NORTHMARK YDE2800X/E User manual

USER MANUAL
PORTABLE DIESEL GENERATOR SET
Please read the manual carefully
before using the engine.
This guide contains important
guidance for safe operation.

1
PREFACE
Thank you for purchasing NORTHMARK diesel generators.
This operation manual will tell you how to install, use and maintain generator set correctly.
Please read this manual before using the generating set to ensure the proper operation.
Follow the instructions to keep your generating set in the best working condition and extend the life of it.
lf you have any commends or problem, please contact with us or the authorized agent.
This manual deals with the general items of the NORTHMARK diesel generating set. However, the
manual may vary with the development of the products in the future.
Please give special attentions to warnings and cautions.
WARNING
Failure to properly follow these precautions can result in property damage, serious injury or DEATH!
Read all labels and the owner's manual before operating this generator.
Operate only in well ventilated areas. Exhaust gas contains poisonous carbon monoxide, and can be
deadly. Always stop engine before refueling. Wait 5 minutes before restarting.
Check for spilled fuel or leaks. Clean and/or repair before use.
Keep any source of ignition away from fuel tank, at all times.
WARNING
lndicates that the severe personal injury even death will result if the instructions are not followed.
CAUTION
lndicates that the severe personal injury or equipment damage will result if the instructions are not
followed.
NORTHMARK diesel generating set will meet your requirement if you operate it according to the manual
instruction. Otherwise serious personal injury and equipment damage may result.
So, NORTHMARK reconfirms that you must to read and understand this manual before operating the
generating set.
ATTENTION
1. Don't connect the generator to other power supplies. Such as main-supply of power company. ln some
special cases, please connect the stand-by power to the electrical system by professional electrician
who must know the difference between public supply and generator circuit.
2. Laymen especially the children cannot realize the danger, they should keep away from the generator.
3. Please wear suitable clothes and safety protective coverall.
4. The key of door lock and electric door accessories for meter door and maintenance door of silent unit
should be well kept by operators. Please lock all the doors of generator tightly to prevent laymen to
operate (the children cannot realize the danger).

2
WARNING
1. TO PREVENT THE FIRE
Never add fuel to the fuel tank while the engine is running.
Wipe off the overflowed fuel oil with a clean cloth. Keep explosives and other flammable products away
from the generating set.
■To prevent the fire and to provide adequate ventilation, keep the generating set at least one meter
away from buildings and other equipment during operation.
■Operate the generating set on a level surface.
■Do not put the generating set indoors while the engine is hot.
■Set up extinguisher and first-aid kit in working field.
2. TO PREVENT FROM INHALING THE EXHAUST
Exhaust gas contains poisonous carbon monoxide, which is harmful to the health. Never use the
generating set at the confined places or poor ventilated locations. If it's necessary to run the generating
set indoors, be sure to provide the adequate ventilation.
3. BE CARE NOT TO BE SCALDED
The muffler and the engine body are very hot while the engine is running or just after running, do not
touch these parts to prevent from being scalded.
■Please note the warning labels on the generator.
4. ELECTRIC SHOCKS, SHORT DIRCUITS
To avoid electric shocks or short circuits, do not touch the generating set when your hands are wet. This
generating set is not waterproof, so it should not be used in a place exposed to rain snow or water
sprays. Use of the generating set in a wet place can cause short circuits and electric shocks during
operation.
■The generating set should be grounded to prevent electrical shocks from faulty appliances. Connect
a length of heavy wires between the generating sets ground terminal and an external ground source.
■Do not hook up tools or other apparatus to generating set rotator before it has been started. lf
equipment is attached, generator starting may cause sudden movements of the equipment and result in
injuries and accidents. Be Sure to disconnect any apparatus from the generating set or prior to starting.

3
CAUTION
■Most appliance motors require more than their rated wattage for start-up.
■Do not exceed the specified current limit of any socket.
■Do not connect the generating set to a household circuit. This could cause damage to the generating
set and to electrical appliances in the house.
5. BATTERY USAGE
The battery of open frame generator set is optional, users should choose and buy suitable battery before
operation.
The battery of silent generator set adopts advanced technique without maintenance, users need not fill
water and add electrolyte.
Observe the status displays of battery:
Blue: the battery is in good condition
White: the electricity is not enough, need to charge.
Red: the electrolyte is not enough, need to change.
Battery usage:
Shut down the power after removing the battery negative wire when checking and maintaining generator.
Connect battery anode then cathode.
Stop charge quickly after the battery is fully charged.
When the battery is too hot in charging, recharge after stopping for a while.
6.The installation and maintenance of generator should be operated professional maintainer.
7. Restrict application of generator in high-hazard risk to causing fire area.
8. Don't pour waste oil into the sewer or the river to prevent environment pollution. The exhaust oil from
generator must be stored in container. To deal with bad matter, such as fuel, oil cooling water, solvent,
filter and battery, according to the law.
9.The exhaust gas and fuel of generator are poisonous. Please operate carefully.

4
CONTENTS
1. Main Technical Specifications and Data...................................................................................5
2. Configuration ..................................................................................9
3. Preparation for Starting ..................................................................................11
4. Start the Generating Set ..................................................................................15
5. Operate the Generating Set ..................................................................................19
6. Load ..................................................................................20
7. Stop the Generating Set ..................................................................................23
8. Periodic Checks and Service ..................................................................................24
9. Long-term Storage ..................................................................................27
10. Troubleshooting and Remedy ...................................................................................28
11.Appendix ...................................................................................29

5
1. MAIN TECHNICAL SPECIFICATIONS AND DATA
1-1
Model
Item
YDE2800X/E
YDE3800X/E
YDE3800T
Rated frequency HZ
50
60
50
60
Rated power kVA
2.5
2.8
3
3.3
Rated voltage(V )
115/230
240/120
115/230
240/120
Rated current (A)
21.7/10.8
11.7/23.3
26.08/13.04
13.75/27.5
Phase No.
Single phase
Single phase
Power factor (cosΦ)
1
1
Rated revolution speed
(r/min)
3000
3600
3000
3600
Excitation mode
Controlled silicon self excitation constant voltage
DC output
12V 8.3A
Coupling method
Transmission rigid connection
Model
YD173FA
YD178FA
Engine
Type
4-stroke, single-cylinder, air-cooled, direct injection diesel engine
Displacement (ml)
211
296
Bore x stroke (mm)
73x55
78x62
Lube oil capacity (L)
0.75
1.1
Rated power kW
3.5/3000rpm, 4/3600rpm
4.2/3000rpm, 4.7/3600rpm
Fuel type
Diesel 0# (summer) -10# (winter) -35# (chilling)
Lube oil brand
L-ECD grade 15W30 15W40
Generating Set
Low oil alarm system
With
Fuel tank capacity (L)
12
Open:12, silent: 14.5
Overall dimensions
(LxWxH)(mm)
655x475x605
YDE3800X/E: 690X490X650
YDE3800T: 950x550x743
Net weight kg
51
X/E:74, T:132
Structure mode
X/E Open frame type T Silent type

6
1-2
Model
Item
YDE6500X/E
YDE6500T/YDE6700T/YDE7000TD
YDE6500X3/E3
YDE6500T3/YDE6700T3
YDE7000TD3
Rated frequency HZ
50
60
50
60
Rated power kVA
4.5
5
5.5
6.3
Rated voltage(V )
115/230
240/120
400/230
416/240
Rated current (A)
39.2/19.6
20.8/41.7
7.9
8.7
Phase No.
Single phase
Three phase
Power factor (cosΦ)
1
0.8 (Lag)
Rated revolution speed
(r/min)
3000
3600
3000
3600
Excitation mode
Controlled silicon self excitation constant voltage
DC output
12V 8.3A
Coupling method
Transmission rigid connection
Model
YD186FAG
Engine
Type
4-stroke, single-cylinder, air-cooled, direct injection diesel engine
Displacement (L)
0.418
Bore x stroke (mm)
86*72
Lube oil capacity (L)
1.65
Rated power kW
3000 r/min: 5.7 3600 r/min: 6.3
Fuel type
Diesel 0# (summer) -10# (winter) -35# (chilling)
Lube oil brand
L-ECD grade 15W30 15W40
Generating Set
Low oil alarm system
With
Fuel tank capacity(L)
E/E3:12 T/T3:14.5
Overall dimensions
(LxWxH)(mm)
YDE6500X/E: 750x510x710
YDE6700T/YDE7000TD:950x550x743
YDE6500X3/E3:
750x510x710
YDE6500T3: 910x532x740
YDE6700T3/YDE7000TD3:
950x550x743
Net weight kg
X/E:91, T:155
Structure mode
E Open frame type T Silent type

7
1-3
Model
Item
YDE7500X/E
YDE7500T/YDE7500TD
YDE7500X3/E3
YDE7500T3/YDE7500TD3
Rated frequency HZ
50
60
50
60
Rated power kVA
5
5.5
6.3
6.9
Rated voltage(V )
115/230
240/120
400/230
416/240
Rated current (A)
43.47/21.74
22.9/45.83
9.09
9.57
Phase No.
Single phase
Three phase
Power factor (cosΦ)
1
0.8 (Lag)
Rated revolution speed
(r/min)
3000
3600
3000
3600
Excitation mode
Controlled silicon self-excitation constant voltage
DC output
12V 8.3A
Coupling method
Transmission rigid connection
Model
YD188FAG
Engine
Type
4-stroke, single-cylinder, air-cooled, direct injection diesel engine
Displacement (L)
0.456
Bore x stroke (mm)
88*75
Lube oil capacity (L)
1.7
Rated power kW
3000 r/min: 6.7 3600 r/min: 7.5
Fuel type
Diesel 0# (summer) -10# (winter) -35# (chilling)
Lube oil brand
L-ECD grade 15W30 15W40
Generating Set
Low oil alarm system
With
Fuel tank capacity(L)
E/E3:12.5 T/TD/T3/TD3:14.5
Overall dimensions
(LxWxH)(mm)
YDE7500X/E: 750x510x710
YDE7500T/TD:950x550x743
YDE7500X3/E3: 750x510x710
YDE7500T3/TD3:
950x550x743
Net weight kg
X/E:106, T/TD:155
Structure mode
X/E Open frame type T/TD Silent type

8
1-4
Model
Item
YDE8500X/E
YDE8500T/YDE8500TD
YDE8500X3/E3
YDE8500T3/YDE8500TD3
Rated frequency HZ
50
60
50
60
Rated power kVA
6
6.5
7.5
8.2
Rated voltage(V )
115/230
240/120
400/230
416/240
Rated current (A)
52.17/26.08
27.08/54.16
10.8
11.38
Phase No.
Single phase
Three phase
Power factor (cosΦ)
1
0.8 (Lag)
Rated revolution speed
(r/min)
3000
3600
3000
3600
Excitation mode
Controlled silicon self-excitation constant voltage
DC output
12V 8.3A
Coupling method
Transmission rigid connection
Model
YD192FAG
Engine
Type
4-stroke, single-cylinder, air-cooled, direct injection diesel engine
Displacement (L)
0.498
Bore x stroke (mm)
92*75
Lube oil capacity (L)
1.7
Rated power kW
3000 r/min: 7.5 3600 r/min: 8.2
Fuel type
Diesel 0# (summer) -10# (winter) -35# (chilling)
Lube oil brand
L-ECD grade 15W30 15W40
Generating Set
Low oil alarm system
With
Fuel tank capacity(L)
E/E3:12.5 T/TD/T3/TD3:14.5
Overall dimensions
(LxWxH)(mm)
YDE8500X/E: 750x510x710
YDE8500T/TD:950x550x743
YDE8500X3/E3: 750x510x710
YDE8500T3/TD3:
950x550x743
Net weight kg
X/E:111, T/TD:160
Structure mode
X/E Open frame type T/TD Silent type
Instruction: the noise list indicates the noise emission level while not the safe working noise level.
Although the noise emission level is related to the sound exposure level, it is not the judging standard for
whether applying noise protection.
Factors affect the practical noise level include: the ambient condition and other noise source, such as
the quantity of working machine or the working hours in noisy condition. Furthermore, the sound
exposure level varies among different countries.

9
2. CONFIGURATION
a .Parts Illustration (YDE SERIES X/E,X3/E3)
Fuel tank Air cleaner
Control panel Recoil starter
Decompression lever Starting handle
Engine speed lever Oil dipstick
Oil drain plug
Fuel filler cap
Muffler

10
b. Parts Illustration (YDE series T/T3/TD/TD3 )
Fuel filler cap Lifting hook
Control panel
Brake
Maintenance door
Muffler exhaust outlet
Heat outlet
Access door

11
3. PREPARATION FOR STARTlNG
3.1 Selection and handling of the fuel oil
■Selection of fuel
OnIy use the Iight diesel, which is most suitable for the engine.
■Keep dust and water out of the fuel
When filling the fuel tank from drums, make sure that no dust or water is mixed in the fuel. Otherwise the
serious fuel injection pump and nozzle problems will result.
■Do not overfiII
Overfilling is very dangerous. Do not fill the tank beyond the top of the red plug inside the fuel oil filter.
WARNING
■Refuel in a well-ventilated area with the engine stopped.
■Do not smoke or allow flames or sparks in the area where the engine is refueled or where the fuel oil
stored.
■Do not overfill the tank, make sure the filler cap is securely closed after refueling.
■Be careful not to spill fuel when refueling. If any fuel is spilled, make sure the area is dry before
starting the engine.
3.2 Check and refiling the engine oil
WARNING
■Always check the engine oil level with the generating set on a level surface before starting and refill if
necessary.
■The engine may be damaged if operated with insufficient engine oil, it is also dangerous to refill too
much engine oil as sudden increase in engine speed may be caused by its combustion.

12
CAUTlON:
NORTHMARK YDE series generating set are equipped with low oil warning system. This system will
stop the engine automatically when the oil level falls below the lower level. This prevents accidents such
as bearing seizures, etc.
■Select the most applicable engine oil
lt is very important to select the applicable engine oil for keep up the performance and life of the
generating set. lf inferior engine oil is used, or if your engine oil is not replaced periodically, the risk of
piston seizure, piston ring sticking and accelerated wear of the cylinder liner, bearing and other moving
components increases significantly. So the generating set life will be shortened. NORTHMARK
recommends CC/CD oil classified by APl. Choose the applicable viscosity oil according to the local
ambient temperature.
3.3 Service the air cleaner
1. Screw off the wing nut, remove the air cleaner cover and
take out the element.
CAUTION:
■Do not wash the element with detergent.
■Replace the element when its output decrease or a bad
exhaust color is noticed.
■Never run the generating set without the element,
otherwise the rapid engine wear wilI result.
X/E type
T type

13
2. Reattach the air cleaner cover and screw on the wing nut.
3.4 Check the generating set
1. Turn off the main switch and any other loads.
WARNING
■Be sure to turn off the main switch before starting.
■The generating set should be earthed to prevent electric shocks.
WARNING
■The generating set should be earthed to prevent electric shocks.
CAUTION
■The main switch should always be kept in the "ON" position during operation.
■Before starting the engine, be sure to turn the switches of the working instrument (lighting apparatus,
motor, etc.) to their "OFF" position. If the switches are not "OFF", the sudden application of load when
the engine is started could be very dangerous.
3.5 Break-in period operation
The first 20hrs are the break-in period of the engine, the operator must obey to following items:
■Warm up the engine 5 minutes after the initial starting. Run the engine at low speed and zero load
before the engine becomes warm.

14
■Avoid applying any heavy loads during the break-in period. NORTHMARK recommends to run the
engine at 3000r/min with 50% load in break-in period.
Replace the engine oil on time.
■Replace the engine oil while the engine is warm after 20-hours-running, the old engine oil will be
drained out completely.
Approx. one month or 20hours Every 3 months or 100 hours

15
4. START THE GENERATING SET
WARNING
■Do not hook up tools or other apparatus to the generating set before starting.
4.1 Recoil starting
Start the engine according to the following procedures:
1. Open the fuel cock.
2. Set the engine speed lever at the RUN position.
3. Pull out the recoil starter handle.
■Pull out the handle until you feel the resistance, then return
it back to the initial position. Press down the decompression lever.
■It will return automatically when the recoil starter is pulled.
■Pull out the recoil starter handle briskly with both hands.
CAUTION
■Do not allow the handle grip to snap back against the engine. Return it gently to prevent damage to
the starter.
■When the engine is difficult to start in cold weather, remove the screw plug from the cylinder head
cover and add 2cc engine oil.
CAUTION
■Always screw on the screw plug on the cylinder head cover except filling, to prevent the rain and dirty
flowing into the engine body. Otherwise the quick wear of the internal parts and other serious problems
will result.

16
Recoil starting

17
Recoil starting

18
4.2 Electric starting
1. Starting (The preparations for electric starting are the same as for the recoil starting.)
■Open the fuel cock.
■Set the engine speed lever at "RUN" position.
■Turn the starting key clockwise to "START" position.
Remove your hand from the key as soon as the engine starts.
If the starting motor does not start after 10 seconds, wait 15
seconds before starting it again.
CAUTION
■Run the starting motor for long time will cost the battery power greatly even burn out the motor.
■Always leave the starting key at "ON" position while the engine is running.
2. Battery
Check the battery voltage before starting generator set every time.

19
5. OPERATE THE GENERATING SET
5.1 Operate the generating set
1. Warm up the engine without load three minutes.
2. Concerning the generating set with Low Oil Warning System,
check that the Oil Alarm Lamp is not lit.
CAUTION
■For the generating set with Low Oil Warning System, the Oil Alarm Lamp will activated by low oil
pressure or engine oil shortage, simultaneously, the engine will stop. The engine will stop immediately if
restarted without refilling the engine oil. Check the oil level and refill.
■Do not loosen or readjust either the engine speed limiting bolt or fuel injection limiting bolt, otherwise,
the performance will be affected.
5.2 Checks during the running
1. Whether there is abnormal sound or vibration;
2. Whether the engine miss fires or runs rough;
3. Check the color of the exhaust. (ls it black or too white?)
lf you notice any of the above-mentioned phenomenon happened, stop the engine and find out the fault
cause or contact with NORTHMARK agent.
CAUTION
■If the engine has been running, the muffler will be very hot. Be careful not to touch the muffler.
■Never refill the fuel tank while the engine is running.