory lubricated and sealed, and require
no further lubrication.
The splined generator input shaft should be cleaned and lubricated with
thin lm of grease before and after each use of the generator.
The drive shaft (tumbling bar) requires greasing. Keep the universal
joints in the coupling shaft free from grease and dirt buildup.
NOTE:
Do not over lubricate the universal joints.
See following illustration for recommended lubrication schedule for the
coupling shaft.
Check the generator gear case oil level before each use of the
generator. Maintain the oil level at oil level plug height. The generator is
shipped with lubricant in the gearcase. Specications for the gearcase
lubricant are:
API Service: GL-5
Grade: SAE 85W-90-140
Amount: 1 Pint
CAUTION: EQUIPMENT DAMAGE
Do not overll generator gearcase. Overlling causes overheating and
oil seal failure.
Change the oil at least once every six months. Change it more often if
you use the generator in bad weather. Use the following procedure to
change the generator gearcase oil.
1. Remove gearcase breather. Soak breather in cleaning solvent, then
allow to dry.
2. Remove oil level plug. See illustration.
3. Remove the oil drain plug, drain the oil into a clean oil resistant
container, 1 quart or larger. Check the oil for metal. Fine metal dust
in the oil does not indicate trouble, but metal chips do. Dismantle the
gearcase and look for damaged gears if you nd metal chips in the oil.
4. Replace the oil drain plug. Rell the gearcase through the breather
port with new oil of the recommended type. Fill the case up to the oil
level check plug height. About 1 pint.
5. Replace the oil level check plug.
6. Replace the breather.
CLEANING & INSPECTING THE GENERATOR
Use a vacuum cleaner or dry low pressure compressed air (regulated
at 25-35PSI) to clean the generator periodically.
WARNING: EQUIPMENT DAMAGE
Do NOT clean the generator while it is running.
Proceed as follows:
1. Remove ventilated control box cover. Vacuum or blow vents and
screen clear of dust or debris. Wash them down with cleaning solvent if
necessary.
Page 7
60706-160 REV 3 3117-30
5. Shut off the engine.
4. Disconnect drive shaft (tumbling bar) power take-off end
first, then generator end.
MAINTENANCE
The following chart lists various symptoms of poor generator
operation with possible causes for them and the appropriate
corrective action. You will need a volt-ohm meter or test light to
check some of the causes. For some of the other causes you
will need to check generator speed. To check the generator
speed you can use the frequency meter on the generator
control panel.
CAUTION: Equipment Damage
Most electrical equipment in North America operates satisfac-
torily at frequencies between 59 and 61 Hz (cycles per
second.) Operating the generator at frequencies outside that
range may cause damage to the generator and/or to electrical
equipment driven by the generator.
GENERAL
Routine preventive maintenance minimizes costly repairs and
generator downtime. Before each use, inspect the generator:
gear case oil level should be correct, cooling vents and
screens should be clear, and generator mounting hardware
should be tight. Clean and inspect the generator after storing it
for long periods, and after using it in extremely dusty condi-
tions or in severe weather, such as rain or blowing snow.
LUBRICATION
The generator bearings are factory lubricated and sealed, and
require no further lubrication.
The splined generator input shaft should be cleaned and
lubricated with a thin film of grease before and after each use
of the generator.
The drive shaft (tumbling bar) requires greasing. Keep the
universal joints in the coupling shaft free from grease and dirt
buildup.
NOTE:
Do not over lubricate the universal joints.
See Figure 8 for recommended lubrication schedule for the
coupling shaft.
Check the generator gear case oil level before each use of the
generator. Maintain the oil level at oil level plug height. (Figure
6 illustrates oil level plug location.) The generator is shipped
with lubricant in the gear case. Specifications for gear case
lubricant are:
API Service: GL-5
Grade: SAE 85W-9O-140
Amount: 1 pint
The following kinds of oil are recommended for use in the
generator gear case: Mobil SAE 85W90-140 API Service GL-5,
Sunoco/DX XL80W90-140 Kendal Three Star 85W-140,
Amoco 85W140 or equivalent.
CAUTION: Equipment Damage
Do not overfill generator gear case. Overfilling causes over-
heating and oil seal failure.
Change the oil at least once every six months. Change it more
often if you use the generator in bad weather. Use the follow-
ing procedure to change generator gear case oil (see Figure
6):
1. Remove gear case breather. Soak breather in cleaning
solvent, then allow it to dry.
2. Remove oil level check plug.
3. Remove the oil drain plug, drain the oil into a clean oil
resistant container, 1 quart or larger. Check the oil for metal.
Fine metal dust in the oil does not indicate trouble, but metal
chips do. Dismantle the gear case and look for damaged
gears if you find metal chips in the oil.
4. Replace the oil drain plug. Refill the gear case through the
breather port with new oil of the recommended type. Fill the
case up to oil level check plug height. (It will take about 1 pint.)
Figure 8
Page 6 60706-160 REV 3
3117-30
6. Make sure that the electrical loads to be powered by the
generator will not exceed the current ratings of the generator,
receptacle, or cord set which will supply the current.
7. Check all electrical connections in the system to be
energized by the generator. Make sure the connections are
correct and tight and the load disconnect plug (if provided) is
fully seated in the receptacle.
8. Make sure all loads are turned off. Do not start the generator
under load.
GENERATORSTARTINGPROCEDURE
1. With the power take-off drive disengaged, start the engine
which will drive the generator. Run the engine long enough to
warm it up before proceeding, so that it will run smoothly and
achieve full power under generator load.
2. With engine idling, engage the power take-off drive.
3. Watch the frequency meter on the generator and slowly
increase engine speed until the frequency reaches approxi-
mately 60 Hz. The voltage output of the generator is controlled
by an Automatic Voltage Regulator (AVR). Before turning on
any load check your voltage output from the generator using a
volt/ohm meter. If the voltage is either high or low adjust the
voltage level by turning the voltage adjustment screw on the
AVR. The AVR is located inside the generator control cabinet.
Once the proper voltage level is set the AVR should bring the
voltage back to the same level each time the unit is started up.
But as a precaution it should be checked each time you use
the generator. As quick check you can plug in a troublelight
and check for normal brightness.
4. With engine and generator running smoothly, switch on the
electrical load while watching the frequency meter.
NOTE: Equipment Damage
If the load includes motors turn them on one at a time, highest
starting current motor first, next highest second, etc.
Adjust engine throttle to keep generator output under load at
60 Hz. If the engine is equipped a with governor, it may
automatically adjust the throttle as the load changes and keep
the generator output at the proper level. However, some
governors are not sensitive enough to maintain proper output
under changing loads, and in such cases the frequency will
have to be monitored closely and manually adjusted .
GENERATORSHUTDOWNPROCEDURE
1. Switch off electrical load.
2. Reduce speed of engine driving generator to idle.
3. Disengage power take-off drive, and allow generator to
coast to a stop.
WARNING: Personal Injury
Never try to manually stop the generator. Always let it coast
until it stops.
3. Make sure the drive shaft (tumbling bar) is assembled with
its universal joint knuckles “synchronized,” as illustrated in
Figure 7. If knuckles are not synchronized, the bar will chatter
when rotating, which will cause the generator output voltage to
flicker.
DANGER: Personal Injury
POWER TAKE-OFF MUST BE DISENGAGED AT THIS TIME.
4. Couple the tractor to the generator with the drive shaft
(tumbling bar). Couple the tumbling bar to the generator input
shaft first, then to the power take-off shaft. Check alignment of
tractor, power take-off shaft (tumbling bar), and generator input
shaft should form a straight (or nearly straight) line, with less
than 15° misalignment between the shafts. Misalignment will,
stress the drive line and cause generator output voltage to
flicker.
CAUTION:
Make sure that all tumbling bar lock pins are engaged and
that all safety shields are in place before operating the PTO
generator.
5. Make sure no binding exists in generator or gear box. If
binding is found, locate the cause and correct it before
proceeding.
Figure 7
Figure 6

9REV B 60706-198
2. Remove cooling fan shroud. Vacuum or blow dust from screen and
fan blades. Wipe them off with cleaning solvent if necessary.
3. Vacuum or blow dust and other debris from inside generator and
control box.
GENERATOR STORAGE
Before storing the generator, apply a heavy coat of grease to the
splined input shaft. Store the generator in a sheltered area, where it is
protected against snow, rain, and excessive dust.
SYMPTOM CAUSE(S) CORRECTIVE ACTION
No output voltage 1. Circuit breaker open
2. Defective frequency meter
3. short circuit in the load
4. defective receptacles
5. Loose (or broken) wires or connections
in control box
6. Defective rotating rectier
7. Defective AVR
8. Shorted or open rotor
9. Shorted or open stator
1. Reset circuit breakers, replace if defective
2. Check output with another meter, replace meter if defective.
3. Disconnect the load. Check voltage at receptacle cord set.
Check motors, appliances, and load leads for short circuit.
Repair short.
4. Remove panel cover and check for voltage to the
receptacles. Replace defective receptacles.
5. Remove panel cover and check all wiring and connections.
Tighten and/or repair where necessary.
6. Test rectier. Replace if defective.
7. Repair or replace as required.
8. Measure rotor resistance. Replace rotor if open or shorted.
9. Measure between leads for open r short. Replaces stator if
defective.
High voltage 1. Defective or misadjusted AVR 1. Adjust, repair, or replace as required
Low voltage 1. Engine speed too low
2. Generator overloaded
3. Inadequate engine horsepower.
4. Defective or misadjusted AVR
1. Check engine speed. Increase RPM if necessary.
2. Reduce load if it is higher than the rated capacity of the
generator. (see generator nameplate)
3. Generator requires 2 HP/1000 watt output. Obtain larger
engine if necessary.
4. Repair, adjust, or replace as required.
Output voltage
ickering or uctuation
1. Tumbling bar (shaft) misalignment
2. Engine governor may be worn or
improperly adjusted. Set or repair
defective governor.
3. Loose connection in eld circuit
4. Tumbling bar U-Joints not synchronized
1. Reduce tumbling bar misalignment to less than 15 degrees
2. Engine governor may be worn or improperly adjusted. Set or
repair defective governor.
3. Check and tighten connections.
4. Reassemble tumbling bar.
Excessive vibration 1. Power take-off misalignment excessive
2. Loose mounting nuts and bolts or hold
down studs
3. Universal joints in coupling shaft worn
or dry.
4. Defective bearings
1. Correct misalignment. It should be less than 15 degrees.
2. Tighten mounting buts and bolts; repair hold down stud
mountings.
3. Repair or replace defective parts.
4. Check for possible causes. Replace defective bearings.
Generator overheating 1. Poor ventilation
2. Generator overloaded
3. Shorted turns in eld or stator windings.
1. Clean ventilation and cooling fan screens.
2. Reduce load, then check voltage and current.
3. Replace defective components.
Oil Leak 1. Loose plug in gearcase
2. Defective seal, gasket, or plug in
geargase
1. Tighten plug.
2. Replace seal(s), gaskets or plugs. Maintain correct oil level.
TROUBLE SHOOTING TABLES

10 REV B
60706-198
WIRING DIAGRAMS
35PTOC-3
&
50PTOC-3
40PTOC-4
&
75FPTOC-4

11REV B 60706-198
45PTOC-17
&
75FPTOC-17

12 REV B
60706-198
WINCO INC. • 225 S. CORDOVA AVE. • LE CENTER, MN 56057 • 507-357-6821
36 MONTH LIMITED WARRANTY
WINCO, Inc., warrants for thirty-six months from date of shipment, that it will repair or replace at its option, for the original
user, the whole or any part of the product found upon examination, by WINCO at its factory at 225 South Cordova
Avenue, Le Center, Minnesota, or by any factory-authorized service station, to be defective in material or workmanship
under normal standby use (average less than 50 hours per month) and service.
For warranty service, return the product within 36 months from the date of purchase, transportation charges prepaid, to
your nearest factory-authorized service station or the WINCO factory. THERE IS NO OTHER EXPRESS WARRANTY.
There is no other express warranty. To the extent permitted by law, any and all warranties, including those of
merchantability and tness for a particular purpose, are limited to 36 months from date of shipment, and liability for
incidental or consequential damages or expenses is excluded. Some states do not allow limitations on the duration of an
implied warranty, and some states do not allow the exclusion or limitation of incidental or consequential damages, so that
above limitation or exclusion may not apply to you. This warranty gives you specic legal rights; you may have other
rights which vary from state to state. Note: Some states do not allow limitation on the duration of implied warranty and
some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitations may
not apply in every instance. This warranty gives you specic legal rights which may vary from state to state.
EXCLUSIONS:
WINCO does not warrant drive lines, trailer tires, receptacles, or certain other component parts of the product installed by
others, since such items are warranted by their manufacturers.
WINCO does not warrant modications or alterations which were not made or authorized by the WINCO factory and
which affect the stability or reliability of the product.
WINCO does not warrant products which have been exposed to misuse and/or negligence or have been involved in an
accident.
WINCO does not warrant products which have been installed in such a manner as not to protect them from the adverse
environmental conditions (water, mud, insects, etc.) or have not been kept clean.
WINCO reserves the right to change or improve its products without incurring any obligations to
make such changes or improvements on products purchased previously.
This warranty is limited to bench labor and parts only, no allowance will be made for travel time, or removal and
reinstallation of the PTO unit.