Echo SRM-510ES, SRM-510ES(L), SRM-510ES(U) Service Manual
10-52F-01
SRM-510ES
SERVICE DATA
TRIMMER/BRUSHCUTTER
SRM-510ES
1
1
(Serial number : 36000001 and after)
INTRODUCTION
We are constantly working on technical im-
provement 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
product 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.
CONTENTS
1 SERVICE INFORMATION
1-1 Specifi cation ............................................... 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 CARBURETTOR ADJUSTMENT PROCEDURE
2-1 General adjusting rules ............................... 7
2-2 Presetting Idle adjust screw, Idle mixture
needle and Hi speed mixture needle
2-3 Adjusting carburettor................................... 8
.............................. 2
.................... 7
page
.. 7
Reference No.
REVISED: 201002
10-52F-01
ISSUED: 200906
2
SERVICE INFORMATION SRM-510ES
1 SERVICE INFORMATION
1-1 Specifi cations
Model
SRM-510ES (L) SRM-510ES (U)
Dimensions* Length mm(in) 1860 (73.2)
Width mm(in) 355 (14.0) 655 (25.8)
Height mm(in) 324 (12.8) 460 (18.1)
Dry weight* kg(lb) 8.5 (18.7) 8.8 (19.3)
Engine Type KIORITZ, air-cooled, two-stroke, single cylinder
Rotation Anticlockwise as viewed from the output end
Displacement cm
3
(in3) 51.7 (3.155)
Bore mm(in) 44.0 (1.732)
Stroke mm(in) 34.0 (1.339)
Compression ratio 5.8
Carburettor Type Rotary type : Diaphragm, horizontal-draught, with primer
Model Walbro WYK-341
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 CDI (Capacitor discharge ignition) system
Digital magneto
Spark plug RCJ-6Y, BPRM7A
Starter Type ES (effortless-start)
Rope diameter x length mm(in) 3.8 x 1150 (0.15 x 45.3)
Fuel Type Premixed two-stroke fuel
Mixture ratio
50 : 1 (2 %)
Petrol Minimum 89 octane petrol (RON)
Two-stroke air cooled engine oil ISO-L-EGD (ISO/CD13738), JASO FC/FD
Tank capacity L (U.S.fl .oz.) 1.0 (33.8)
Clutch Type Centrifugal, 2 - shoe pivot
Handle Type
Front : Crescent loop with cushion grip
Rear : Integrated control grip with cushion
U-handle
with integratedcontrol grip
Drive shaft Type Solid, hollow type with serration (10-tooth)
Inner shaft: Diameter - Length mm(in)
8 - 1588 (0.31 - 62.5)
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 or ECHO XTended Protection
TM
Lubricant
Cutter Type Nylon line cutter 3-tooth blade (255mm)
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 standard cutter.
†
Primer is on cleaner case.
SERVICE INFORMATIONSRM-510ES
1-2 Technical data
Model
SRM-510ES (L) SRM-510ES (U)
Engine
Idling speed r/min 2,750 +/- 250
Operating speed r/min 8,000
Wide open throttle speed r/min 9,500 - 11,000*
Clutch engagement speed r/min 3,500
Service limit speed† r/min 3,300
Compression pressure MPa (kgf/cm2) (psi) 0.83 (8.5) (121)
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 kΩ 2.0 - 2.8
Pole shoe air gaps mm(in) 0.30 - 0.40 (0.012 - 0.016)
Ignition timing at 1,000 r/min °BTDC 22
at 3,000 r/min °BTDC 15
at 8,000 r/min °BTDC 25
at 10,000 r/min °BTDC 25
PET-9000 Parameter #1 328
#2 05
Carburettor
Idle adjust screw initial setting turns in** 1 1/2
Idle mixture needle initial setting turns in*** 13
Hi speed mixture needle initial setting turns out
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
Air cleaner system
type Inner vent
Air fi lter Pleats
3 3/4
1
11,000 - 11,700*
3
2
BTDC: Before top dead centre.
*1 With Nylon line cutter and shield.*2 With 3-tooth blade (255 mm).
** Set idle adjust 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).
†
If clutch engagement speed is lower than service limit speed, replace clutch assembly with new one.
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