TRIMMER/ BRUSHCUTTER SRM-3800 TYPE1-E
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898696-43132 |
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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 power, ensures comfortable operation.
This manual provides the information necessary for assembly, adjustment, operation and maintenance of your unit.
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CONTENTS |
RULES FOR SAFE OPERATION |
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NOMENCLATURE OF PARTS ..................................................................................................................... |
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TECHNICAL DATA ...................................................................................................................................... |
3 |
ASSEMBLING ............................................................................................................................................ |
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OPERATION ............................................................................................................................................... |
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MAINTENANCE AND CARE ....................................................................................................................... |
16 |
TROUBLE SHOOTING ............................................................................................................................... |
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LONG TERM STORAGE ............................................................................................................................. |
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- 1 -
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. 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 approved container.
ATTENTION
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 your ECHO dealer.
WARNING 
DANGER
SERIOUS INJURY MAY RESULT FROM THE IMPROPER USE OF STEEL BLADES. COMPLY WITH ALL SAFETY INSTRUCTIONS LISTED INTHE 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 8TOOTH 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 BEENTESTED AND APPROVED BY ECHO FOR USE WITH THIS UNIT.
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NOMENCLATURE OF PARTS
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Top guard |
Gear housing |
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Drive shaft assembly |
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Spark plug |
Muffler |
Ignition switch |
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Throttle trigger |
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Shield |
Choke knob |
Grip |
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Air cleaner
Fuel tank
cover
Starter handle
Shoulder harness
TECHNICAL DATA
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SRM-3800 TYPE1-E |
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Dimension |
L × W × H |
cm (inch) |
181.5 × 72 × 46 (71.5 × 28.4 × 18.1) |
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Masses |
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kg (lbs) |
8.0 (17.6): without shoulder harness and cutter head |
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Engine |
Type |
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Air cooled two stroke single cylinder |
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Displacement |
mL (cu.inch) |
37.4 (2.28) |
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Max revolution |
r/min |
10,000 |
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Carburetor |
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Walbro diaphragm type WT |
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Ignition |
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Flywheel magneto : CDI (Capacitor Discharge Ignition) |
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system |
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Spark plug |
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NGK BPM7A or CHAMPION CJ-7Y |
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Starter |
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Recoil starter |
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Clutch |
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Automatic centrifugal clutch |
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Fuel |
Mixing ratio |
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Mixture of gasoline (Unleaded, 89 octane minimum) and |
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specially blended 50 : 1 ECHO two cycle engine oil. |
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Tank capacity |
L (FL.OZ.US) |
0.95 (32.2) |
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Drive shaft |
Cutter (Option) |
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Nylon line cutter head |
assembly |
Cutter |
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Circular saw, 25 cm (10 inch) |
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Cutter (Option) |
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8 cutter blade, 20 cm (8 inch) |
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Gear housing |
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60 degree bevel gears, ratio 1 : 1.33 (Counter- |
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clockwise) |
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Lubrication |
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Shell Delpena or good quality lithium grease |
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Drive shaft |
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High tensile solid steel, 5 bearings |
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Shield |
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Metal shield mounted on the gear housing for nylon line |
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and metal blade applications. |
Technical data subject to change without notice.
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ASSEMBLING
Bolts
1. |
Right hand grip assembly |
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2. |
Slot |
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3. |
Right hand U-handle |
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2
3
1
1. |
Grip assembling bolt |
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1. |
Handle assembling bolt (8 mm) |
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2. |
Bolt retainer tube |
1 |
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2 |
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1. Handle assembling |
2 |
1 |
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bracket (upper) |
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2.Handle assembling 3 bolt (8 mm)
3.Left handle
4.Handle assembling
bracket (lower) |
4 |
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5. To engine |
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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.
WARNING 
DANGER
NEVER START ENGINE WITHOUT DRIVESHAFT ASSEMBLY INSTALLED.
THIS COULD RESULT IN SERIOUS INJURY.
HANDLE
Insert right hand grip assembly into right hand U- handle 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).
Install handle assembling bracket (upper) in handle assembling bracket (lower) and fix handle by tightening handle assembling bolt (8 mm) lightly.
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1.Right handle assembling bolt
2.Right handle assembling bracket
3. |
Right hand U-handle |
1 |
4. |
To engine |
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2 |
3
4
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2
3
4
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
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1. Wire fixing clip |
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2. Throttle wire |
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1 |
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2 |
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1. |
Right hand |
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U-handle |
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2. |
Wire fixing clip |
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3. |
Shaft tube |
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4. |
Throttle wire |
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4 |
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Loosen 4 right handle assembling bolts and insert right hand U-handle into right handle assembling bracket. (toward direction of arrow
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Fix the right hand U-handle by tightening 4 right handle assembling bolts lightly.
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.
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Nut (B) |
Nut (A) |
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Swivel |
Stop lead
Ground
lead
4 |
6 |
2 |
1 |
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7 |
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3
5
Shoulder strap assembly
Quick release latch
Waist pad
THROTTLE CABLE
The engine is delivered with throttle cable (engine side) separated, assemble the cable to carburetor as follows.
∙Remove the cover.
∙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 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.
OPERATION
Oil |
1 |
Gasoline |
50 |
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OIL : ECHO brand premium two-stroke 50:1 oil is reguirred.
Mix oil and gasoline /gasohol according to insturctions on the oil container label.
MIXING : Follow directions on the oil container.
R+M ) gasoline or 2
gasohol known to be good quality.Gasohol may contain maximum 10% ethyl (grain) alcohol or 15% MTBE (methyl tertiary-butyl ether).Gasohol containing methyl (wood) alcohol is not approved.
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