Maintenance - Tanaka TCG 31 EBS Handling Instructions Manual

How to use nylon head
When cutting, operate engine at over 6500 min
Extended time of low speed may wear out the clutch
prematurely.
This product is designed so that it will stop cutting when
the nylon line becomes 16 cm or longer.
WARNING
A cutting attachment can injure while it continues to
spin after the engine is stopped or power control is
released. When the unit is turned off , make sure the
cutting attachment has stopped before the unit is set
down.
Set the engine speed as low as possible and tap the Head
on the ground. (Fig. 27) Also, you can extend nylon line
with hands but the engine must be completely stopped.
(Fig. 28)
Adjust nylon line to proper length 11–14 cm before each
operation.

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. 29)
WARNING
○ The cutting attachment may be spinning during
carburetor adjustments.
○ Never start the engine without the complete clutch
cover and tube assembled! Otherwise the clutch can
come loose and cause personal injuries.
In the carburetor, fuel is mixed with air. When the engine is
test run at the factory, the carburetor is basically adjusted.
A further adjustment may be required, according to
climate and altitude. The carburetor has one adjustment
possibility:
T = Idle speed adjustment screw.
Idle speed adjustment (T)
Check that the air fi lter is clean. When the idle speed
is correct, the cutting attachment will not rotate. If
adjustment is required, close (clockwise) the T-screw,
with the engine running, until the cutting attachment starts
to rotate. Open (counter-clockwise) the screw until the
cutting attachment stops. You have reached the correct
idle speed when the engine runs smoothly in all positions
well below the speed when the cutting attachment starts
to rotate.
If the cutting attachment still rotates after idle speed
adjustment, contact your Tanaka dealer.
NOTE
Standard Idle speed is 2200–2800 min
WARNING
When the engine is idling the cutting attachment must
under no circumstances rotate.
Air fi lter (Fig. 30)
The air fi lter 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.
12
Cleaning the air fi lter
. Remove the air fi lter cover and the fi lter (19). Rinse it
-1
in warm soap suds. 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. 31)
Drain all fuel from fuel tank and pull fuel fi lter line from
tank. Pull fi lter element out of holder assembly and rinse
element in warm water with detergent.
Rinse thoroughly until all traces of detergent are
eliminated. Squeeze, do not wring, away excess water and
allow element to air dry.
NOTE
Spark plug (Fig. 32)
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.
Muffl er (Fig. 33)
Remove the muffl er and clean out any excess carbon
from the exhaust port or muffl er inlet every 100 hours of
operation.
Cylinder (Engine cooling) (Fig. 34)
The engine is air cooled, and air must circulate freely
around engine and over cooling fi ns on cylinder head to
prevent overheating.
Every 100 operating hours, or once a year (more often if
conditions require), clean fi ns and external surfaces of
engine of dust, dirt and oil deposits which can contribute
to improper cooling.
NOTE
Angle transmission (Fig. 35)
Check angle transmission or angle gear for grease level
about every 50 hours of operation by removing the grease
.
-1
fi ller plug on the side of angle transmission.
If no grease can be seen on the fl anks of the gears, fi ll
the transmission with quality lithium based multipurpose
grease up to 3/4. Do not completely fi ll the transmission.
Blade
WARNING
○ Use a sharp blade. A dull blade is more likely to snag
○ When replacing blade, purchase one recommended
○ When installing a saw blade, always face the stamped
If element is hard due to excessive dirt buildup,
replace it.
Do not operate engine with engine shroud or muffl er
guard removed as this will cause overheating and
engine damage.
Wear protective gloves when handling or performing
maintenance on the blade. (Fig. 36)
and thrust. Replace the fastening nut if it is damaged
and hard to tighten.
by Tanaka, with a 25.4 mm (one inch) fi tting hole.
side up. In the case of a 3 tooth blade, it can be used
on either side.