Carburetor Adjustment
Engine Break-In
New engines must be operated a minimum duration of two tanks of fuel
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 ECHO service dealer.
IMPORTANT!
If the engine is adjusted for operation above 1,100 feet ASL, the carburetor must be
NOTE:
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..
WARNING!
When carburetor adjustment is completed, the cutting attachment should not move at idle, otherwise serious personal injury may result.
The engine must return to idle speed whenever the throttle lever is released. Idle speed is adjustable, and must be set low enough to permit the engine clutch to disengage the cutting attachment.
Adjusting Engine Idle
The engine must return to idle speed whenever the throttle lever 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 rotate at engine idle! If the idle speed cannot be adjusted by the procedure described here, return the trim- mer to your Shindaiwa dealer for inspection.
Idle Speed Adjustment
1.Place the trimmer on the ground, then start the engine, and then allow it to idle
2.If the attachment rotates when the engine is at idle, reduce the idle speed by turning the idle adjustment screw
3.If a tachometer is available, the engine idle speed should be final adjusted to 3,000 (±250)
4.Carburetor fuel mixture adjustments are preset at factory and cannot be serviced in the field.
Idle Adjusting
Screw
Adjusting engine idle
18
