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Adjusting engine idle, Long term storage – Shindaiwa AH254 User Manual

Page 18

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18

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.

IMPORTAnT!!

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.

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 move at engine idle! If

the idle speed cannot be adjusted by

the procedure described here, return

the unit to your Shindaiwa dealer for

inspection.

Idle Speed Adjustment

Place the unit on the ground, then

1.

start the engine, and then allow it to

idle 2-3 minutes until warm.
If the attachment moves when the

2.

engine is at idle, reduce the idle

speed by turning the idle adjustment

screw counter-clockwise.
If a tachometer is available, adjust

3.

idle. Check Specifications page for

correct idle speed

nOTE

Carburetor fuel mixture adjustments

are preset at factory and cannot be

serviced in the field.

Long Term Storage

Whenever the unit will not be used for 30

days or longer, use the following proce-

dures to prepare it for storage:

Clean external parts thoroughly and

apply a light coating of oil to all metal

surfaces.
Drain all the fuel from the carburetor

and the fuel tank.

To do so:

Prime the primer bulb until no more

1.

fuel is passing through.
Start and run the engine until it stops

2.

running.
Repeat steps 1 and 2 until the engine

3.

will no longer start.

Remove the spark plug and pour

about 1/4 oz. of engine oil into the

cylinder through the spark plug hole.

Slowly pull the recoil starter 2 or 3

times so oil will evenly coat the inte-

rior of the engine. Reinstall the spark

plug.
Before storing the unit, repair or

replace any worn or damaged parts.
Remove the air cleaner element from

the carburetor and clean it thor-

oughly with soap and water. Let dry

and reassemble the element.
Store the unit in a clean, dust-free

area.

CAUTIOn!

Gasoline stored in the carbure-

tor for extended periods can cause

hard starting, and could also lead to

increased service and maintenance

costs.

IMPORTAnT!

All stored fuels should be stabilized with

a fuel stabilizer such as STA-BIL™.

nOTE

Damage resulting from stale or con-

taminated fuel is not covered by the

Shindaiwa warranty policy.

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.

Idle

Ajust-

ment

Screw

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