4.1.5 Air cleaner
A dirty air cleaner will obstruct air from entering carburetor, thus reduces the
engine working efficiency. If the engine is running in dusty area, clean the air
cleaner more frequently.
Caution: Never run the engine without the element or with a defective element,
the dirt may enter into engine to accelerate the engine damage.
Checking/cleaning:
(1) Loosen screws on service cap, remove the service cap.
(2) Push off the locking plate on the top of air cleaner, remove the air cleaner.
(3) Take out the filter element.
(4) Wash the element in warm soap water, rinse it and air dry completely. Or
clean with high fire point solution and air dry.
Soak the element in clean engine oil, squeeze out redundant engine oil. The
redundant engine oil may prevent air to enter into foam element and would smok
at engine starting.
(5) Reinstall the element in air cleaner. If necessary, clean the air cleaner rubber
and housing. Make sure that the seal ring of air cleaner cover is secured.
(6) Reinstall the air cleaner cover. Reinstall parts in order. Lock the locking plate
on the top of air cleaner. Make sure that the seal ring of air cleaner cover is
secured. If the seal ring of air cleaner cover is damaged, replace it.
(7) Reinstall the service cap.
Caution: If the cover of air cleaner installed not tightly, it would fall during engine
running due to vibration. Never run the engine without air cleaner or with a
defective air cleaner to prevent accelerated wear of engine.
Service: The fault phenomena is fluctuation of engine running and incapable of
power raising-------insufficient air intake.
Cause: (1) Dirty air enters; (2) Exhaust gas feedbacks during engine running,
which causes incomplete combustion in engine and carbon deposition on oil
nozzles.
Remedy: Repeat the above-mentioned steps for cleaning. Refer to engine service
for oil nozzle faults.
4.1.6 Muffler
a. Removing and reinstalling
Caution: Remove and reinstall the muffler after the engine is cooled down.
(1)Protective hood of muffler
In quiet generating set the cooling plate must be removed, then remove the
muffler.
(2)Muffler (Installation: Before installing, tap muffler with a plastic hammer to
remove internal carbon deposition.)
(3)Gasket of muffler (Can not be reused)
Service 1: The fault phenomena is black smoke emitted from exhaust port during
engine running -------insufficient air intake.
Cause: (1) Dirty air enters; (2) Exhaust gas feedbacks into air cleaner during
engine running, which causes incomplete combustion in engine and carbon
deposition on oil nozzles.
Remedy:Repeat the above-mentioned steps for cleaning. Refer to engine service
for oil nozzle faults.
Service 2: The fault phenomena is black smoke emitted from exhaust port during
engine running ------generating set is overloaded
Cause:1.Generating set is overloaded. 2.Engine oil nozzle and oil pump have
faults causing incomplete combustion in engine and carbon deposition on oil
nozzles.
Remedy: 1.Repeat the above-mentioned steps for cleaning. 2.Reduce the loading
power of generating set. 3. Refer to engine service for oil nozzle faults.
4.2 Control panel
This section mainly deal with the remedy for faults caused by air switch, voltmeter,
electric switch lock, receptacle or PCB in control panel, and actions which should
be taken while the generating set faults such as no voltage output, no voltage
indication, not starting, automatic stopping, etc. present.
4.2.1 A.C. receptacle
Check: Connect two poles of receptacle with a jumper. The current should flow
normally between conductor terminals. There is current passed between
receptacle ground terminal and receptacle installing set.
Air cleaner
Right side plate
Cover plate of
cleaner
(Fig.) Cleaning of air cleaner
Nut
Tail-gas turning weldment
Plain washer
BoltM6x30
Second stage muffler assembly
Bolt M8x30
Bolt M8x16
First stage muffler
assembly
Exhaust pipe assembly
Nut M8
Buckle I
Spring washer
Plain washer
Gasket for exhaust pipe
(Fig.) Muffler
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