Stihl FS 38 User Manual

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STIHL FS 38
WARNING
Read and follow all safety
precautions in Instruction Manual –
improper use can cause serious or
fatal injury.
ADVERTENCIA
Lea y siga todas las precauciones
de seguridad dadas en el manual
de instrucciones – el uso incorrecto
puede causar lesiones graves o
mortales.
Instruction Manual
Manual de instrucciones

Stihl FS 38 Specifications

General

Type	String trimmer
Cordless	Yes
Head type	Nylon line
Handle type	D-loop handle
Engine power	0.9 hp
Product color	Black, Metallic, Orange
Uncertainty K	2 m/s²
Rotational speed	8700 RPM
Number of strokes	2
Sound power level	109 dB
Fuel tank capacity	0.33 L
Vibration emission	5.7 m/s²
Engine displacement	27.2 cm³
Sound pressure level	94 dB
Cutting diameter (max)	- mm
Power source	Gasoline

Weight and Dimensions

Length	1470 mm
Weight	4200 g

Summary

Guide to Using this Manual

Safety Precautions and Working Techniques

Detailed safety guidelines and operational advice for safe trimmer use.

Proper Clothing

Recommended attire for operator safety and protection during operation.

THE POWER TOOL

Fuel

Information about the correct fuel mixture for the engine.

Fueling Instructions

Before Starting

Starting

Important Adjustments

Critical adjustments for optimal performance and safety.

During Operation

Holding and Controlling the Power Tool

Proper grip and control techniques for safe operation.

Working Conditions

Environmental and situational factors to consider for safe operation.

Operating Instructions

Using the Cutting Attachments

Using the Mowing Heads

MAINTENANCE, REPAIR AND STORING

Approved Combinations of Cutting Attachment, Deflector, Handle and Harness

Mounting the Loop Handle

Mounting the Deflector

Mounting the Cutting Attachment

Adjusting nylon line

Replacing Nylon Line / Polymer Blades

Fuel

Fueling

When the engine begins to fire:

As soon as the engine runs

Shut off the engine.

If the engine does not start

Operating Instructions

During break-in period

Guidelines for the initial break-in period of the new machine.

During Operation

Best practices for operating the trimmer after the break-in period.

Cleaning the Air Filter

Adjusting the Carburetor

Adjusting Idle Speed

How to set the idle speed for proper operation.

Engine stops while idling

Troubleshooting steps for engine stalling at idle.

Cutting attachment rotates when engine is idling

Erratic idling behavior, poor acceleration

Idle setting is too lean

Adjusting carburetor for lean idle conditions.

Erratic idling behavior

Addressing inconsistent idling.

Idle setting is too rich

Spark Plug

Checking the Spark Plug

Replacing Nylon Line

Winding line onto spool

Inspections and Maintenance by Dealer

Maintenance and Care

Specifications

Maintenance and Repairs