Senix GTS4QL-M2 Manuel D'instructions page 16

ADJUSTING THE IDLE SPEED
WARNING:
The cutting head will move when adjusting the idle
speed. Wear all protective clothing and keep all
bystanders, children, and pets at least 50 ft. away. Make
adjustments with the unit supported by hand so that the
cutting head does not contact the ground or any object.
Keep all parts of your body away from the cutting head
and muffler. Failure to follow these instructions could
result in serious personal injury.
If the engine will not idle properly:
1. Start the engine. Refer to Starting and Stopping.
2. Release the throttle control and let the engine idle.
• If the engine stops, increase the idle speed. Use a
small Phillips screwdriver to turn the idle speed screw
clockwise, 1/8 of a turn at a time, until the engine
idles smoothly (Fig. 24).
• If the cutting head spins when the engine idles,
reduce the idle speed. Turn the idle speed screw
counterclockwise, 1/8 of a turn at a time, until the
cutting head stops moving (Fig. 24).
Idle Speed Screw
WARNING:
The cutting attachment should never turn at idle. Turn
the idle speed screw counterclockwise to reduce the
idle RPM and stop the cutting attachment, or contact
customer support for adjustment and discontinue use
until the repair is made. Serious personal injury could
result from the cutting attachment turning at idle.
MAINTAINING THE SPARK PLUG
1. Stop the engine and allow it to cool. Grasp the spark
plug boot firmly and pull it from the spark plug.
2. Clean around the spark plug. Remove the spark plug
from the cylinder head with a 5/8-inch socket, turning
counterclockwise.
NOTE: A 5/8-inch spark plug wrench is supplied with
this trimmer.
CAUTION:
Do not remove the spark plug when the engine is hot.
CAUTION:
Do not sand blast, scrape or clean spark plug
electrodes. Grit in the engine could damage the
cylinder.
16
Primer Bulb
Fig. 24
3. Inspect the spark plug. If the spark plug is cracked,
fouled or dirty, replace it with replacement part
#AM5RC or an equivalent spark plug.
4. Use a feeler gauge to set the air gap at 0.6 mm - 0.8
mm (0.025 in. - 0.31 in.) (Fig. 25).
5. Install the spark plug in the cylinder head. Tighten the
spark plug with a 5/8-inch socket, turning it clockwise
until snug.
NOTE: If using a torque wrench, torque to 18 N•m (159
in.•lb.). Do not over tighten.
6. Reattach the spark plug boot.
0.60 mm - 0.80 mm
(0.025 in. - 0.31 in.)
Fig. 25
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