Shindaiwa 81646 manual Starting the Engine, Stopping the Engine, Adjusting Engine Idle

Starting the Engine (continued)

WARNING!

The cutting attachment may rotate when the engine is started!

5.When the engine starts, slowly move the choke lever to the "OPEN" posi- tion. See Figure 0. (If the engine stops after the initial start, close the choke and restart.)

Open

WARNING!

Never start the engine from the operating position.

IMPORTANT!

If the engine fails to start after several attempts with the choke in the closed position, the engine may be flooded with fuel. If flooding is suspected, move the choke lever to the open posi- tion and repeatedly pull the recoil starter to remove excess fuel and start the engine. If the engine still fails to start, refer to the troubleshooting section of this manual.

When the Engine Starts

nAfter the engine starts, allow the engine to warm up at idle  or 3 minutes before operating the unit.

nAfter the engine is warm, pick up the unit and clip on the shoulder strap if so equipped. See page 11.

nAdvancing the throttle makes the cut- ting attachment turn faster; releasing the throttle permits the attachment to stop turning. If the cutting attachment continues to rotate when the engine returns to idle, carburetor idle speed should be adjusted (see "Adjusting Engine Idle" below).

26121

Figure 20

Stopping the Engine

OFF

26122

Figure 21

Idle the engine briefly before stopping (about  minutes), then slide the ignition switch to the “O” (Engine OFF) position.

Adjusting Engine Idle

Idle Adjusting

Screw

26123

Figure 22

10

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.

Idle Speed Adjustment

1.Place the trimmer on the ground, then start the engine, and allow it to idle -3 minutes until warm.

WARNING!

The cutting attachment must NEVER rotate at engine

idle! If the idle speed cannot be adjusted by the procedure described here, return the trimmer to your Shindaiwa dealer for inspection.

. If the attachment rotates when the engine is at idle, reduce the idle speed by turning the idle adjustment screw counter-clockwise.

See Figure .

3.If a tachometer is available, the engine idle speed should be final adjusted to ,750 (±50) rpm (min-1).

4.Carburetor fuel mixture adjustments are preset at factory and cannot be serviced in the field.