LONCIN LC2V80FD Bedienungsanleitung
LC2V80FD
Maintenance Manual
LONCIN MOTOR CO., LTD.
SAFETY INFORMATION
Before operating
and maintaining the engine,
please carefully read and understand the
Maintenance Manual. To use the machine safely
and efficiently, you must conduct proper
maintenance and operation to the machine.
The following identifications throughout the
Manual may g
ive prompts to operators and
maintainers as well as illustrate matters that
cause dangers.
The identification reminds you to
note that it may cause severe personal injury or
death which is imperative.
The identification reminds you to
note that it may ca
use severe personal injury or
death or improper operation.
This identification reminds you to
note that it may cause personal injury or property
damage or improper operation.
Be vigilant to fuel oil, exhaust emissions and
moving parts to avoid severe perso
death.
Add fuel carefully!
● Gasoline is inflammable.
Please add the
fuel oil in the outdoor, well-
ventilated area after
the engine is stopped.
●
It is prohibited to smoke when adding
gasoline and be away from flame and spark.
● It is
prohibited to start the engine before the
gasoline splashed area is dry.
Heat Exhaust
●
The temperature of silencer can be very
high during the operation of engine; even if the
SAFETY INFORMATION
and maintaining the engine,
please carefully read and understand the
Maintenance Manual. To use the machine safely
and efficiently, you must conduct proper
maintenance and operation to the machine.
The following identifications throughout the
ive prompts to operators and
maintainers as well as illustrate matters that
The identification reminds you to
note that it may cause severe personal injury or
The identification reminds you to
use severe personal injury or
This identification reminds you to
note that it may cause personal injury or property
Be vigilant to fuel oil, exhaust emissions and
moving parts to avoid severe perso
nal injury or
Add fuel carefully!
Please add the
ventilated area after
It is prohibited to smoke when adding
gasoline and be away from flame and spark.
prohibited to start the engine before the
The temperature of silencer can be very
high during the operation of engine; even if the
machine is stopped for a moment, it would be
hot.
Be careful not to touch the
Prior to
maintenance, the engine shall be placed
indoor and cooled down.
●
To prevent fire, when the engine is working,
the distance between the engine and the wall
shall be kept at least 1 m.
away from the engine.
Carbon Monoxide Poisoning
●
The exhaust contains poisonous carbon
monoxide.
Avoid inhaling the exhaust.
● Don’t use indoors.
●
Don’t operate the engine in the closed
garage or enclosed area.
General Precautions
●
Carefully read the Maintenance Manual, g
familiar with all the
control
correct using and maintenance & installing
method of the machine and master the operating
method of stopping and fast separating the
machine.
●
When you feel fatigue, have discomfort or
have a drink, plea
se don’t operate the engine;
otherwise, it may cause severe injury.
●
Children and people who don’t read the
Manual or without training are prohibited to use
the engine.
●
Don’t repair the machine without mastering
the method of engine repair.
● Don’t refi
t the machine or change its
structure. Once the machine loses its balance, it
may easily cause damages and injury incidents.
machine is stopped for a moment, it would be
Be careful not to touch the
burning silencer.
maintenance, the engine shall be placed
To prevent fire, when the engine is working,
the distance between the engine and the wall
Inflammables must be
Carbon Monoxide Poisoning
The exhaust contains poisonous carbon
Avoid inhaling the exhaust.
Don’t operate the engine in the closed
General Precautions
Carefully read the Maintenance Manual, g
et
control
mechanisms and the
correct using and maintenance & installing
method of the machine and master the operating
method of stopping and fast separating the
When you feel fatigue, have discomfort or
se don’t operate the engine;
otherwise, it may cause severe injury.
Children and people who don’t read the
Manual or without training are prohibited to use
Don’t repair the machine without mastering
the method of engine repair.
t the machine or change its
structure. Once the machine loses its balance, it
may easily cause damages and injury incidents.
Contents
Part I Technical Specifications
1-1 Introduction of engine .................................................................................................................................... 1
1-2 Technical parameters ..................................................................................................................................... 3
1-3 Model installation dimensional drawing ........................................................................................................ 4
1-4 P.T.O dimensional drawing ........................................................................................................................... 7
1-5 Electric wiring diagram ................................................................................................................................. 9
Part II Repair Instructions
2-1 Maintenance precautions ............................................................................................................................. 10
2-2 Marking position of machine No. ................................................................................................................ 11
2-3 Maintenance standards ................................................................................................................................. 12
2-4 Torque parameters of fasteners .................................................................................................................... 13
Part III Maintenance
3-1 Maintenance schedule .................................................................................................................................. 15
3-2 Change engine oil ........................................................................................................................................ 16
3-3 Maintenance of air filter .............................................................................................................................. 18
3-4 Maintenance of silencer ............................................................................................................................... 19
3-5 Maintenance of spark plug ........................................................................................................................... 20
3-6 Adjustment of valve clearance ..................................................................................................................... 21
3-7 Adjustment of idle speed ............................................................................................................................. 21
3-8 Adjustment of speed regulator ..................................................................................................................... 22
3-9 Storage of engine ......................................................................................................................................... 23
Part IV Faults Diagnosis
4-1 Difficulty of engine in starting ..................................................................................................................... 25
4-2 Underpower of engine .................................................................................................................................. 26
4-3 Rotating speed instability of engine ............................................................................................................. 27
4-4 Abnormal exhaust colors of engine .............................................................................................................. 28
4-5 Engine is easily to be flameout .................................................................................................................... 29
4-6 Engine has no high speed ............................................................................................................................. 29
4-7 Overheat of engine ....................................................................................................................................... 30
4-8 Abnormal noises of engine ........................................................................................................................... 31
4-9 Fault of electric starting system ................................................................................................................... 32
Contents
4-10 Check the cylinder pressure ....................................................................................................................... 33
4-11 Detection of spark ...................................................................................................................................... 33
Part V Disassembly & Repair
5-1 Precautions on disassembly/assembly ......................................................................................................... 34
5-1-1 Disassembly .............................................................................................................................................. 34
5-1-2 Assembly .................................................................................................................................................. 34
5-2 Disassembly and maintenance of engine...................................................................................................... 35
5-2-1 Air filter .................................................................................................................................................... 35
5-2-2 Silencer ..................................................................................................................................................... 36
5-2-3 Fan cover - starting control switch ............................................................................................................ 37
5-2-4 Carburetor ................................................................................................................................................. 40
5-2-5 Speed-regulating mechanism .................................................................................................................... 43
5-2-6 Flywheel and ignition coil ........................................................................................................................ 44
5-2-7 Cylinder head and valve ........................................................................................................................... 47
5-2-8 Secondary oil filter, breather slot and air guide sleeve ............................................................................. 52
5-2-9 Crankcase, crankshaft and piston ............................................................................................................. 54
Part I Technical Specifications
- 1 -
1-1 Introduction of engine
Engine switch
Oil condenser
Secondary oil filter
Oil drain bolt
Throttle handle
Choke-valve
handles
Silencer
Spark plug cap
Fuel pump
Air filter
Part I Technical Specifications
- 2 -
Air filter - protect the engine through filtering dusts and impurities in the air.
Spark plug - input high voltage at ignition coil to the engine combustor, generate spark through
air discharge between electrodes and introduce combustion of mixed gases.
Silencer - a device to prevent the transmission of engine sound and reduce the noise of exhaust
system.
Fuel filter - filter impurities in the fuel through oil pipes between fuel tank and carburetor.
Oil condenser - pump the engine oil into it through the oil pump and enter the lubricating main oil
gallery after it is cooled down by the cooling fin.
Secondary oil filter - oil passes it to filter impurities and then enters the lubricating main oil
gallery.
Choke-valve handle - cold start the engine and close the choke valve, the carburetor would supply
concentrated mixed gas, which makes the engine to be easily started. After preheating the engine,
fully open the choke-valve handle.
Engine switch - before starting the engine, turn the switch to “ON” position; the engine can be
shut down when turning the switch to “OFF” position.
Throttle handle - turning throttle handle may adjust the rotating speed of the engine to achieve
the power and rotating speed expected.
Oil drain plug - swinging out drain plug may drain all the oil in the engine out so as to replace the
oil.
Part I Technical Specifications
- 3 -
1-2 Technical parameters
The rated power of the engine indicated in the Manual is the net output power (net power) at 3,600 rpm of an
engine under the production status measured in accordance with SAE J1349. For mass production engines, the
value may vary.
The actual power of engine installed on the terminal may vary in output, which depends on several factors
including the rotating speed of engine during practical use, environmental conditions, maintenance and other
variants.
Single-engine Power Unit Power
Type of Engine Double-cylinder, four-stroke-cycle, forced-
air cooling and overhead
valve
Air displacement
(diameter of cylinder × stroke) 764ml（80mmX76mm）
Maximum power
(kW/3600rpm) 19
Maximum torque (N·m)
Corresponding rotating speed (rpm)
52/2800
Fuel consumption rate
(g/kW·h) ≤ 350
Idle speed
(rpm) 1,800±150
Speed fluctuation rate ≤ 10%
Compression ratio 8.7:1
Starting mode Electronic start
Direction of rotation Anticlockwise (output terminal)
Valve clearance (mm)
Inlet valve 0.10 ~ 0.15
Exhaust valve 0.15 ~ 0.20
Spark plug RC12YC
Spark plug gap (mm) 0.7 ~ 0.8
Ignition mode Transistorized magneto ignition
Type of air filter Double filter cartridge
External dimensions (mm)
L × W × H 507×502×690 507×502×500
Net weight (kg) 50 49
Part I Technical Specifications
- 4 -
1-3 Model installation dimensional drawing
Unit power
Part I Technical Specifications
- 5 -
Single-engine power
Part I Technical Specifications
- 6 -
Crankcase cover interface dimensions
Mounting size of base
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