Echo SRM-400U User Manual

OPERATOR’S MANUAL

TRIMMER/

BRUSHCUTTER

SRM-400U

WARNING DANGER

READ INSTRUCTIONS CAREFULLY AND FOLLOW RULES FOR
SAFE OPERATION.
FAILURE TO DO SO COULD RESULT IN SERIOUS INJURY.

ECHO, INCORPORATED

400 Oakwood Road, Lake Zurich, Illinois 60047-1564
Phone : [phone]

X750-005 26 2
X750216-1602

Printed in Japan 0504rd 0419 ES

INTRODUCTION

The ECHO Trimmer/Brushcutter, model SRM-400U
is lightweight, high performance gasoline powered
rotary trimmer which is designed for brushcutting,
weed control and grass trimming in areas which are
difficult to control by any other means. The trimmer
is equipped with a safety shoulder harness, and the
excellent balance characteristics plus the available
power, ensures comfortable operation.

This manual provides the information necessary for
assembly, adjustment, operation and maintenance
of your unit.

WARNING

The engine exhaust from this

product contains chemicals known

to the State of California to cause

cancer, birth defects or other

reproductive harm.

Locate this safety decal on your unit. The complete unit illustration found in the “NOMENCLATURE”
section, will help you locate them. Make sure the decal is legible and that you understand and follow
the instructions on them. If a decal cannot be read, a new one can be ordered from your ECHO dealer.

Safety decal: Part number 890160-54130

Safety decal: Part number 890228-09560

Safety decal: Part number 890177-51330

CONTENTS

RULES FOR SAFE OPERATION .......................................................................................................... 3

NOMENCLATURE HAVE PARTS .......................................................................................................... 4

TECHNICAL DATA................................................................................................................................. 4

ASSEMBLING ....................................................................................................................................... 5

OPERATION.......................................................................................................................................... 7

MAINTENANCE AND CARE ................................................................................................................. 16

TROUBLE SHOOTING.......................................................................................................................... 18

LONG TERM STORAGE ....................................................................................................................... 20

Copyright © 2002 All Rights Reserved.

2

RULES FOR SAFE OPERATION

SAFETY INSTRUCTIONS

1. Do Not operate the unit when you are
fatigued.

2. Do Not operate if other people or animals
are in the work area.

3. Do Not operate the unit without the shield
correctly in position.

4. Do Not operate in a confined area. Carbon
monoxide exhaust gas is highly poisonous.

5. Do Not operate the unit while you are
smoking.

6. Always wear eye protection goggles when
operating the unit.

7. Always hold the unit firmly with both hands
and with fingers and thumbs encircling the
handles.

8. Always obey local ordinances regulating the
use of internal combustion engines in your
area.

9. Always use the cutting attachments as
approved and supplied by ECHO Inc. for
your unit.

10. Always remain alert when operating the unit
to avoid possible injury to yourself and other
people.

11. Always wear the shoulder harness when
operating the unit.

12. Do not operate the unit while under the
influences of drugs or alcohol.

WARNING DANGER

1. Do Not smoke while handling gasoline.

2. Do Not refuel a hot engine. Wait unit it cools.

3. Do Not overfill the tank. Spilled fuel must be
wiped up.

4. Always stop the engine when refueling.

5. Always remove the fuel cap slowly in order
to relieve any pressure build up in the tank.

6. Always restart the engine at least 3 m
(10 feet) away from the refueling point.

7. Always store gasoline in an approved
container.

ATTENTION

For your protection when operating this unit,
comply with all Safety Rules as listed in the
Operator’s Manual. (Replacement manuals are
available from your ECHO dealer.)

1. Do not operate unless the debris shield and
safety harness are in good condition and
properly installed.

2. Do not operate if other persons or animals are
in the work area.

3. Do not operate without eye protection goggles
available from your ECHO dealer.

WARNING DANGER

SERIOUS INJURY MAY RESULT FROM THE
IMPROPER USE OF STEEL BLADES.
COMPLY WITH ALL SAFETY INSTRUCTIONS
LISTED IN THE OPERATOR’S MANUAL AND
SUPPLIED WITH THE BLADES.

1. THE ECHO SAW TOOTH BLADE IS
DESIGNED TO CUT BRUSH AND SMALL
TREES.

2. THE ECHO 8 TOOTH ROTARY KNIFE
BLADE IS DESIGNED TO CUT HEAVY
WEEDS AND GRASS. TO AVOID INJURY
DUE TO KICK BACK OR BLADE
FRACTURE, DO NOT USE THIS BLADE TO
CUT BRUSH OR TREES.

3. ECHO INC. WILL NOT BE RESPONSIBLE
FOR THE FAILURE OF CUTTING DEVICES
WHICH HAVE NOT BEEN TESTED AND
APPROVED BY ECHO FOR USE WITH
THIS UNIT.

3

Gear housing

Shield

Grip

Shoulder harness

NOMENCLATURE HAVE PARTS

Part number 890177-51330

Part number 890228-09560

Part number 890160-54130

Throttle trigger

Ignition switch

Drive shaft assembly

Decompression device

Spark plug

Choke lever

Air cleaner cover

Fuel tank

Muffler

Starter handle

TECHNICAL D ATA

SRM-400U
Dimension L × W × H cm 186 × 70 × 43 (73.2 in × 27.6 in × 16.9 in)
Mass kg 9.9 (21.8 lb): without shoulder harness and cutter head
Engine Type Air cooled two stroke single cylinder

Displacement mL (cm³) 42.7 (2.6 cu in)
Maximum
revolution r/min 10,000
Carburetor Walbro diaphragm type WYK
Ignition Flywheel magneto : CDI (Capacitor Discharge Ignition)

system
Spark plug CHAMPION CJ-6Y
Starter Recoil starter
Clutch Automatic centrifugal clutch

Fuel Mixing ratio Mixture of gasoline (Unleaded, 89 octane minimum) and

specially blended 50 : 1 ECHO two cycle engine oil.
Tank capacity L 1.0 (33.8 US fl oz)

Drive shaft Cutter (Option) Nylon line cutter head
assembly Cutter Circular saw, 25 cm (10 in)

Cutter (Option) 8 cutter blade, 20 cm (8 in)
Gear housing 60 degree bevel gears, ratio 1 : 1.33 (Counterclockwise)
Lubrication Good quality lithium grease
Drive shaft High tensile solid steel, 5 bearings
Shield Metal shield mounted on the gear housing for nylon line

and metal blade applications.

Technical data subject to change without notice.

4

Slot

ASSEMBLING

Bolts

Right hand grip assembly

Right hand U-handle

DRIVE SHAFT

•Stand engine upright on a level floor.

•Loosen bolts at drive shaft end of the engine.

•Fit drive shaft assembly ensuring that the drive

shaft is correctly engaged.

•Tighten bolts to fasten drive shaft assembly.

WARNING DANGER

NEVER START ENGINE WITHOUT
DRIVESHAFT ASSEMBLY INSTALLED.
THIS COULD RESULT IN SERIOUS INJURY.

HANDLE

Insert right hand grip assembly into right hand U­handle and fit it to the slot for rotation prevention of
right hand U-handle.

Grip assembling bolt

Handle assembling bolt (8 mm)

Bolt retainer tube

Handle assembling bracket (upper)

Handle assembling bolt (8 mm)

Left handle

Fit grip assembling bolt and secure the grip firmly.

Remove bolt retainer tube from end of handle
assembling bolt (8 mm).

Install handle assembling bracket (upper) in handle
assembling bracket (lower) and fix handle by
tightening handle assembling bolt (8 mm) lightly.

Handle assembling bracket (lower)

To engine

5

Right handle assembling bolt

Right handle assembling bracket

Right hand U-handle

Loosen 4 right handle assembling bolts and insert
right hand U-handle into right handle assembling
bracket. (toward direction of arrow )

Fix the right hand U-handle by tightening 4 right
handle assembling bolts lightly.

To engine

Adjustment of right handle inclination (left/right)

Adjustment of right handle inclination

(forward/ backward)

Adjustment of left handle inclination
(forward/ backward)

To engine

Adjust each inclination of right and left handles to
adequate position (easy to operate) and tighten handle
firmly assembling bolt (8 mm) and 4 right handle
assembling bolts.

Determine “Easy to operate” position.

4

Shoulder strap assembly

Waist pad

2

6

7

3

5

Quick release latch

1

SHIELD

Fit the shield on the gear housing and tighten
screws with washers (Seven points) as shown.

SHOULDER HARNESS

Fit the shoulder strap to the swivel hook, and adjust
the length of strap and or the location clamps to
maintain the cutter head parallel to the ground.

6