Shindaiwa M242 Operator's Manual download pdf (Page 14)

Troubleshooting Guide (Continued)

ADDITIONAL PROBLEMS

Poor

acceleration.

Clogged air cleaner.

Clogged fuel ﬁlter.

Lean fuel/air mixture.

Idle speed set too low.

Clean the air cleaner element.

Replace the fuel ﬁlter.

Consult with an authorized servicing dealer.

Adjust: 3,000 (±250) rpm (min

-1

)

Symptom Possible Cause Remedy

Engine stops

abruptly.

Switch turned off.

Fuel tank empty.

Clogged fuel ﬁlter.

Water in the fuel.

Shorted spark plug or loose terminal.

Ignition failure.

Piston seizure.

Reset the switch and re-start.

Refuel.

Replace ﬁlter.

Reﬁll with fresh, clean unleaded gasoline with

a pump octane of 87 or higher mixed with a 2-cycle

air cooled mixing oil that meets or exceeds ISO-L-EGD

and/or JASO FC classiﬁed oils at 50:1 gasoline/oil ratio.

Tighten or replace the plug with a BPMR6A or

equivalent resistor type spark plug of the correct heat

range. Set spark plug electrode gap to 0.024-0.028 inch

(0.6-0.7 mm). For Electromagnetic compliance (EMC)

use NGK BPMR6A. Restart.

Replace the ignition unit.

Consult with an authorized servicing dealer.

Engine difﬁcult

to shut off.

Ground (stop) wire is disconnected

or switch is defective.

Overheating due to incorrect

spark plug.

Overheated engine.

Test and replace as required.

Replace the plug with a BPMR6A or equivalent resistor

type spark plug of the correct heat range. Set spark plug

electrode gap to 0.024-0.028 inch (0.6-0.7 mm). For

Electromagnetic compliance (EMC) use NGK BPMR6A.

Restart.

Idle engine until cool.

Refer to page 13 (overheated engine).

Cutting

attachment

rotates at

engine idle.

Engine idle too high.

Broken clutch spring or worn clutch

spring boss.

Loose attachment holder.

Set idle: 3,000 (±250) rpm (min

-1

)

Replace spring/shoes as required, check idle speed.

Inspect and re-tighten holders securely.

ADDITIONAL PROBLEMS

Symptom Possible Cause Remedy

Excessive

vibration.

Warped or damaged attachment.

Loose gearcase.

Bent main shaft/worn or damaged

bushings.

Inspect and replace attachment as required.

Tighten gearcase securely.

Inspect and replace as necessary.

Cutting

attachment will

not rotate.

Shaft not installed in powerhead or

gearcase.

Broken shaft.

Damaged gearcase.

Inspect and reinstall as required.

Consult with an authorized servicing dealer.

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Shindaiwa M242 Operator's Manual Page 14

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