Puxing PX1200BG User manual

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Bio Gas Generators Operation Manual
SHENZHEN PUXIN TECHNOLOGY CO., LTD
Http:www.puxintech.com Tel:[phone]

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Content
Ⅰ.Safety Precautions…………………..2
Ⅱ.Preparation before Operation……………….2
Ⅲ.Start, Stop and Storage………………3
Ⅳ.Maintenance…………………………4
Ⅴ.Troubleshooting……………………..5
Ⅵ.Specification…………………………8
Ⅶ.Certificate of Compliance……………9
Ⅷ.Packing List………………………….9

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Ⅰ.Safety Precautions
To ensure safe and reliable, please comply with the following precautions when using the
generators. Otherwise, it may lead to the invalidity of the generator guarantee commitment, also
may damage the generator or injury people.
1. To prevent from being poisoned, never use the machine indoor or anywhere with air blocked
2. Do not use in rain, snow and other wet environment.
3. Do not connect with the public power supply line.
4. Please keep the generators from the combustible at least one meter.
5. Please operate the machine on the flat floor.
6. Do not leave children or pets near the machine when using the generator.
7. This is air-cooled generator. To ensure normal engine cooling, you should remove the dirt on the heat sink,
fan cover, fan, etc.
8. Operator should be familiar with operation principle and generator structure. know how to emergency stop
and control the operation of all components. Not allow untrained personnel to operate the machine, insist
on periodic maintenance, and fix up the machine on time when there is problem. Prohibit working when
out of work.
9. Gas inlet should be sealed tightly , prohibit gas leakage.
10. To avoid scalding, don’t touch the muffler and related hot parts during operation or when just finished
using the generator.
Ⅱ.Preparation before Operation
1. Engine oil is a main factor to affect the performance and the working life of generator, please don’t use the
two stroke oil and the lubricant which mixed with additive, otherwise, it will reduce the generator working
life because of lacking of lubricating property.
2. Please stop running and put it on the flat floor when you check the engine oil level. SAE10W-30 is
recommended at normal temperature. Please see the following for checking step:

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1）Remove the oil feet, and wiped the oil.
2）Feet into the oil filler, do not tighten it, check oil level.
3）If the oil-foot oil is not stained, indicating that the oil level is too low, then you should add the
recommended oil to the fuel filler
4）Replace the oil-foot .
Notice: it would damage the engine if you run the generator when the oil level is too low.
3. Hand-pulling the starter 2 to 3 laps to check whether it is in normal compression
Ⅲ.Start, Stop and Storage
1. Turn on the gas valve and ignition switch, and pull the choke to the closed position
2. Pull the starter rope slowly several times, and then quickly tug starter rope, open the choke immediately
after starting the engine.
Notice:
Keep the generator running for 3~5minutes without load, and check weather there are parts loose, any
oil leakage or governor failure. By listening auscultation to check for percussion, loosen and other
abnormal noises, if found, you should stop the generator and check.
Suddenly increase the load after starting is prohibited, for it would damage the spare parts.
3. Stop Gradually lifted load, and keep the generator running 4 to 5 minutes without load to cooling the
engine, then turn off the gas valve and ignition switch for stopping the engine.
Notice:
Suddenly stop the generator when it is running with heavy load is prohibited, for it would damage the
spare parts.
4. Storage If the generator needs long-term storage, you should keep it according to the bellows t o
prevent rust:
1) Remove the engine oil and dust on the engine surface.
2) Remove the spark plug, drop 20~25 drops engine oil for lubrication from the spark plug hole to the
cylinder, turn the crankshaft for a few laps, then put the piston on the top position where it walks, fit on the
spark plug and clean the generator surface.
3) Pack in poly bag and place in dry and ventilated place

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Ⅳ.Maintenance
To have generator in good condition, reduce parts depreciation and prolong its working life, technical
maintenance of the system must be strictly enforced. .please stop the engine before maintenance.
Item
Specific operation
Check
before
running
Every
month or
the first 20
hours
operation
every 3
months
or every
50 hours
every 6
months
or every
100
hours
every
year or
every
300
hours
Spark plug
Check the ignition
system, adjust the
electrode gap to
0.7-0.8mm,clean the
carbon deposit or
change the spark plug
√
Lubricant
Check the engine oil
level, oil leakage, air
leakage
√
change the lubricant
√
Air filter
Clean and replace if
necessary
√
Valve lash
Check and adjust after the
engine cooling
√
All
cleaning
Remove the cylinder
head, cylinder body and
piston rings, then clean all
the carbon deposit
√
1. Change the lubricant
1) Put the generator on the flat floor, start for a few minutes to raise the temperature of the oil
then stop, unscrew the filler plug.
2) Put a box under the engine, unscrew the oil drain plug, then the oil will discharge from the
crankcase
3) Check the oil drain plug, seal and screw down.
4) Fill enough lubricant to the prescribed maximum of the oil filler.
5) Fit with oil drain plug and packing washer (change if it was broken), don’t fall off foreign
body into the crankshaft box
2. Clean the air filter
Don’t start the generator without air filter, or it would lead to cylinder damaged, don’t twist the
foam filter, it will make damage.
1) Unscrew the nut, and remove the shell of the air filter,
2) Take out foam filter from the shell of the air filter
3) Clean the foam filter by uninflammable wash buffer and squeeze dry.
4) Use air filter oil or SAE#20 lubricant to soak the foam filter, then nipping out a folded
excess oil, remain the foam filter slightly oily state.

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5) Put the foam filter back into the shell of the air filter and make sure the foam filter at the
right position without spare room
6) Install the shell of the air filter then fix the clips
Ⅴ.Troubleshooting
1. Engine startup failure, causes and troubleshooting
phenomenon
causes
solutions
Normal
compression
ratio
Normal
spark
plug
Abnormal
intake
system
Poor
intake
or no
intake
Did not open the gas
valve
Open the gas valve
The main plug jet
Re-cleaning, blowing
through
Normal
intake
Inlet pressure error
Adjust the inlet pressure
The gas composition
error
Use the regulated gas
Normal
intake
system
Normal
high
voltage
spark
Abnormal
spark plug
Electrode dirt , carbon
deposit
Remove the dirt and
carbon deposit
Insulator damage,
severe burning cloud
electrode
Change the spark plug
Electrode gap not proper
Adjust the electrode gap
Abnormal
high
voltage
spark
Normal
spark
plug
High-voltage damage
Change the high-voltage
Magneto stator coil
damage
Chang the ignition stator
Magnet demagnetization
Change the flywheel
Abnormal
compression
ratio
Normal
Gas
supply
system
Abnormal
ignition
system
Piston ring wear overrun
Change with new piston
ring set
Piston ring break off
Change with new piston
ring set
Piston ring cement
Remove the carbon
deposit
No spark plug gasket or
not tighten
Fixed with gasket and
tighten
Between Cylinder body
and cylinder head
joint surface leakage,
Check cylinder head
gasket and cylinder
block roughness of
cylinder head joint
surface, screw cylinder
head bolt according to
the required torque and
sequence.
Valve leakage
Check Valve lash and
valve sealing, repair if
necessary

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2. Power decline, causes and Solutions.
phenomenon
causes
solutions
the speed
slowed, and
in severe
decline or
extinction
speed
When rise
the
Throttle
Gas supply
system
Intake system jet
Cleaning, blowing through or
change the new parts
Combustion chamber
have carbon deposit
Remove the carbon deposit
Muffler or exhaust dirt
Remove the dirt
Air filter jet
Clean the air filter
Inlet is leaking
Repair or change
Abnormal
compression
ratio
Piston, Cylinder, piston
ring attrition
Change the damage part
Cylinder block, cylinder
head joint surface leakage
Change cylinder gasket
Valve lash too big or
small
Readjust
The valve not sealed
repair
3. Engine abnormal running, causes and Solutions.
phenomenon
cause
solutions
Percussion noise from
engine
Piston, cylinder, piston ring
excessive wear
Change the damage parts
Piston pin and pin hole wear
Change the piston pin and pin hole
Connecting rod hole excessive
wear
Change the Connecting rod
Bearing which connected with
Crankshaft broken
Change the bearing
deflagration
Engine excessive heat
Find possible cause
Cylinder have carbon deposit
Clean the carbon deposit
Unqualified gas
Change with qualify gas
Engine missing
Spark plug electrode gap
improper
Adjust the electrode gap
Faulty Magneto
Check and change the broken parts

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4 Engine suddenly stop running, cause, and solutions
phenomenon
Causes
Solutions
Suddenly
stop running
Intake
system
Empty fuel
Change the gas supply
Air pipe Jet
Check the pipe and make it through
Ignition
system
Spark plug broken or short
circuit because of carbon
deposit
Change spark plug
Side electrode spark plug
off
Change the spark plug, and fixed the
electrode
Ignition coil took off
Re-welding
Magneto short circuit
Change
The stopping-line touch the
engine body
Find the bond strap, re-insulation
others
scuffing, air valve off
Repair the broken parts
5. Engine overheating, cause, and solution.
phenomenon
causes
solutions
Engine Overheating
Lack of lubricant
Fill lubricant
Exhaust jet
Clean the exhaust
Wind guide cover is leaking
Repair the broken parts
Radiator jet
Clean the Radiator
Cooling-fan loosen and can
not work
Re-install
Connecting rod deformation
cause damage between piston
and cylinder
Change the connecting rod
Cylinder, piston, piston ring
wear, cause unsealed between
cylinder and crankcase
Change the wear parts
Generator governor
improperly adjusted, resulting
in high speed
Adjust governor
Bearing which connected with
Crank shaft was burned
Change the bearing
Notice: keeps the engine running with normal temperature, generally speaking, 80ºC~110ºC is
allowed at the air outlet in front of Wind guide cover. And the temperature of crankcase should
be around 60 ºC, or we say the engine is overheating.

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6．Percussion noise when running, causes and solutions
phenomenon
causes
Solutions
Percussion noise
Piston, cylinder, piston ring wear
Change broken parts
Connecting rod, Piston pin and pin
hole wear
Change broken parts
The main bearing wear
Change bearing
Piston ring broken
Change piston ring
Metal percussion
when deflagration
Carbon deposit in cylinder
Remove the carbon deposit
Spark plug electrode gap improper
Adjust electrode gap
Cam Bushing loosen
Re-install or change
Engine overheating
Find the cause and
troubleshooting
others
Improper adjustment of valve lash
Re-adjust the valve lash
Flywheel and crankshaft connection
loose
Reinstall
Ⅵ.Specification
PX1200BG
PX1500BG/EBG
PX3600BG/EBG
engine
Model
PX154F
PX168-1
PX188F
Type
Single cylinder, air-cooled, 4-strock, OHV
Ignition system
C. T. I.
Reference inlet air
pressure(Kpa)
2.8 + 0.5
Oil volume(L)
0.4
0.6
1.1
Noise level at seven
meters(db)
63
67
74
Generator
Related frequency(Hz)
50 60
Related voltage(V)
110 220 380 110/220 120/240
Related power(KW)
0.5
1.5
3.0
Max power (KW)
0.6
1.8
3.5
packing
length(mm)
460
610
700
width(mm)
370
440
525
height(mm)
385
450
560
Weight(KG)
28
41/44
72/76

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Ⅶ.Certificate of Compliance
Bio Gas Generator
Qualification Certificate
We hereby certify that this generator is in conformity with the relative
standard, agree to delivery.
FQC:
Ⅷ.Packing List
NO.
Item
Unit
quantity
remark
1
Bio Gas
generator
Set
1
2
Plug
Piece
1 or more than 1
According to the
control panel
socket
3
Attached tools,
screwdriver and
special wrench
socket for spark
plug
Piece
each have 1
4
Technology
document
Piece
1
5
Operation
manual
Piece
1
6
certificate
piece
1
Part of the
operation
manual
Carrier: