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MAINTENANCE
MAINTENANCE, REPLACEMENT OR REPAIR OF THE
EMISSION CONTROL DEVICES AND SYSTEMS MAY
BE PERFORMED BY ANY NON-ROAD ENGINE REPAIR
ESTABLISHMENT OR INDIVIDUAL.
Carburetor adjustment (Fig. 13)
The carburetor is a precision part that mixes air and fuel, and
it is designed to ensure high performance from the engine.
Before the tool is shipped from the factory, its carburetor is
adjusted during a test run. Only make adjustments if it is
necessary because of environmental conditions (the climate
or atmospheric pressure), the type of fuel, the type of two-
cycle oil, etc.
WARNING
○ Because the carburetor is manufactured with a high
degree of precision, do not disassemble it.
○ For this product, the only setting of the carburetor that
can be adjusted is the idle speed (T).
T = Idle speed adjustment screw.
Idle speed adjustment (T)
Check that the air fi lter is clean. If adjustment is required,
turn IDLE speed Adjustment Screw (T) close (clockwise)
to increase engine speed, open (counterclockwise) to
decrease engine speed. Standard Idle rpm is 2800-
3200 rpm.
CAUTION
The above adjusting procedure must be followed when
adjustment is MADE or DAMAGE to engine will occur
because of the incorrect condition.
NOTE
Some models sold areas with strict exhaust emission
regulation do not have high and low speed carburetor
adjustments. Such adjustments may allow the engine to
be operated outside of their emission compliance limits.
For these models, the only carburetor adjustment is idle
speed.
RECOMMENDATION
CARBURETOR ADJUSTMENT NEEDS THE SKILL OF
EXPERIENCED OR WELL TRAINED PEOPLE, OR IS
RECOMMENDED TO TAKE THE UNIT TO TANAKA
DEALER.
Air fi lter (Fig. 14)
The air fi lter (11) must be cleaned from dust and dirt in order
to avoid:
○ Carburetor malfunctions.
○ Starting problems.
○ Engine power reduction.
○ Unnecessary wear on the engine parts.
○ Abnormal fuel consumption.
Clean the air fi lter daily or more often if working in
exceptionally dusty areas.
Cleaning the air fi lter (Fig. 14)
Open the air fi lter cover (12) and remove the air fi lter (11).
Clean it.
Check that the fi lter is dry before reassembly.
An air fi lter that has been used for some time cannot be
cleaned completely. Therefore, it must regularly be replaced
with a new one. A damaged fi lter must always be replaced.
Fuel fi lter (Fig. 15)
Remove the fuel fi lter (13) from the fuel tank, and replace it
if it is dirty.
NOTE
A blocked fuel fi lter (13) can prevent the supply of fuel
and cause a rotation malfunction of the engine.
Spark plug (Fig. 16)
When removing the spark plug, twist and remove the plug
cap covering the spark plug as shown in the illustration.
(Fig. 17)
The spark plug condition is infl uenced by:
○ An incorrect carburetor setting.
○ Wrong fuel mixture (too much oil in the gasoline)
○ A dirty air fi lter.
○ Hard running conditions (such as cold weather).
These factors cause deposits on the spark plug electrodes,
which may result in malfunction and starting diffi culties. If
the engine is low on power, diffi cult to start or runs poorly at
idling speed, always check the spark plug fi rst.
If the spark plug is dirty, clean it and check the electrode
gap. Re-adjust if necessary. The correct gap is 0.6 mm.
The spark plug should be replaced after about 100
operation hours or earlier if the electrodes are badly
eroded.
NOTE
In some areas, local law requires using a resistor spark
plug to suppress ignition signals. If this machine was
originally equipped with resistor spark plug, use same
type of spark plug for replacement.
For long-term storage
Drain all fuel from the fuel tank. Start and let engine run until
it stops. Repair any damage which has resulted from use.
Clean the unit with a clean rag, or the use of high pressure
air hose. Put a few drops of two-cycle engine oil into the
cylinder through the spark plug hole, and spin the engine
over several times to distribute oil.
Cover the unit and store it in a dry area.
Maintenance schedule
Below you will fi nd some general maintenance instructions.
For further information please contact Tanaka dealer.
Daily maintenance
○ Clean the exterior of the unit.
○ Check that the air intake at the guard net is not clogged.
○ Check the guard net for damage or cracks. Change the
guard net in case of impacts or cracks.
○ Check that nuts and screws are suffi ciently tightened.
Weekly maintenance
○ Check the starter, especially the cord.
○ Clean the exterior of the spark plug.
○ Remove the spark plug and check the electrode gap.
Adjust it to 0.6 mm, or change the spark plug.
○ Clean the air fi lter.
Monthly maintenance
○ Rinse the fuel tank with gasoline, and clean fuel fi lter.
○ Clean the exterior of the carburetor and the space
around it.
Quarterly maintenance
○ Clean the cooling fi ns on the cylinder.
○ Clean the fan and the space around it.
○ Clean the muffl er of carbon.
CAUTION
Cleaning of cylinder fi ns, fan and muffl er shall be done
by a Tanaka dealer.
SELECTING ACCESSORIES
The accessories of this machine are listed on page 193.
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