UST WDF1200C-EF50 User manual

Users Manual
WDF1200C Series Gasoline Generators
WDF12OOC-EF50
WDF12OO('-AF50
WDF12 00C- UF60
Warranty Information
Do Not Return To Store
One year Limited Manufacturer's Warranty.
Products are not to be returned to retailer
Service is available from a network of providers nationwide
To identify a provider in your area or for warranty information call toll free
866 797 2738
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 the user' manual could result in personal
injure and/or property damage! Retain the user's manual for future reference. Call toll free number 866 797
2 738for parts"and service.

CONTENTS
1 SAFETY INFORMATION ............................................. 2
11 CONTROL PANEL FUNCTIONS ................................. 3
Ill PRE-OPERATION PROCEDURES °°°°°°°°°°'°°'°°'°°'°°'°°'°°°°°°°3
I\' OPERATION °°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°° °°°°°°°°°4
V MAINTENANCE .................................... 6
VI. STORAGE °°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°° °°°°°°8
VII. SPECIFICATIONS °°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°° °°°°°° 9
VIII. GENERATOR PARTS DIAGRAM AND PARTS LIST ............... i0
IX ACCESSORIES ................................. 13
Read carefully before attempting to assemble, install, operate or maintain the product described. Protect
yourself and others by observing all safe O. information. Failure to comply with the user' manual could result
in personal injure and/or property damage! Retain the user's" manual for fitture reference. Call toll free
number 866 797 2 738for parts and service.

WARNING
PLEASE READ AND UNDERSTAND THIS MANUAL COMPLETELY BEFORE OPERATING THE
MA TCttlNE.
I. SAFETY INFORMATION
EXHAUST FUMES ARE POISONOUS
• Never operate the engine in a closed area or it may cause unconsciousness and death within a short time.
Operate the engine in a well-ventilated area.
FUEL IS HIGHLY FLAMMABLE AND POISONOUS
• Always turn off the engine when refueling.
• Never refuel while smoking or in the vicinity of an open flame.
• If you swallow any fuel, inhale fuel vapor, or allow any to get in your eyes, see your doctor ilmnediately. If
any fuel spills on your skin or clothing, ilmnediately wash with soap and water and change your clothes.
• When operating or transporting the machine, be sure it is kept upright. If it tilts, fuel may leak froln the
carburetor or fuel tank.
ENGINE AND MUFFLER MAY BE HOT
•Place the machine in a place where pedestrians or children are not likely to touch the machine.
• Avoid placing any flammable materials near the exhaust outlet during operation.
• The machine lnUSt be kept at least three feet from buildings and other equipment to allow proper air
circulation.
ELECTRIC SHOCK PREVENTION
• Never operate the engine in rain or snow.
• Never touch the machine with wet hands or electrical shock will occur.
• Be sure to ground (earth) the generator with a proper ground wire.
Ground (earth) Lead
Diameter:0. 121ran (0.005in)/ampere
EX: 10Ampere x 1.2(0.055in)
CONNECTION NOTES
• Avoid connecting the generator to commercial power outlet.
• Avoid connecting the generator in parallel with any other generator.
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 the user' manual could result
in personal injure and/or property damage! Retain the user's" manual for fitture reference. Call toll free
number 866 797 2 738 for parts and service.

II. GENERATOR CONTROL FUNCTIONS
ENGINE SWITCH
The engine switch controls the ignition system.
@ "ON"
Ignition circuit is switched on.
The engine can be started.
"OFF"
Ignition circuit is switched off.
The engine will not run.
AC BREAKER (N.F.B)
The AC breaker turns off"automatically when the load exceeds the generator rated output.
CAUTION:
Reduce the load to within specified generator rated output if the AC breaker (N.F.B) turns off.
DC BREAKER (N.F.B)
The DC breaker turns off automatically when the load exceeds the generator rated output.
III. PRE-OPERATION CHECK
NOTE:
Pre-operation checks should be made each time when the generator is used.
! WARNING
The engine and muffler will be very hot after the engine has been run. Avoid touching the engine and muffler while
they are still hot with any part of your body or clothing during inspection or repair.
FUEL
Make sure there is sufficient fuel in the tank.
Recommended fllel: Unleaded gasoline
Fuel tank capacity: 5L
Read carefully before attempting to assemble, install, operate or maintain the product described. Protect
yourself and others by observing all safe O_information. Failure to comply with the user' manual could result
in personal injure and/or proper O' damage! Retain the user's" manual for furore reference. Call toll free
number 866 797 2 738for parts and service.

WARNING
• Fuel is highly flalmnable. Check " SAFETY INFORMATION" carefully before refueling.
• Do not fill above the top of the fuel fill or it may overflow when the fuel heats up later and expands. Add fuel
until level is approximately 1 inch from top of fuel fill.
• After refueling, make sure the tank cap is tightened securely.
ENGINE OIL
Make sure the engine oil is filled to point of overflowing at oil fill cap. Do not overfill. Add oil as necessary.
Recommended oil:
A SAE #30 or 10W-30
Or 10W-40
B SAE #20 or 10W-30
Or 10W-40
C SAE 10Wor 10W-30
Or 10W-40
Above 35" C(95" F):SAE #40
Oil capacity: 0.37L
GROUNDING
Make sure to ground the generator.
USING THE GENERATOR TO CHARGE A BATTERY
WARNING:
Battery electrolyte is poisonous and dangerous, causing severe burns, etc. It contains sulfltric acid. Avoid contacting
with skin, eyes or clothing.
Battery produces explosive gases. Keep sparks, flame, cigarettes, etc. away. Ventilate when charging or using in
closed space. Always cover eyes when working near batteries. Keep out of reach of children.
IV. OPERATION
CAUTION:
The generator has been shipped without engine oil. Fill oil when starting.
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 the user' manual could result
in personal injure and/or property damage! Retain the user's" manual for filmre reference. Call toll free
number 866 797 2 738 for parts and service.

STARTING THE ENGINE
• Before starting the engine, do not connect the electric apparatus.
• Turn the AC switch (N.F.B) to " OFF
I Turn the fuel cock lever to "ON".
II Turn the engine switch to "ON".
Turn the choke lever to the " I "_ I " position. The choke is not required to start a warm engine.
m m
Ill
IV Pull slowly on the recoil starter until it is engaged, then pull it briskly. Take your hand off the recoil starter
ilmnediately after the engine starts.
V Warm up the engine. Move choke lever toward the operating position a short distance at a time over several
seconds in warm weather or lninutes in cold weather. Let engine run Slnoothly before each change.
V[ Turn the choke lever back to the operating position.
CONNECTION
AC OUTPUT
CAUTION:
• Be sure the electric apparatus is turned off before plugging in.
• Be sure the total load is within generator rated output.
• Be sure the socket load current is within socket rated current.
I Wind the power lead 2 or 3 turns around frame.
II Start the engine.
[[1 Plug imoAC socket.
IV Make sure the pilot light is on or voltage meter indicates the rated voltage.
V Turn on the electric apparatus.
• Reduce the load to within specified generator rated output if the AC switch (N.F.B.) turn oft'.
DC OUTPUT
Battery charging (if equipped).
Red lead to positive (+), black to negative (-).
CAUTION:
This battery charging system is intended to recharge weak batteries, not to "BOOST START" vehicles. Before
charging a storage battery, please read the battery in the user's manual.
STOPPING THE ENGINE.
• Turn off the electric apparatus.
I Disconnect the electric apparatus.
II Turn the engine switch to "OFF".
[[1 Turn the fuel cock lever to "OFF".
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 the user' manual could result
in personal injure and/or property damage! Retain the user's" manual for furore reference. Call toll free
number 866 797 2 738for parts and service.

V. PERIODIC MAINTENANCE
Item Remarks
Pre-
Operation
check
(daily)
Initial
1
month
Or 20 Hr
Every
3 months
Or 50 Hr
Every 6
Months
or
i00 Hr
Every
12
lnonths
Or 300
Hr
Spark Plug Check condition adjust
Gap and clean. Replace
If necessary.
Engine Oil Check oil level
Replace
Air Filter Clean. Replace if
Necessary.
Fuel Filter Clean fuel filter. Re-
Place if necessary.
Valve Check and adjust when
Clearance necessary.
Fuel Line Check fuel hose t\_r
Crack or damage Re-
Place if necessary.
Exhaust Check for leakage
System Retighten or replace
gasket if necessary
Check muffler screen.
Carburetor Check choke operation.
Cooling Check t:an damage.
System
Starting Check recoil
System Starter operation.
Decarburization Clean more frequently if
Necessary,
Fittings Check all fittings
/Fasteners And t:asteners correct if
necessary.
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 the user' manual could result
in personal injure and/or property damage! Retain the user's" manual for fitmre reference. Call toll free
number 866 797 2 738for parts and service.

ENGINE OIL REPLACEMENT
IPlace the machine on a level surface and warm up the engine for several minutes. Then stop the engine.
II Remove the oil filler cap.
[[1 Place an oil pan under the engine. Remove the oil drain plug so that the oil can be completely drained.
IV Check the oil drain plug, gasket, oil filler cap and "o"-ring. If damaged replace.
V Reinstall the oil drain plug.
V[ Add engine oil to the upper level.
Recommended oil:
ASAE#30 OR 10W-30 OR 10W-40
B SAE #20 OR 10W-30 OR 10W-40
C SAE 10WOR 10W-30 OR 10W-40
Above 35" C (95F) : SAE #40
NOTE:
Recommended engine oil classification:
API Service " SE " or "SF "; if not available, "SD".
• Be sure no foreign material enters the crankcase.
AIR FILTER MAINTENANCE
• Clean regularly washing in a cleaning solvent.
• Do not wring out the element. This could cause it to tear.
• When replacing the filter, be sure the filter's sealing surface matches the air filter housing so there is no air
Leak.
• The engine should never run without the air filter properly installed. Excessive piston
And or cylinder wear may result in operating without the air filter properly installed.
WARNING
Never refilel while smoke or in the vicinity of an open flame.
SPARK PLUG INSPECTION
Standard electrode color: Tan Color
Spark Plug Gap:0.
7-0.8mm(0.028-0.03 lin)
FUEL TANK FILTER
@ Clean with soh, ent.
(2) Wipe off.
Read carefully before attempting to assemble, install, operate or maintain the product described. Protect
yourself and others b)' observing all safety information. Failure to comply with the user' manual could result
in personal injure and/or property damage! Retain the user's" manual for fitmre reference. Call toll free
number 866 797 2 738for parts and service.

WARNING
Be sure the gas tank cap is tightened securely.
TROUBLESHOOTING
ENGINE WON' T START
1. Fuel systems
No fuel supplied to combustion chalnber.
• No fuel in tank...Supply fuel.
• Clogged fuel line" "Clean fuel line.
• Foreign matter in fuel cock" "Clean fuel cock.
• Clogged carburetor'"Clean carburetor.
2. Electrical systems
Poor spark
• Spark plug dirty with carbon or wet'"Remove carbon or wipe spark plug insufficient.
• Faulty ignition system'"Consult dealer.
3.Compression insufficient
• Worn out piston and cylinder" "Consult dealer.
• Loose cylinder head nuts'"Tighten nuts properly.
• Damaged gasket'"Replace gasket.
V[. STORAGE
Long-term storage of your machine will require some preventive procedures to guard against deterioration.
DRAIN THE FUEL
Drain the fuel tank, fuel cock, and carburetor float bowl.
ENGINE
I Pour in about one tablespoon of SAE 10W30 or 20W40 motor oil through the spark plug hole.
II Use the recoil starter to turn the engine over several times (with ignition of*).
111Pull the recoil starter until you feel compression.
IV Stop pulling.
V Clean exterior of the generator and apply a rust inhibitor.
V[ Store the generator in a dry, well-ventilated place, with the cover place over it.
\/1[ The generator lnUSt remain in a horizontal position.
Read carefully before attempting to assemble, install, operate or maintain the prodact described. Protect
yourself and others by observing all safety information. Failare to comply with the user' manual could result
in personal injure and/or property damage! Retain the user's" manual for filmre reference. Call toll free
number 866 797 2 738for parts and service.

VII. SPECIFICATIONS
DIMENSIONS WDF1200C-EF50 WDF1200C-AF50 WDF1200C-UF60
Overall Length (iron) 460
Overall Wide (iron) 365
Overall Height (iron) 390
Dry Weight (kg) 28
GENERATOR:
Model WDF1200C-EF50 WDF 1200C-AF50 WDF1200C-UF60
Type Single phase, brushless
Peak power (KW) 1.0 1.0 1.2
Rate output (KW) 0.85 0.85 1.05
Rated speed (l_ln) 3000 3000 3600
AC Rated voltage 230 240 1t5
AC Rated current 3.7 3.5 9.1
(aMP)
Rated frequency 50 50 60
(Hz)
Power factor COS 4_ 1.0
DC Rated voltage 12
DC Rated AMP 8 8 8
ENGINE:
ENGINE LY152FD-A
Single cylinder, 4-stroke,
Type Forced air cooling
Bore X Stroke (iron) 52 X 38
Displacement (CC) 81
Compression Ratio 7.7:1
Max. Outpm (KW/rpm) 1.70/4000
Lubricate Mixed oil brume lubrication
Fuel No 90# gasoline
Oil No Purpose oil for 4-stroke
Starting Manual starting
Output Mode Horizontal cone-shaped shaft outpm
Ignition T.C .I
• Specifications subject to change withom prior notice.
Read carefully before attempting to assemble, install, operate or maintain the product described. Protect
yourself and others by observing all safety inJbrmation. Failure to comply with the user' manual could result
in personal injure and/or property damage! Retain the user's" manual for future reference. Call toll free
number 866 797 2 738 for parts and service.

VIII. GENERATOR SCHEMATIC DIAGRAM
_otDr
_Lo,Z Rt _ Over Volt Protective
R2 J Resistance
D1 _ Spin Rectifier
D2
FC 1_ Rotor Pole Winding
FC2 j
S¢
PC
St_tor
I
_-_ I C _
I--r-
I
ILlfl
I
Me I
I
I D3
I
I
DC -- Stator DC Winding
C ---C-'aFacitor
MC--
D3
SC
Stator Main Winding
Single-phase Rectifier
-- Stator Auxiliary Winding
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 the user' manual could result
in personal injure and/or proper O' damage! Retain the user's" manual for furore reference. Call toll free
number 866 797 2 738for parts and service.
10

PARTS ILLUSTRATION AND PARTS LIST
15
17
19
54
h
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 the user' manual could result
in personal injure and/or property damage! Retain the user's" manual for future reference. Call toll free
number 866 797 2 738 for parts and service.
]i

PARTS LIST
NO. DESCRIPTION
3 FUEL TANK CAP
4 FUEL TANK FILTER
5 HEXAGON FLANGE BELT M6x25
6 GASKET 6
7 SCREW GASKET
8 ANTI-VIRBRATION GASKET
9 FUEL TANK
10 FUEL SWITCH
11 FUEL PIPE HOOP
12 OIL PIPE
13 BOLT
14 AIR FILTER CAP
15 FOAM FILTER
16 AIL FILTER CLAPBOARD
17 FLANGE LOCKED NUT M6
18 AIR FILTER BASE
19 SUCTION PIPE SEALED
20 CARBURETOR
21 SUCTION PIPE
22 DOUBLE END BELT
23 ENGINE
24 EXHAUST PIPE GASKET
25 EXHAUST PIPE
26 FLANGE LOCKED NUT M8
27 HEXAGON FLANGE BELT M6 x 12
28 MUFFLER GASKET
29 MUFFLER
30 HEXAGON FLANGE BELT M6x12
31 FRONT COVER
32 FASTEN GASKET
33 HEXAGON FLANGE BELT M8x20
34 ROTORASSY
35 STATOR ASSY
36 MAGNETO WIRE PROTECT COVER
37 REAR COVER
38 RECTIFIER
39 GASKET 6
40 SPRING GASKET 6
41 FLANGE BOLT
QUANTITY
1
1
4
4
4
4
1
1
2
1
2
1
1
1
6
1
1
1
1
2
1
1
1
2
2
1
1
1
1
4
4
1
1
1
1
1
4
4
4
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 the user' manual could result
in personal injure and/or proper O' damage! Retain the user's" manual for future reference. Call toll free
number 866 797 2 738for parts and service.
12

PARTS LIST
NO DESCRIPTION
42 GASKET 8
43 SPRING GASKET 8
44 HEXAGONFLANGEBELT M8× 170
45 MAGNETO COVER
46 GASKET 5
47 SPRING GASKET 5
48 BOLTMSX8
49 FLANGE LOCKED NUT M8
50 GASKET 8
51 SPRING GASKET 8
52 HEXAGON FLANGE BELT MSx40
53 CUSHION
54 FRAME
55 ANTI-VIRBRATION FEET
56 FLEX TUBE
58 ELECTRIC APPLIANCE BOX
59 HEXAGON FLANGE BELT M4xl0
60 CAPACITOR
61 BOLT M4x16
62 PANEL
63 BOLTM6x25
QUANTITY
1
1
1
1
2
2
2
6
8
8
8
2
1
4
1
1
2
1
1
1
4
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 the user' manual could result
in personal injure and/or property damage! Retain the user's" manual for fitture reference. Call toll free
number 866 797 2 738for parts and service.
13

5
62
w
15 16 17
19
12
25262_
I
%
_9F120_7(_%17)RSETPA_]IALPI(Z_
k
Read carefully before attempting to assemble, install, operate or maintain the product described. Protect 14
yourself and others by observing all safety information. Failure to comply with the user' manual could result
in personal injure and/or property damage! Retain the user's" manual for future reference. Call toll free
number 866 797 2 738 for parts and service.

IX. ACCESSORIES
@ User's manual
(2) Spark plug sleeve
@ DC lead
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 the user' manual could result
in personal injure and/or property damage! Retain the user's" manual for future reference. Call toll free
number 866 797 2 738for parts and service.
15