Service And Adjustments; Replacing The Line; Blade Replacement; Carburetor Adjustment - Partner B 320 B Instruction Manual

SERVICE AND ADJUSTMENTS

REPLACING THE LINE

1. Press the tabs on the side of the trimmer
head and remove cover and spool.
2. Remove any remaining line.
3. Clean dirt and debris from all parts. Re-
place spool if it is worn or damaged.
4. Replace with a pre-wound spool, or re-
place line using a 4,5 meters length of 2,4
mm diameter Partner brand line.
5. When installing new line on an existing
spool, hold the spool as shown in the il-
lustration below.
6. Bend the line at the midpoint and insert
the bend into the slot in the center rim of
the spool. Ensure line snaps into position
in the slot.
Slot
Spool
7. With your finger between the lines, wrap
the lines evenly and firmly around the
spool in a clockwise direction.
8. Position the lines in the guide slots.
Guide Slot
9. Insert the ends of the lines through exit
holes in the sides of the cover.
10. Place the spool in the cover.
Spool
Cover
Tab
Tap Button
11. Make sure the lines are not caught be-
tween the rim of the spool and the wall of
the cover.
12. Reinstall the spool and cover onto the
trimmer head. Push until cover snaps into
place.

BLADE REPLACEMENT

Refer to the ASSEMBLY section for blade re-
placement instructions and illustrations.

CARBURETOR ADJUSTMENT

WARNING:
making idle speed adjustments. The trimmer
head will be spinning during most of this pro-
cedure. Wear your protective equipment and
observe all safety precautions. After making
adjustments, the trimmer head must not
move/spin at idle speed.
The carburetor has been carefully set at the
factory. Adjustments may be necessary if you
notice any of the following conditions:
S Engine will not idle when the throttle is re-
leased.
S The trimmer head moves/spins at idle speed.
Make adjustments with the unit supported so
the cutting attachment is off the ground and
will not make contact with any object. Hold
the unit by hand while running and making ad-
justments. Keep all parts of your body away
from the cutting attachment and muffler.
Idle Speed Adjustment
Allow engine to idle. Adjust speed until engine
runs without trimmer head moving or spinning
(idle speed too fast) or engine stalling (idle
speed too slow).
S Turn idle speed screw clockwise to in-
crease engine speed if engine stalls or dies.
Guide
S Turn idle speed screw counterclockwise to
Slot
decrease engine speed if trimmer head
moves or spins at idle speed.
WARNING:
after each adjustment. The trimmer head
must not move or spin at idle speed to avoid
serious injury to the operator or others.
13
Cover
Keep others away when
Recheck the idle speed