Carburetor Adjustment - Shindaiwa T242X Owner's/Operator's Manual

Maintenance (continued)

Carburetor Adjustment

Engine Break-In
New engines must be operated a minimum duration of two tanks of fuel break-in before carburetor adjustments can be
made. During the break-in period your engine performance will increase and exhaust emissions will stabilize. Idle speed can
be adjusted as required.
High Altitude Operation
This engine has been factory adjusted to maintain satisfactory starting, emission, and durability performance up to
1,100 feet above sea level (ASL) (96.0 kPa). To maintain proper engine operation and emission compliance above
1,100 feet ASL the carburetor may need to be adjusted by an authorized Shindaiwa service dealer.
If the engine is adjusted for operation above 1,100 feet ASL, the carburetor must be re-adjusted when operating the
engine below 1,100 feet ASL, otherwise severe engine damage may result.
Every unit is run at the factory and the carburetor is set in compliance with emission regulations. Carburetor adjustments,
other than idle speed, must be performed by an authorized Shindaiwa dealer.
Adjusting Engine Idle
Figure 20
Loading Trimmer Line
1. Cut one piece of line to recommended length.
2. Align arrows on top of knob with openings in eyelets.
3. Insert one end of trimmer line into an eyelet, and push line equal
distance through trimmer head.
4. Hold trimmer head while turning knob clockwise to wind line onto
spool until about 5" (13 cm) of each line remains exposed.
Trimmer head is now fully loaded and ready for operation.
Trimmer head is pre-wound with .095" (2.4mm) Crossfire™
trimmer line.
20
The engine must return to idle speed
whenever the throttle trigger is
released. Idle speed is adjustable, and
must be set low enough to permit the
engine clutch to disengage the cutting
attachment.
WARNING!
The cutting attachment
must NEVER move at engine idle!
If the idle speed cannot be adjusted
by the procedure described here,
Idle Adjusting
return the unit to your Shindaiwa
Screw
dealer for inspection.
NOTE:
IMPORTANT!
NOTE:
1
.080 (2.0 mm) dia. - 10' (3 m)
.095 (2.4 mm) dia. - 10' (3 m)
3
Idle Speed Adjustment
1. Place the trimmer on the ground,
then start the engine, and then allow
it to idle 2-3 minutes until warm.
2. If the attachment moves when the
engine is at idle, reduce the idle
speed by turning the idle adjustment
screw counter-clockwise. See Figure
20.
3. If a tachometer is available, adjust
idle. Check Specifications page for
correct idle speed.
NOTE:
Carburetor fuel mixture adjustments
are preset at factory and cannot be
serviced in the field
2
4