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0.6 - 0.7 mm (0.024 - 0.028 in)
Gear housing
Idle speed
adjustment screw (T)
Low speed needle (L)
WARNING
CUTTING ATTACHMENT MUST NOT TURN
OR MOVE WHEN UNIT IS IDLING.
CAUTION
When starting, idling adjustment speed
should be adjusted not to rotate the cutting
attachment.
Correct idle speed is adjusted 2,400 to
2,800 r/min. Or 1/4 turn counterclockwise
from the point the cutting attachment stops
moving.
When there is some trouble with the
carburetor, refer to your distributor or dealer.
Bolt
High speed needle (H)
DANGER
SPARK PLUG
• Check periodically.
• Standard spark plug gap is 0.6 to 0.7 mm
(0.024 to 0.028 in).
• Replace if either electrode is worn or if the
insulator is fouled by oil or other deposits.
• TORQUE = 15 to 17 N
NOTE
Do not over torque.
GEAR HOUSING
• Remove the bolt every 50 hours and check.
• Replenish as necessary, but do not overfill.
- Good quality lithium multi grease is
recommendable.
CARBURETOR ADJUSTMENT
Every unit is run at the factory and the carburetor
is set in compliance with Emission Regulations. In
addition, the carburetor is equipped with "H" (High
Speed Needle) and "L" (Low Speed Needle)
needle adjustment limited that prevent settings
outside acceptable limits.
1. Before adjusting carburetor clean or replace air
filter.
2. Make sure the cutting attachments such as
hedge clipper blades or circular saw are
properly adjusted.
3. Start engine and run several minutes to bring to
operating temperature. Flash choke twice during
warm-up to clear any air from the fuel system.
4. Stop engine.
Turn "H" speed needle counterclockwise (CCW)
to stop.
Turn "L" speed needle midway between full
clockwise (CW) stop and CCW stop.
5. Idle Speed Adjustment:
• Start engine, turn "Idle" speed adjustment
screw CW until the cutting attachment begins
to turn, then turn screw out CCW until the
cutting attachment stops turning.
Turn screw out, CCW, an additional 1/4 turn.
6. Accelerate to full throttle for 2 - 3 seconds to
clear any excess fuel in the engine, then return
to idle.
Accelerate engine to full throttle to check for
smooth transition from idle to high speed.
If engine hesitates turn "L" needle CCW 1/8 turn
and repeat acceleration.
Continue adjustment until smooth acceleration
results.
7. Check idle speed and reset if necessary as
described in item 5. If a tachometer is available
idle speed should be set between 2,400 to
2,800 r/min.
11
•
•
m (130 to 145 in
lb)
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