Echo SRM-3800 User Manual

TRIMMER/

BRUSHCUTTER

SRM-3800

TYPE1-E

WARNING DANGER

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

847

898696-43132

X750226-3801

INTRODUCTION

The ECHO Trimmer/Brushcutter, model SRM-3800 TYPE1-E 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 po wer, ensures comf ortable operation.

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

CONTENTS

RULES FOR SAFE OPERATION................................................................................................................ 2

NOMENCLA TURE OF PARTS..................................................................................................................... 3

TECHNICAL DAT A ...................................................................................................................................... 3

ASSEMBLING ............................................................................................................................................ 4

OPERA TION ............................................................................................................................................... 6

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

TROUBLE SHOOTING ............................................................................................................................... 19

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

- 1 -

RULES FOR SAFE OPERA TION

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. W ait unit it cools .

3. Do Not overfill the tank. Spiled 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 posint.

7. Always store gasoline in an approv ed container.

A TTENTION

For your protection when operating this unit, comly 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 y our ECHO dealer.

WARNING DANGER

SERIOUS INJURY MAY RESUL T FROM THE IMPROPER USE OF STEEL BLADES. COMPL Y WITH ALL SAFETY INSTR UCTIONS LISTED IN THE OPERA T OR’S MANUAL AND SUPPLIED WITH THE BLADES.

1.THE ECHO SAW T OO TH BLADE IS DESIGNED T O CUT BRUSH AND SMALL TREES.

2.THE ECHO 8 TOOTH R OT AR Y KNIFE BLADE IS DESIGNED T O CUT HEA VY WEEDS AND GRASS. TO A V OID INJURY DUE T O KICK BACK OR BLADE FRA CTURE, DO NOT USE THIS BLADE T O CUT BRUSH OR TREES.

3.ECHO INC. WILL NOT BE RESPONSIBLE FOR THE F AILURE OF CUTTING DEVICES WHICH HA VE NOT BEEN TESTED AND APPRO VED BY ECHO FOR USE WITH THIS UNIT .

- 2 -

NOMENCLA TURE OF P A RTS

Spark plug

Choke knob

Air cleaner cover

T op guard

Muffler

Fuel tank

Starter handle

TECHNICAL DATA

Gear housing

Drive shaft assembly

Ignition switch

Throttle trigger

Shield

Grip

Shoulder harness

SRM-3800 TYPE1-E Dimension L × W × H cm (inch) 181.5 × 72 × 46 (71.5 × 28.4 × 18.1) Masses kg (lbs) 8.0 (17.6): without shoulder harness and cutter head Engine T ype Air cooled two stroke single cylinder

Displacement mL (cu.inch) 37.4 (2.28) Max revolution r/min 10,000

Carburetor Walbro diaphragm type WT Ignition Flywheel magneto : CDI (Capacitor Discharge Ignition)

system Spark plug NGK BPM7A or CHAMPION CJ-7Y 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. T ank capacity L (FL.OZ.US) 0.95 (32.2)

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

Cutter (Option) 8 cutter blade, 20 cm (8 inch) Gear housing 60 degree bevel gears, ratio 1 : 1.33 (Counter-

clockwise) Lubrication Shell Delpena or 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.

- 3 -

Bolts

ASSEMBLING

DRIVE SHAFT

• Stand engine uprignt 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.

• Tignten bolts to fasten drive shaft assembly.

W ARNING D ANGER

NEVER ST ART ENGINE WITHOUT DRIVESHAFT ASSEMBL Y INST ALLED . THIS COULD RESULT IN SERIOUS INJURY .

1. Right hand grip assembly

2. Slot

3. Right hand U-handle

1. Grip assembling bolt

1. Handle assembling bolt (8 mm)

2. Bolt retainer tube

HANDLE

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

Fit grip assembling bolt and secure the grip firmly .

Remove bolt retainer tube from end of handle

assembling bolt (8 mm).

1. Handle assembling bracket (upper)

2. Handle assembling bolt (8 mm)

3. Left handle

4. Handle assembling bracket (lower)

5. To engine

Install handle assembling bracket (upper) in handle

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

- 4 -

1. Right handle assembling bolt

2. Right handle assembling bracket

3. Right hand U-handle

4. To engine 2

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.

1. Adjustment of right handle inclination (left/right)

2. Adjustment of right handle inclination (forward/ backward)

3. Adjustment of left handle inclination (forward/ backward)

4. To engine

Adjust each inclination of right and left handles to adequate position (easy to operate) and tighten firmly handle assembling bolt (8 mm) and 4 right handle assembling bolts. Determine “Easy to operate” position seeing illustration below .

To eliminate loosening of throttle wire fix it to shaft tube (2 places) and to right hand U-handle (1 place) with wire fixing clips.

1. Wire fixing clip

2. Throttle wire

1. Right hand U-handle

2. Wire fixing clip

3. Shaft tube

4. Throttle wire

- 5 -

Stop lead

Ground

Nut (B)

lead

Nut (A)

Swivel

THRO TTLE CABLE

The engine is delivered with throttle cable (engine side) separated, assemble the cable to carburetor as follows.

• Remove the cov er .

• Remove nut (A) and one washer from throttle

cable.

• Insert throttle cable througn the hole of bracket as shown.

• Replace washer and nut (A) finger tignt, and attach the inner cable to swivel on throttle lever ensuring that the nipple fits into socket provided on one side of slot.

• Tighten nut (A) to secure in this position.

• Check that throttle operates freely and returns to

idle position.

• Do not loosen nut (B) unnecessarily , since it has been located properly at the factory .

• Reinstall air filter and cover .

• Connect stop lead and ground lead by couplers .

SHIELD

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

Shoulder strap assembly

Quick release latch

Waist pad

OPERATION

Oil

Gasoline

OIL : ECHO brand premium two-stroke 50:1 oil is reguirred. Mix oil and gasoline /gasohol according to insturctions on the oil container label.

SHOULDER HARNESS

• Fit the shoulder starp to the swivel hook, and adjust the length of starp and or the locaion clamps to maintain the cutter head parallel to the ground.

GENERAL CHECK

• Eneure that all nuts, screws and bolts installed are properly tightened.

FUEL ST A TEMENT

GASOLINE : Use 89 octane ( ) gasoline or gasohol known to be good quality . Gasohol may contain

maximum 10% ethyl (grain) alcohol or 15% MTBE (methyl tertiary-butyl ether). Gasohol containing methy l (wood) alcohol is not approved.

R+M

MIXING : F ollow directions on the oil container .

- 6 -

+ 14 hidden pages