Assembly Procedures - Tanaka SF-HT Handling Instructions Manual

○ Spectator and fellow workers must be warned, and
children and animals prevented from coming nearer than
15 m (50 ft) while the pole trimmer is in use. (Fig. 2)
○ Avoid all power lines. This unit is not insulated against
electrical current.
○ Always wear head protection with full face shield to help
protect against falling branches and debris. (Fig. 2)
○ Gloves should be used when sharpening chain.
○ Always wear heavy, long pants, boots and gloves.
Do not wear loose clothing, jewelry, short pants, sandals
or go barefoot.
Secure hair so it is above shoulder length.
○ Wear hearing protection. Pay attention to your
surroundings.
Be aware of any bystanders who may be signaling a
problem.
○ Use anti-slip and sturdy footwear.
○ Before pruning, attach the harness to suspension eyelet
and hang from the shoulder.
Adjust the harness to be easy to use.
Always wear the harness during operation.
○ Pull emergency release fl ap in the event of emergency.
○ National regulation can restrict the use of machine.
○ Keep from footing and balance. Do not over-reach.
○ When operation is prolonged, take a break periodically
so that you may avoid possible Hand-Arm Vibration
Syndrome (HAVS) which is caused by vibration.
○ Press the quick release button or pull emergency release
fl ap (If so equipped) in the event of emergency. (Fig. 3)
WARNING
○ Antivibration systems do not guarantee that you will not
sustain Hand-Arm Vibration Syndrome or carpal tunnel
syndrome.
Therefore, continual end regular users should monitor
closely the condition of their hands and fi ngers. If any
of the above symptoms appear, seek medical advice
immediately.
○ Long or continuous exposure to high noise levels may
cause permanent hearing impairment. Always wear
approved hearing protection when operating a machine.
Failure to do so could result in a high risk of personal
accidents or injury.
Unit/machine safety
WARNING
○ Never modify the unit/machine in any way. Do not use
your unit/machine for any job except that for which it is
intended.
○ Using guide bar/chain other than recommended by the
manufacturer which are not approved, could result in a
high risk of personal accidents or injury.
Transport and storage
○ Clean and maintain the unit carefully and store it in a dry
place.
○ When transporting or storage, cover chain with chain
cover.

ASSEMBLY PROCEDURES

Installation of attachment (Fig. 4)
1. Remove attachment from your brush cutter.
2. Join the attachment in place of it.
3. Make sure the locking bolt (1) fi ts in the location hole (2)
of tube and that the tube will not come off .
4. Tighten the clamp bolt (3) securely.
WARNING
Never try to start engine without side case securely
fastened.
Installation of bar and chain
1. Remove chain bar clamp nut (4). (Fig. 5)
2. Remove the side case (5). (Fig. 5)
3. Install, the chain bar (6) onto the bolt (7), then push it
toward the sprocket (8) as far as it will go. Make sure that
the boss of chain tension adjusting bolt (9) fi ts into the
hole of the bar (10). (Fig. 6)
NOTE
Slightly move the bar back and forth and make sure the
chain tension boss (9) fi ts into the hole (10) in the bar
properly.
4. Confi rm the direction of saw chain (11) is correct as in
the fi gure, and align the chain on the sprocket. (Fig. 7)
5. Guide the chain drive links into the bar groove all around
the bar.
6. Install the side case (5) onto the guide bar clamp bolt.
Then fi x the clamp nut (4) temporarily. (Fig. 7)
7. Raise the bar end, and tighten the chain (11) by turning
the tension adjustment bolt (12) clockwise. To check
proper tension, lightly lift up the center of chain and there
should be about 0.5 – 1.0 mm clearance between bar
and edge of drive link (13). (Fig. 8, 9)
CAUTION
PROPER TENSION IS EXTREMELY IMPORTANT!
(Fig. 8, 9)
8. Raise the bar end and securely tighten the chain bar
clamp nut with the box wrench. (Fig. 8)
9. A new chain will stretch so adjust the chain after a few
cuts and watch chain tension carefully for the fi rst half
hour of cutting.
NOTE
Check the chain tension frequently for optimum
performance and durability.
CAUTION
○ When the chain is excessively tightened, the bar and
chain will be damaged rapidly. Conversely, when the
chain is excessively loosened, it may get out of the
groove in the bar.
○ Always wear gloves when touching the chain.
WARNING
During operation, hold the unit fi rmly with both hands. A
single hand operation may cause serious injury.
Chain oil (Fig. 10)
Fill up with chain oil (14). Always use good quality chain oil.
When the engine is running, the chain oil is automatically
discharged.
NOTE
Add chain oil when its level lowers to one centimeter
from bottom. (Fig. 10)
ADJUSTMENT OF CHAIN OIL SUPPLY
The chain oil quantity discharged through the lubrication
system is factory-adjusted to the standard. Adjust the
quantity in accordance with the operating condition.
The numbered label (15) describes order of chain oil
adjustment. (Fig. 11)
○ Loosen the fi xing screw (16) one turn. (Fig. 11)
○ Turn the adjusting screw (17) clockwise to decrease
the quantity and turn it counterclockwise to increase the
quantity. (Fig. 12)
○ Do not try to turn the screw (17) clockwise beyond 1 turn
from its most counterclockwise position or the maximum
quantity discharged position.
○ After adjustment has been made, tighten fi xing screw
(16). (Fig. 11)
NOTE
When you have lost the proper position of the screw (17),
start with the most counterclockwise position.
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English