Dayton 3WY47, 3WY46 User Manual
Operating Instructions & Parts Manual
Version B - For Reduction G016.J
Please read and save these instructions. Read carefully before attempting to assemble, install, operate or maintain the product described.
Protect yourself and others by observing all safety information. Failure to comply with instructions could result in personal injury and/or
property damage! Retain instructions for future reference.
®
3TE27A, 3WY45, and 3WY46
Dayton ProfessionalDuty Electric Generators
3WY47, 3W735B, 3W736C, 3WY44,
Description
Dayton professional-duty generators are rugged and compact to provide dependable,
trouble-free service. The alternators are brushless with revolving fields. Honda gasoline
engines provide long life under heavy use. Overhead valves (OHV) provide high performance with lower fuel consumption. These engines are governed to maintain engine
speed of 3600 RPM under load. 3600 RPM engine speed provides 120/240V, 60 Hz
power. Additional features include circuit breaker protection, spark-arresting muffler
(except Model 3WY47), large fuel tank, and oil alert system. Models 3WY45, 3WY46,
and 3WY47 include electric starter.
Figure 1 – Model 3W735B
Unpacking
1. Remove generator from carton.
2. Remove any protective packaging
applied to generator for shipment.
3. Check for loose or missing parts. Check
for shipping damage. If any parts are
missing or damaged, promptly inform
dealer where you bought generator.
4. Battery cables are supplied for Models
3WY45, 3WY46, and 3WY47 only.
These cables are in a separate bag inside
generator carton. You must install these
cables to engine. See “Battery,” page 8
for installation instructions.
Model 3WY47 only: handles and top
cover packaged separately inside
generator carton. You must install these
parts.
Figure 2 – Models 3W736C, 3WY44, 3WY46, 3TE27A, and 3WY45
Form 5S4175
Printed in U.S.A.
03430
0803 / 253 / VCPVP
Figure 3 – Model 3WY47
®
Dayton Operating Instructions and Parts Manual 3WY47, 3W735B, 3W736C, 3WY44, 3TE27A, 3WY45, and 3WY46
®
Dayton Professional-Duty
Electric Generators
Specifications
ELECTRICAL SPECIFICATIONS
Model Wattage* 120V 240V
3W735B 2,200 18.3 —
3W736C 4,000 33.3 16.7
3WY44 5,000 41.7 20.8
3WY46 5,000 41.7 20.8
3TE27A 6,000 50 25
3WY45 7,000 60 30
3WY47 10,000 83.3 41.7
* Single-phase, 1.0 power factor
NOTE: Ratings apply to SAE standard conditions. Reduce ratings 3
above 60°F.
GENERAL SPECIFICATIONS
Model Engine H.P. Model Type Capacity System Start (pounds)
3W735B 5.5 GX160K1VX Gasoline 3.9 qt. Yes No 85
3W736C 8 GX240K1VA Gasoline 5 gal. Yes No 139
3WY44 9 GX270VA Gasoline 8 gal. Yes No 173
3WY46 9 GX270VDE Gasoline 8 gal. Yes Yes 175
3TE27A 11 GX340K1VA Gasoline 8 gal. Yes No 191
3WY45 13 GX390K1VXE Gasoline 8 gal. Yes Yes 247
3WY47 20 GX620VXA3 Gasoline 13 gal. Yes Yes 347
RECEPTACLE SPECIFICATIONS
Model Duplex Twist-Lock Twist-Lock Twist-Lock Receptacle Power Switch
3W735B Yes No No No No No
3W736C Yes Yes Yes No No Yes
3WY44 Yes Yes Yes No No Yes
3WY46 Yes Yes Yes No No Yes
3TE27A Yes Yes Yes No No Yes
3WY45 Yes Yes No Yes No No
3WY47 Yes Yes No Yes Yes No
ELECTRICAL COMPONENT SPECIFICATIONS
Model Winding * Winding ∆ Winding † Winding † 450 Volt 800 Volt
3W735B 1.95 5.2 6.79 1.31 16 6 Amp
3W736C 0.71 2.17 0.54 2.07 40 70
3WY44 0.54 1.38 0.61 2.29 50 70
3WY46 0.54 1.38 0.61 2.29 50 70
3TE27A 0.37 1.01 0.68 2.57 60 70
3WY45 0.28 0.78 0.77 2.9 70 70
3WY47 0.40 0.90 0.37 0.50 80 70
(*) Connect T2 (Green) and T3 (Black). Measure resistance between T1 (Red) and T4 (Yellow).
(∆) Resistance between brown and white leads.
(†) Remove diodes to check resistance.
Rated Rated Amperage Rated Amperage
1
/2% for each 1000 feet above sea level and 1% for each 10°F rise
Honda Honda Fuel Fuel Tank Oil Alert Electric Weight
120V 120V, 30-Amp 120/240V, 20-Amp 120/240V, 30-Amp 120/240V, 50-Amp 120V Full
Stator Stator Rotor Rotor Capacitor,
Main Auxiliary Primary Secondary MFD Diodes (2)
Resistance in Ohms
2
Dayton Operating Instructions and Parts Manual
Version B - For Reduction G016.J
Models 3WY47, 3W735B, 3W736C, 3WY44, 3TE27A,
3WY45, and 3WY46
Product Identification
Gas Cap/Fuel Gauge
GFCI Receptacle
FUEL
Control Panel
F
Full Power
Selector
Switch
120 Volt
Receptacles
Hour Meter
120/240 Volt
Receptacle
120 VOLTS
RESET
TEST
FULL POWER
1
2
0
O
N
L
Y
E
N
0
0
0
0
H
O
U
R
S
Circuit
Breaker
Choke Lever
Fuel Valve Lever
Starter Grip
Roll Cage
1
2
0
2
4
0
V
12
0
/2
4
0
V
O
L
T
S
M
0
0
0
R
5
E
S
E
T
1
/
1
0
R
E
S
E
T
FUEL
F
Gas Tank
Figure 4 – Portable Generator (Model 3W736C Shown)
Engine
Engine ON/OFF
Switch (not
shown)
3
Oil Dipstick
Alternator
Ground
Lug
®
Dayton Operating Instructions and Parts Manual 3WY47, 3W735B, 3W736C, 3WY44, 3TE27A, 3WY45, and 3WY46
®
Dayton Professional-Duty
Electric Generators
General Safety Information
IMPORTANT: Read these instructions and
engine owner’s manual carefully. Become
familiar with generator before trying to
operate or service it. Know its uses, limitations, and any hazards involved. Improper
use of generator can cause severe injury or
death from explosion, fire, burns, electrical
shock, or carbon monoxide poisoning.
Make certain you read and understand all
warnings. Keep these instructions for
reference. They are your guide to safe and
proper operation of this generator.
Safety information appears throughout
these instructions. Pay close attention to
them. Below are definitions for the safety
information listed throughout this manual.
IMPORTANT: Every possible circumstance
that might involve a hazard cannot be
anticipated. The warnings in this manual
and on tags or decals affixed to the unit
are therefore not all-inclusive. If a procedure, work method, or operating technique not specifically recommended by
Dayton is used, you must make sure it is
safe for you and others. You should also
ensure that equipment will not be
damaged or made unsafe by the operating
or maintenance method you choose.
NOTE: Under this heading statements will
be found emphasizing installation, operation
and maintenance procedures that either
simplify procedures or increase efficiency.
Under this heading,
installation, operating, and maintenance procedures or
practices will be found that, if not carefully
followed, WILL result in IMMEDIATE
serious personal injury or death.
Under this heading,
installation, operating, and maintenance procedures or
practices will be found that, if not carefully
followed, COULD result in severe personal
injury or death.
Under this heading,
installation, operating, and maintenance procedures or
practices will be found that, if not carefully
followed, MAY result in minor personal
injury, product or property damage.
Engine exhaust
contains poisonous
carbon monoxide gas. Overexposure
will cause loss of consciousness and
will lead to death. Use only in wellvented areas. Make sure area has
plenty of free-moving, fresh, outside
air. Never run generator in an enclosed
or confined area. Never run generator
inside occupied building.
Early signs of carbon monoxide
poisoning resemble the flu, with
headaches, dizziness, or nausea. If you
have these signs, get fresh air at once!
Some people are more affected by
carbon monoxide than others. These
include pregnant women, persons with
heart or lung disease or anemia, those
under the influence of alcohol, and
those at high altitudes.
Gasoline presents
a hazard of fire or
explosion. Gasoline is flammable. Its
vapor is explosive.
• Keep fuel out of children’s reach.
• Refuel generator in a well-vented
area. Do not fill fuel tank in the dark.
Do not refuel while engine is
running. Unhook all electrical loads
and shut off engine before refueling.
• Do not overfill fuel tank. Always
allow room for fuel to expand. If you
overfill tank, fuel can overflow onto
hot generator or engine surface. This
can cause fire or explosion. After
refueling, tightly close fuel tank cap.
• Do not spill fuel. Fuel or fuel vapor
may ignite. If fuel spills, make sure
area is dry before starting engine.
• Never smoke in refueling area. Never
allow open flames or sparks in area.
• Store fuel in approved container.
Store fuel in a well-vented area free
of open flames or sparks.
Guard against fire
hazard. Keep
operation area well-vented. Keep
generator at least three feet away
from any object. Do not place flammable objects near generator.
• Do not use generator where flam-
mable vapors are present. Some
vapors are heavier than air. These
vapors settle in low-lying places.
• Do not use generator in enclosed
spaces. This includes motor home or
RV generator compartments.
Guard against
electric shock.
Generator produces high voltage. This
high voltage can cause severe electric
shock. Only responsible adults should
use the generator.
•Properly ground generator before
starting.
• Never let anyone operate or service
generator without proper instructions.
•Avoid contact with live terminals or
bare wires.
• Do not use generator outdoors in
rain or snow.
• Do not use generator near standing
water or snow.
• Do not use if generator is wet or damp.
• Do not use generator in highly
conductive areas. These areas include
metal decking and steelwork.
• Only use grounded extension cords.
• Do not use any worn or damaged
electric cords. Electric shock or
damage to generator may result.
• On construction sites, you must use a
Ground Fault Circuit Interrupter
(GFCI). This helps guard against
electric shock. OSHA and the National Electrical Code requires this in
the United States.
• Do not wear damp clothing or wet
shoes when using generator.
4
Dayton Operating Instructions and Parts Manual
Version B - For Reduction G016.J
Models 3WY47, 3W735B, 3W736C, 3WY44, 3TE27A,
3WY45, and 3WY46
General Safety Information
(Continued)
Engine exhaust
from this product
contains chemicals known, in certain
quantities, to cause cancer, birth
defects, or other reproductive harm.
Guard against
burns. Hot engine
parts can cause severe injury. Use
caution and remain alert when using
generator.
• Keep children and animals away
from generator while it is running or
hot.
• Keep all covers and shields in place.
Keep them tightly secured.
• The muffler becomes very hot during
operation. The muffler remains hot
for a while after shutdown. Do not
touch muffler while it is hot. Do not
let muffler touch anything flammable. Let engine cool before
transporting or storing.
Have standby
installation to
home or building performed by a
licensed electrician. Do not let anyone
else wire into a utility circuit. Personal
injury, equipment damage, or damage
to home could occur.
Never connect
generator to any
existing electrical circuits. The generator output will back-feed into the
utility power line. This may electrocute
a power company line repair person.
Also, if generator is powering electrical circuits, the chance of an electrical
fire exists.
Battery gives off
explosive gases.
Keep sparks, flames, and cigarettes
away. Do not remove or install battery
cables when engine is cranking or
running. Only service or use battery in
a well-vented area.
Battery contains
sulfuric acid.
Battery acid is poisonous if swallowed.
Contact with skin or eyes may cause
severe burns. Do not tilt generator
with battery installed. Tilting could
cause battery acid to spill. Wear
protective clothing and face shield
when servicing. Keep out of children’s
reach.
Only a qualified
electrical service
person should service and repair
generator.
• Generator produces high voltage.
Use extreme caution when working
on electrical parts.
• Always remove spark plug wire from
spark plug before servicing. This will
prevent accidental starting.
• When working on generator, avoid
hot muffler, exhaust manifold, and
engine parts. Severe burns may
occur.
• Do not work on generator when
tired.
• Use only factory approved repair
parts.
Store generator in
a well-vented area.
Make sure fuel tank is empty. Never
store with fuel in tank. Vapors may
reach an open flame or spark. Fire or
explosion may result.
Never operate
generator
• if engine speed changes greatly
• if engine misfires often
• if powered items overheat
• if electrical output drops
• if it is sparking
• if it produces smoke or flames
• if it vibrates at high levels
• if it has a damaged receptacle
Keep generator
and nearby areas
clean.
• Keep generator free of oil, mud, and
other foreign matter.
• Remove anything that creates
slippery areas around generator.
• Remove oily rags and other items
that create fire hazards.
• Keep a fire extinguisher nearby.
Make sure it is rated ABC by the
NFPA. They are good for all uses.
Consult your local fire department.
• Keep fire extinguisher well maintained. Be familiar with its use.
Know how to stop
engine quickly.
Know how to use all controls.
Prolonged exposure to loud noise
can cause hearing loss.
• When working around generator,
wear approved hearing protection.
• Remember neighbors when using
generator.
Generator Features
OIL ALERT SYSTEM
The oil alert system protects the engine
from low oil damage. This system automatically shuts down the engine and
prevents engine restarting if the oil level
falls too low.
NOTE: When this happens, the engine
switch remains in the ON position. The oil
alert system is wired into the ON/OFF
switch.
If this system shuts down the engine, the
engine will not start until you add oil. Add
oil to engine (see "Engine Oil", page 10).
NOTE: Operate generator on a level
surface. If not level, the oil may flow away
®
5
Dayton Operating Instructions and Parts Manual 3WY47, 3W735B, 3W736C, 3WY44, 3TE27A, 3WY45, and 3WY46
®
Dayton Professional-Duty
Electric Generators
Generator Features
(Continued)
from the oil level sensing device. This will
cause the oil alert system to shut down
engine.
See engine owner’s manual for more
information.
FULL POWER SELECTOR SWITCH
All models except 3W735B, 3WY47, and
3WY45 have a full power selector switch
on the control panel. The switch has two
positions: 120 VOLT ONLY, and 120/240
VOLT.
120 VOLT ONLY: This position sends full
power to the 120V receptacles only. 240V
power is not available. Use this position
when powering 120V items only.
Figure 5 – Full Power Selector Switch in 120
Volt Only Position
120/240 VOLT: This position sends full
power to the 120/240V receptacle. It also
powers the 120V receptacles at reduced
wattage capacity.
Figure 6 – Full Power Selector Switch in
120/240 Volt Position
IMPORTANT: Do not move the full power
selector switch while powering electrical
items. Unplug all items before moving
switch. Failure to do so can damage
switch.
Models 3W735B, 3WY45, and 3WY47 do
not have this switch. These models provide
full power to all receptacles.
HOUR METER
All models except 3W735B have an hour
meter. The hour meter is on the control
panel. The hour meter shows the total
generator run time, including all idle time
(See Figure 7). Hour meter is accurate up
to 1/10 of an hour.
Figure 7 – Hour Meter
AUTO-IDLE SYSTEM
The auto-idle system allows the engine to
idle down or run at a slower speed when
the generator is not being used to supply
power. The auto-idle system can be turned
ON or OFF by a rocker switch on the
control panel. When the switch is in the
OFF position, the engine runs at full speed
all of the time. When the switch is in the
ON position, the engine slows down to
idle speed until an electrical load is
applied. When a load is applied to the
generator (an electrical item is plugged in
and turned on) the engine speeds up to
the preset speed required to produce the
correct voltage.
IMPORTANT: A minimum current load of
1 Amp is required to disengage the auto
idle solenoid and cause the engine to
come up to speed for correct voltage.
Powering items at reduced engine speed
will damage generator and powered
items.
ELECTRIC START (MODELS 3WY46,
3WY45, AND 3WY47 ONLY)
Models 3WY46, 3WY45, and 3WY47 have
an electric starter. A battery is not supplied
with generator. You must provide a 12volt, 32-amp-hour battery. For more
battery information, see “Battery,” page 8.
GROUND FAULT CIRCUIT INTERRUPTER RECEPTACLE
All models have a 120-volt ground fault
circuit interrupter (GFCI) receptacle. The
GFCI receptacle is on the control panel or
top cover of alternator (Model 3W735B
only). The GFCI protects you against
hazardous electrical shock caused when
your body becomes a path through which
electricity travels to reach ground. This
could happen when you touch an appliance or cord that is ‘live’ through faulty
mechanism, damp or worn insulation, etc.
When protected by the GFCI, you may still
feel a shock, but the GFCI should cut it off
quickly. A person in normal health should
not receive serious injury.
NOTE: Infants and very small children may
still be affected.
TEST PROCEDURE
Check the GFCI receptacle every month.
This insures it is working right.
1. Push black TEST button. Red RESET
button should pop out. This should trip
GFCI, resulting in no electrical power at
receptacle. Verify this by plugging test
lamp with good bulb into receptacle. If
lamp does not work, GFCI receptacle is
good.
6
Dayton Operating Instructions and Parts Manual
Version B - For Reduction G016.J
F
F
U
E
L
Models 3WY47, 3W735B, 3W736C, 3WY44, 3TE27A,
3WY45, and 3WY46
Generator Features
(Continued)
If RESET button
do not use the GFCI receptacle. Contact
a qualified electrician for repairs.
2. If the GFCI receptacle tests okay, restore
power by pushing the RESET button
back in. The test lamp should work at
this time.
IMPORTANT: You must press the RESET
button firmly and fully. It should lock into
place. If the GFCI does not lock into place,
do not use receptacle. Contact a qualified
electrician for repairs.
Figure 8 - GFCI Receptacle
ENGINE CIRCUIT BREAKER (MODELS
3WY46 AND 3WY45 ONLY)
This circuit breaker protects the battery
charging circuit. A short circuit will trip the
circuit breaker. The circuit breaker will also
trip if you install battery wrong. Push
circuit breaker button to reset. Model
3WY47: Fuse located inside keyswitch box.
Engine Circuit
Breaker Button
does not pop out,
RESET
TEST
OFFONSTART
ENGINE SW
CIRCUIT
BREAKER
ON/push OFF
RECEPTACLE CIRCUIT BREAKER
Model 3W735B has only one receptacle
circuit breaker. All other models have four,
except Model 3WY47 which has six. The
circuit breakers protect the receptacles and
alternator. Overloading generator will trip
circuit breaker. A short circuit in item
being powered will also trip breaker. If this
occurs, unplug electrical load from
receptacle. Let circuit breaker cool down.
Push circuit breaker button to reset.
20
20
TrippedNormal
Figure 10 – Receptacle Circuit Breaker Button
Electric motors need higher starting
current. They require up to 3 to 6-times
their rated full-load wattage to start. The
starting current needed may be too high.
This can cause nuisance circuit breaker
tripping. To help prevent this, start electric
motors first. Connect additional items to
generator after starting motors. If this
continues to happen, reduce the total
generator load.
NOTE: High ambient temperatures will
cause nuisance tripping.
Assembly
HANDLE AND TOP COVER ASSEMBLY
(MODEL 3WY47 ONLY)
1. Remove the two bolts, lock nuts, and
washers holding side panels to control
panel end of roll cage. Insert bolts with
washers through two holes in the
handle and then back through roll cage
and side screen panels (See Figure 11 ).
Tighten the lock nuts against the side
screen panels.
Roll Cage
FUEL
F
Washers
Handle
Lock Nuts
Bolts
Figure 11 – Attaching Handles to Roll Cage
2. Place top cover on top of generator roll
cage with notch on control panel side.
Use four #8 sems screws provided to
attach cover to roll cage (See Figure 12).
SEMS Screws
Top Cover
SEMS
Screws
Figure 12 – Attaching Top Cover to Roll Cage
Figure 9 – Engine Circuit Breaker
®
7
Dayton Operating Instructions and Parts Manual 3WY47, 3W735B, 3W736C, 3WY44, 3TE27A, 3WY45, and 3WY46
®
Dayton Professional-Duty
Electric Generators
Assembly (Continued)
BATTERY (MODELS 3WY46, 3WY45,
AND 3WY47 ONLY)
Battery gives off
explosive gases.
Keep sparks, flames, and cigarettes
away. Do not remove or install battery
cables when engine is cranking or
running. Only service or use battery in
a well-vented area.
Battery contains
sulfuric acid.
Contact with skin or eyes may cause
severe burns. Do not tilt generator
with battery installed. Tilting could
cause battery acid to spill. Wear
protective clothing and face shield
when servicing. Keep out of children’s
reach.
• If battery acid gets on your skin,
wash with water.
• If battery acid gets in your eyes,
flush with water at least 15 minutes.
Call a doctor at once.
Battery acid is poisonous.
• If swallowed, drink large amounts of
water or milk. Follow with milk
of magnesia or vegetable oil. Call a
doctor at once.
If you remove
battery, insulate
the red, positive (+) battery cable
terminal. Insulate with electrical tape.
Exposed terminal may spark when
generator runs.
IMPORTANT: Make sure battery connec-
tions are the correct polarity. Electric start
generators use negative ground, 12-volt
DC starting system.
Models 3WY46, 3WY45, and 3WY47 have
an electric starter. A battery is not supplied
with generator. You must provide a 12volt, 32-amp-hour battery. The positive
and negative battery cables are supplied
with generator. You must
cables before mounting battery.
Always wear safety glasses when working
with battery. Make sure battery terminals
are clean. Make sure cable connections are
tight.
Always shut down engine before removing
or attaching battery cables. Always remove
the negative (–) cable first. Always attach
negative (–) cable last.
INSTALLING BATTERY CABLES TO
ENGINE
1. Attach the red, positive (+) battery cable to
the starter solenoid on engine (See Figure
13). The starter solenoid is located directly
above the starter on Model 3WY47. This
cable is factory installed.
Starter
Solenoid
Red, Positive (+)
Battery Cable
Figure 13 – Connecting Red, Positive (+)
Battery Cable to Starter Solenoid on Engine
(Model 3WY45 Shown)
install these
2. Attach the black, negative (–) battery
cable to the engine block. Use the bolt,
nut, and two washers provided with the
battery cables. Use long mounting hole
on opposite side of engine from starter
solenoid. Attach cable as shown in
Figure 14.
Black, Negative
(–) Battery
Cable
Figure 14 – Connecting Black, Negative (–)
Battery Cable to Engine Block
8
Dayton Operating Instructions and Parts Manual
Version B - For Reduction G016.J
Models 3WY47, 3W735B, 3W736C, 3WY44, 3TE27A,
3WY45, and 3WY46
Assembly (Continued)
MOUNTING BATTERY TO GENERATOR
Do not over tighten
positive terminal on
starter solenoid. Positive terminal
could rotate and cut into negative
terminal, causing a short.
NOTE: Model 3WY47 battery is located on
opposite side as shown (See Figure 16).
1. Secure battery to generator by battery
hold-down system. This system consists
of the battery mounting bracket, hook
bolt, and nut (See Figures 15 and 16).
Nut
Battery Mounting
Bracket
0
100
200
30
L
E
U
F
F
Figure 16 – Battery Hold-Down System
(Model 3WY47 Shown)
2. Locate the red, positive (+) battery cable
from starter solenoid. Connect it to the
positive (+) battery terminal (See Figures
17 and 18).
0
1
0
0
2
0
0
3
0
Nut
Battery Mounting
Bracket
Battery
Hook Bolt
To
Engine
Block
L
E
U
F
F
Figure 18 – Connecting Positive and
Negative Cables to Battery (Model 3WY47
Shown)
3. Locate the black, negative (–) battery
cable attached to engine block. Connect
it to the negative (–) battery terminal
(See Figure 16).
4. Check battery before starting engine.
Make sure fluid levels are full. Make
sure battery is charged.
See engine owner’s manual for more
information.
To Engine
Block
To Starter
Solenoid
Figure 15 – Battery Hold-Down System
(Model 3WY45 Shown)
Battery
Hook Bolt
To Starter
Solenoid
Figure 17 – Connecting Positive and
Negative Cables to Battery (Model 3WY45
Shown)
9
®
Dayton Operating Instructions and Parts Manual 3WY47, 3W735B, 3W736C, 3WY44, 3TE27A, 3WY45, and 3WY46
®
Dayton Professional-Duty
Electric Generators
Installation
FUEL
Gasoline presents a
hazard of fire or
explosion. Gasoline
is flammable. Its vapor is explosive.
• Keep fuel out of children’s reach.
• Refuel generator in a well-vented
area. Do not fill fuel tank in the dark.
Do not refuel while engine is
running. Unhook all electrical loads
and shut off engine before refueling.
• Do not overfill fuel tank. Always
allow room for fuel to expand. If you
overfill tank, fuel can overflow onto
hot engine. This can cause fire or
explosion. After refueling, tightly
close fuel tank cap.
• Do not spill fuel. Fuel or fuel vapor
may ignite. If fuel spills, make sure
area is dry before starting engine.
• Never smoke in refueling area. Never
allow open flames or sparks in area.
• Store fuel in approved container.
Store fuel in a well-vented area free
of open flames or sparks.
Use clean, fresh, unleaded gasoline. Use
gasoline with octane rating of 86 or
higher. Service station gasoline pumps
should display the octane rating. Using
gasoline with lower octane level could
damage engine. Avoid getting dirt, dust,
or water in fuel tank. Do not mix oil with
gasoline. See engine owner’s manual for
more information.
ENGINE OIL
We ship the generator without oil in the
engine crankcase. You must add oil before
starting engine. See engine owner’s
manual for specific oil type.
CHECKING OIL LEVEL AND ADDING OIL
Follow steps below to check oil level.
Make sure engine is level and stopped.
1. Remove dipstick (See Figure 19). Wipe
dipstick clean.
2. Insert dipstick into oil filler neck. Do not
screw it in. Oil level should be at top of
filler neck. Oil should cover most of
dipstick. For Model 3WY47 only, oil level
should be between two dots on dipstick.
3. If level is low, fill to top of oil filler neck
(See Figure 19). Only use oil recommended
in engine owner’s manual. For Model
3WY47 only, fill to top dot on dipstick.
Oil Level
At Top
Of Filler
Neck
Dipstick
Oil
Figure 19 – Checking Oil Level (Model
3W735B Shown)
NOTE: If oil level is too low, oil alert
system will shutdown engine and prevent
engine from restarting.
VENTILATION
Use only in well-
vented areas. Make
sure area has plenty of free-moving,
fresh, outside air. Never run generator
in an enclosed or confined area. Never
run generator inside occupied building.
Engine exhaust contains poisonous
carbon monoxide gas. Overexposure
will cause loss of consciousness and
will lead to death.
This generator needs cooling air to run
properly. Never block free-flowing, cooling
air to generator. Overheating will occur
without cooling air. This will damage the
generator. Keep generator at least three
feet away from any object.
GENERATOR GROUNDING
You must properly
earth-ground
generator before starting. This will
help guard against deadly electric
shock. Only use grounded plugs with
generator. Only use grounded extension cords. Only use three-wire or
double-insulated power tools.
Grounding generator helps prevent electric
shock from a ground fault condition.
Locate ground lug on end of generator
housing (See Figure 20). Attach a #10
stranded-copper ground wire to ground
lug. Drive grounding point into ground.
Grounding point can be a stake, grounding rod, or pipe. Grounding point should
be copper or brass. Attach ground wire to
grounding point. You must supply the
ground wire and grounding point. These
do not come with generator. Follow the
National Electrical Code and all state and
local codes. Consult your power company
or a licensed electrician.
For a grounding
point, do not use
metal pipe being used to carry combustible materials or gases.
Alternator
Figure 20 – Grounding Generator
(Model 3WY45 Shown)
Ground Wire
Ground
Lug
Copper or
Brass
Grounding
Point
10
Dayton Operating Instructions and Parts Manual
Version B - For Reduction G016.J
Models 3WY47, 3W735B, 3W736C, 3WY44, 3TE27A,
3WY45, and 3WY46
Installation (Continued)
DUST, DIRT, RAIN, AND SNOW
Do not use
generator outdoors in rain or snow. Do not use
generator near standing water or
snow. Do not use if generator is wet or
damp. Operating generator in these
conditions increases the risk of electrocution. Severe injury or death can
occur.
Do not use generator in extremely dusty or
dirty conditions. This will severely affect its
life. Keep generator clean. Do not allow
dust, dirt, rain, or snow to collect on it.
Protect generator from outdoor elements.
EXTENSION CORDS
Only use grounded extension cords. Be
sure to use extension cord with proper
wire gauge size. See chart below.
RECOMMENDED MINIMUM WIRE
GAUGES (AWG) FOR EXTENSION
CORDS
Ampere AWG for AWG for AWG for
Load 50' Cord 100' Cord 150' Cord
218 18 18
318 18 18
416 16 16
516 16 16
616 16 14
816 14 12
10 16 14 12
12 14 14 12
14 14 12 10
16 12 12 10
20 10 10 8
GROUND FAULT PROTECTION
Ground Fault Circuit Interrupter (GFCI)
helps guard against electric shock. On
construction sites, you must use a GFCI.
United States OSHA and the National
Electric Code requires this.
You may need to provide the GFCI device.
Purchase GFCI at any electrical supply
house. Check the Yellow Pages for the
nearest supply house.
STANDBY INSTALLATION TO HOME
OR BUILDING
Have standby
installation
performed by a skilled, licensed
electrician. Do not let anyone else wire
into a utility circuit. Personal injury,
equipment damage, or damage to
home could occur.
IMPORTANT: This generator will not
power your entire home. Most home
utility electric service is more than 60
amps. This will exceed generator output.
Only power needed items during a power
outage. Make sure total wattage of
electrical load does not exceed rated
wattage of generator.
You can use this generator as a standby
power source. During a power outage, the
generator will power selected items in a
building. Have generator and additional
wiring installed by a skilled, licensed
electrician. This is not a do-it-yourself job.
Follow all local codes.
The electrician must
install a doublethrow transfer switch. This isolates
existing electrical circuits from the
utility power line. If not isolated,
generator output will back-feed into
utility power line. This may electrocute
a power company line repair person.
DETERMINING ELECTRICAL LOAD
FOR GENERATOR
You must decide what electrical load your
generator can power. Do this before using
generator. Use the following four-step
method. It will help you select a load that
is not too large. Make sure total wattage
of all electrical loads does not exceed
rated wattage of generator. For rated
wattage of your generator, see “Electrical
Specifications,” page 2. Electric motors
present a special problem when figuring
load. Read Step 3 carefully.
1. Make two lists of items you want
powered by generator. List all motors
and motor powered appliances in one.
List all lights, small appliances, etc. in
the other. For standby service to home
or building, only include items you must
power.
2. Enter running watts of each item except
motors. The light bulb or appliance
nameplate lists its wattage. Remember,
1KW = 1000 watts.
NOTE: The nameplate may not list
wattage. It may only list volts and amps.
The formula for finding wattage is: Volts x
Amps = Watts. For example: An appliance
nameplate states 3 amps at 120 volts. 3
amps x 120 volts = 360 watts.
3. Electric motors present a special
problem. They require 3 to 6 times their
rated full load wattage to start. Chart 1,
on page 12, shows starting watts
(maximum volt-amperes [VA]) for
different size motors. For example: an
electric motor nameplate states 5 amps
at 120 volts. 5 amps x 120 volts = 600
watts running. Multiply this figure by 3.
This will show the starting watts
(maximum VA) needed. 600 watts x 3 =
1800 watts (VA) to start. When figuring
the generator load for motors, you must
use the starting watts (maximum VA)
figure. Do not use the running watts
figure.
®
11
Dayton Operating Instructions and Parts Manual 3WY47, 3W735B, 3W736C, 3WY44, 3TE27A, 3WY45, and 3WY46
®
Dayton Professional-Duty
Electric Generators
Installation (Continued)
NOTE: Some motors require nearly the
same wattage to run as to start. These
items include saws, drills, hair dryers, and
food mixers. See Chart 2 for typical
appliance wattage examples.
4. Add watts and starting watts (maximum
VA) of all items. This total must not be
larger than the rated wattage of your
generator. It is a good idea to have up
to 25% extra capacity for future needs
or extra equipment.
TYPICAL ELECTRIC APPLIANCE WATTAGES
Chart to be used as reference. Data may vary with size, make, and/or model.
CHART 2
Starting
Running Watts
Equipment Watts (Max.VA)
Light bulb (100W) 100 100
Radio 150 150
Fan 200 600
Television 400 400
Furnace fan—1/3 HP with blower 600 1800-2400
Vacuum cleaner 600 750
Sump pump—1/3 HP 700 2100-2800
Refrigerator/freezer 800 5000
6" Circular saw 800 1000
Floodlight 1000 1000
1/2" Drill 1000 1250
Toaster/coffeemaker 1200 1200
Skillet 1200 1200
14" Chain saw 1200 1500
Water well pump—1/2 HP 1000 3000-6000
Hot plate/range (per burner) 1500 1500
10" Table saw 2000 6000
Water heater (storage-type) 5000 5000
CHART 1
Approximate Approximate Approximate Approximate
Motor Approximate (Max. VA) (Max. VA) (Max. VA) (Max. VA)
HP Running Universal Motors Repulsion Capacitor Split Phase
Rating Watts (small appliance) Induction Motors Motors Motors
1/8 275 400 600 850 1200
1/4 400 500 850 1050 1700
1/3 450 600 975 1350 1950
1/2 600 750 1300 1800 2600
3/4 850 1000 1900 2600 †
1 1000 1250 2300 3000 †
1
1
/2 1600 1750 3200 4200 †
2 2000 2350 3900 5100 †
3 3000 † 5200 6800 †
(*) Always use starting watts (maximum VA), not running watts, when figuring correct electrical load.
(†) Motors of higher horsepower are not generally used.
Please check with appliance manufacturer for maximum wattage required.
Starting Watts* Starting Watts* Starting Watts* Starting Watts*
12
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