Echo SRM-5000, SRM-5000L, SRM-5000U Service Data

SRM-500010-52D-02

1

1

lNTRODUCTION

We are constantly working on technical
improvement of our products. For this reason,
technical data, equipment and design are
subject to change without notice. All
specifications, illustrations and directions in
this SERVICE DATA are based on the latest
products information available at the time of
publication.
ECHO SERVICE MANUAL Ord. 402-25
(Model : SRM-4000, RM-4000) contains lots
of information for servicing this model.

NOTE : SRM-5000 serial number 36000001 to

36007482. Refer to Service Data 10-52C-01.

INDEX

CONTENTS

page

1 SERVICE INFORMATION .............................2

1-1 Specification ...............................................2

1-2 Technical data ............................................ 3

1-3 Torque limits ...............................................4

1-4 Special repairing materials ........................4

1-5 Service limits.............................................. 5

1-6 Special tools ...............................................6

2 EMISSION ADJUSTMENT GUIDE ...............7

2-1 General adjusting rules ..............................7

2-2 Idle adjust screw, idle mixture needle and

H mixture needle initial settings..................7

2-3 Adjusting carburettor.................................. 8

Reference No. 10-52D-02

R E V I S E D : 2 00609

ISSUED: 200510

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1 SERVICE INFORMATION
1-1 Specifications

Model SRM-5000(L) SRM-5000(U)
Dimensions Length* mm(in) 1860 (73.2) 1860 (73.2)

Width mm(in) 325 (12.8) 700 (27.6)

Height mm(in) 265 (10.4) 430 (16.9)
Dry weight** kg(lb) 8.3 (18.30) 8.7 (19.18)
Engine Type

Rotation Anticlockwise as viewed from the output end

Displacement cm3(in3) 51.7 (3.155)

Bore mm(in) 44.0 (1.732)

Stroke mm(in) 34.0 (1.339)

Compression ratio 6.9 : 1
Carburettor Type Rotary type : Diaphragm, horizontal-draught, with primer

Model Walbro WYK-22 7

Venturi size-Throttle bore mm(in) 13.5 - 15.0 (0.531 - 0.591)

Metering diaphragm pressure Lead pressure from inside of cleaner case
Ignition Type

Spark plug RCJ-6Y
Starter Type Automatic rewind

Rope diameter x length mm(in) 3.8 x 1150 (0.15 x 45.3)
Fuel Type Premixed two-stroke fuel

Mixture ra ti o 50 : 1 (2 %)
Petrol Minimum 89 octane petro l (R O N )
Two-stroke air cooled engine oil ISO-L-EGD (ISO/CD13738), JASO FC

Tank capacity L (U.S.fl.oz.) 1.0 (33.8)
Clutch Type Centrifugal, 2 - shoe pivot
Handle Type Front Crescent loop w/cushion grip U-shaped

Drive shaft Type Solid (Spline shaft)

Diameter - Length mm(in) 8 - 1590 (0.31 - 62.6)

Housing OD -ID mm(in) 28 - 24 (1.10 -0.94)
(Main pipe) Length mm(in) 1530 (60.2)

Gear case Reduction ratio 1.33

Gear tooth Spiral bevel gear

Lubrication Lithium based grease
Cutter Type Nylon line cutter, 3-tooth blade†, Others

Pilot diameter mm(in) 25.4 (1.0)

Fastener type, size mm Left-hand thread nut, M10 x 1.25 pitch

Cutting rotation Anticlockwise as viewed from top
OD: Outer diameter. ID: Inner diameter.

* Without shoulder harness and cutter head. ** With standard cutter head, without shoulder harness.

†

Install and use U-shaped handle when operating with steel blade.

††

Primer is on cleaner case.

SERVICE INFORMATION SRM-5000

KIORITZ, air-cooled, two-stroke, single cylinder

Semi-automatic decompression

CDI (Capacitor discharge ign iti on) sys tem in a single integrated

piece, with elec tronic timing advancer and speed governer

Rear Integrated control grip w/cushio n - - -

††

SERVICE INFORMATIONSRM-5000

1-2 T echnical data

Engine

Idling speed r/min 2000 - 2700
Operating speed r/min 7500 - 8500
Wide open throttle speed r/min 9700 - 10300 †1 10500 - 12000
Clutch engagement speed r/min 3400 - 3900
Compression pressure MPa (kgf/cm2) (psi) 0.93 (9.5) (135)

Ignition system

Spark plug gap mm(in) 0.6 - 0.7 (0.024 - 0.028)
Minimum secondary voltage at 1000 r/min kV 14.0
Secondary coil resistance k 2.0 - 2.8
Pole shoe air gaps mm(in) 0.30 - 0.40 (0.012 - 0.016)
Ignition timing at 1000 r/min °BTDC 28

at 3000 r/min °BTDC 35

at 7000 r/min °BTDC 40
at 10000 r/min °BTDC 33

Carburettor

Idle adjust screw initial setting turn in* 3 3/4
Idle mixture needle initial setting turn in** 13 1/2
H mixture needle initial setting turn back 4
Test Pressure, minimum MPa (kgf/cm2) (psi) 0.05 (0.5) (7.0)
Metering lever height mm(in) 1.5 (0.06) lower than diaphragm seat

3

†2

BTDC: Before top dead center.
* Set idle speed screw to the point that its tip just contacts throttle plate before initial setting.

** Screw in idle mixture needle from initial thread engagement (at the point that the clicking sound is heard).

1

†

With two line nylon line head.

2

†

With metal blade.