Echo SRM-265ES Series Instrucciones de montaje

SRM-265ES10-25L-011

INTRODUCTION

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 and directions in this SERVICE

DATA are based on the latest products

information available at the time of

publication.

CONTENTS

page

1SERVICE 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 CARBURETTOR ADJUSTMENT PROCEDURE .

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

2-2 Presetting Idle adjust screw, idle mixture

needle and hi speed (H) mixture needle .............. 7

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

3SERVICE HINT .............................................. 9

3-1

Reassebling 2 Nord-lock washers on Muffler ...

3-2 Adjusting throttle cable ................................ 10

3-3 Replacingcrankshaft ................................... 11

Reference No. 10-25L-01

R E V I SED : 20100 1

ISSUED: 200708

SERVICE INFORMATIONSRM-265ES

1SERVICE INFORMATION

1-1Specifications

ModelSRM-265ES (L) SRM-265ES (U)

Dimensions* Length mm (in)1780(70.1) 1785(70.2)

Width mm (in)345(13.6) 665(26.1)

Heightmm (in)313(12.3) 440(17.3)

Dry weight* kg (lb) 6.1 (13.4) 6.2 (13.7)

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

Rotation Anticlockwise as viewed from the output end

Displacement cm3 (in3)25.4(1.55)

Boremm (in)34.0(1.34)

Strokemm (in)28.0 (1.10)

Compression ratio 7.3

Carburetor Type Rotary type : Diaphragm, horizontal-draught, with primary

Model ZAMA RB-K89, RB-K94***

Ignition Type CDI (Capacitor discharge ignition) system

Digital magneto

Spark plugBPMR8Y

Exhaust Muffler type Spark arrester muffler with catalyst

Starter Type ES (effortless-start)

Rope diameter x length mm (in) 2.8 x 850(0.11 x 33.5)

Fuel** Type Premixed two-stroke fuel

Mixture ratio 50 :1 (2%)

PetrolMinimum 89 octane

Two-stroke engine oil ISO-L-EGD (ISO/CD13738),JASO FC/FD

Tank capacity L (U.S.fl.oz.)0.5 (16.9)

Clutch Type Centrifugal, 2-shoe pivot

Handle TypeFront : Crescent loop with cushion gripU-handle with integrated

Rear : Integrated control grip with cushioncontrol grip

Drive shaft Type Solid, hollow type with 7-tooth

Diameter - Length mm 7.0 - 1540

(in)(0.27 - 60.62)

Housing OD - ID mm 25.0 - 22.0

(in)(0.98 - 0.87)

Main pipeLength mm (in)1500(59.1)

Gear case Reduction ratio 1.4

Gear tooth Spiral bevel gear

LubricationLithium based grease or ECHO LUBETM

Cutter Type Nylon line cutter 3-tooth blade (230 mm)

Pilot diameter for blade )0.1(4.52)ni(mm

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 Nylon line head.

** Refer to Operator’s manual.

*** Refer to Technical Information No. 2009-395.

SERVICE INFORMATION

SRM-265ES 3

1-2 Technical data

Model SRM-265ES (L) SRM-265ES (U)

Engine

Idling speed r/min 2600 - 3200

Wide open throttle speed r/min 9400 - 10400* 10200 - 11200**

Clutch engagement speed r/min 3600 - 4200

Compression pressure MPa (kgf/cm2) (psi) 0.99 (10.1) (143)

Ignition system

Spark plug gap mm(in) 0.6 - 0.7 (0.024 - 0.028)

Minimum secondary voltage at 1500 r/min kV 15

Primary coil resistance Ω320 - 420

Secondary coil resistance kΩ2.7 - 3.3

Pole shoe air gaps mm(in) 0.30 - 0.40 (0.012 - 0.016)

Ignition timing at 2000 r/min °BTDC 7

at 3000 r/min °BTDC 5

at 8000 r/min °BTDC 28

at 11000 r/min °BTDC 22

Carburettor

Venturi Size mm(in) 10.5 (0.413)

Throttle Bore mm(in) 10.5 (0.413)

Idle adjust screw initial setting turn in*** 3 1/4

Idle mixture needle initial setting turn back 1 1/2

Hi speed H mixture needle initial setting

turn back 1 1/2

Test Pressure, minimum MPa (kgf/cm2) (psi) 0.05 (0.5) (7.0)

Metering lever height mm(in) 0.1-0.25 (0.004-0.01) lower than diaphragm seat

BTDC: Before top dead centre.

*With Nylon line cutter and shield.

**With 3-tooth blade (230 mm).

*** Set idle adjust screw to the point that its tip just contacts throttle plate before initial setting.

SERVICE INFORMATION SRM-265ES

1-3 Torque limits

Descriptions Size kgf• cm N•m in•lbf

Starter Starter pawl assembly M 8 160 - 200 16 - 20 140 - 175

system Starter case M 4* 25 - 35 2.5 - 3.5 22 - 33

Ignition Flywheel M 8 160 - 200 16 - 20 140 - 175

system Ignition coil M 4* 35 - 50 3.5 - 5 30 - 45

Fan cover M 5* 35 - 50 3.5 - 5 30 - 45

Spark plug M 14 130 - 170 13 - 17 112 - 150

Fuel Carburettor M 5 30 - 45 3.0 - 4.5 25 - 40

system Intake insulator M 5 60 - 80 6 - 8 55 - 70

Fuel tank with stand M 5* 40 - 60 4 - 6 32 - 55

Clutch Clutch shoe M 6 70 - 110 7 - 11 60 - 95

Cylinder cover Flanged bolt M 5* 30 - 45 3.0 - 4.5 25 - 40

Button bolt M 5* 20 - 30 2 - 3 17 - 25

Engine Crankcase M 5 70 - 110 7 - 11 60 - 95

Cylinder M 5 70 - 110 7 - 11 60 - 95

Muffler M 5 60 - 80 6 - 8 55 - 70

Exhaust guide M 4 14 - 28 1.4 - 2.8 12 - 24

Muffler cover M 5* 30 - 45 3.0 - 4.5 25 - 40

Top guard M 5* 20 - 40 2 - 4 20 - 32

Other Cutter fastener LM 10 280 - 320 28 - 32 245 - 280

Regular bolt, nut and screw M 3 6 -10 0.6 - 1 5 - 9

M 4 15 -25 1.5 - 2.5 13 - 22

M 5 25 -45 2.5 - 4.5 22 - 40

M 6 45 -75 4.5 - 7.5 40 - 65

M 8 110 -150 11 - 15 95 - 130

LM: Left-hand thread. * Apply thread locking sealant. (See below)

** The torque differences among four bolts should not exceed 20 kgf•cm (2N•m, 17in•lbf) on one cylinder or crankcase

1-4 Special repairing materials

Material Location Remarks

Grease Drive shaft

Gear case Lithium based grease or ECHO LUBETM

Rewind spring

Starter center post

Oil seal inner lips

Thread locking Starter case Loctite #675 or equivalent

sealant Fuel tank

Ignition coil Loctite #242, ThreeBond #1324 or equivalent

Fan cover

Top guard

Stand Loctite #222, Three Bond #1342 or equivalent

Muffler cover

Cylinder cover

SERVICE INFORMATION

SRM-265ES 5

5K228 5K229 5K230

5K231 5K016 5K042

0123456 7 8 9 10 11 12

0510

5K171 5K232

5K244

5K243

5K219

Description mm (in)

A Cylinder bore When plating is worn and aluminium can be seen

B Piston outer diameter Min. 33.92 (1.335)

C Piston pin bore Max. 9.035 (0.3557)

D Piston ring groove Max. 1.65 (0.065)

E Piston ring side clearance Max. 0.1 (0.004)

F Piston pin outer diameter Min. 8.98 (0.3535)

G Piston ring width Min. 1.45 (0.057)

H Piston ring end gap Max. 0.5 (0.02)

K Con-rod small end bore Max. 12.025 (0.4734)

L Crankshaft runout Max. 0.03 (0.001)

M Clutch drum bore Max. 59.5 (2.34)

1-5 Service limits

ABCD

EFGH

KLM

SERVICE INFORMATION SRM-265ES

Ignition Air Gap Gauge

#.014 = .35mm

P/N 91004

ECHO

0.4

0.8

1.2

MPa

Key Part Number Description Used for:

1 897801-33330 Tachometer PET-1000 Measuring engine speed

2 363018-00310 Washer Installing crankcase oil seal

3 895610-79920 L-hex wrench (4 mm) Removing and installing hex. socket bolts (M5)

4 897603-23030 PTO shaft puller Removing driven (PTO) shaft

5 897701-06030 Bearing wedge Removing ball bearings on crankshaft

6 897701-14732 Bearing tool Removing and installing crankcase ball bearings

7 897702-30131 Piston pin tool Removing and installing piston pin (Use 8 mm dia. adapter.)

8 91004 Module air gap gauge Adjusting pole shoe air gaps

9 897712-04630 2-pin wrench Removing and installing pawl carrier

10 91020 Limiter plug tool Removing and installing plug

11 897726-09130 Oil seal tool Installing crankcase oil seals

12 990511-30023 Spark tester Checking ignition system

13 897803-30133 Pressure tester Checking carburetor and crankcase leakages

14 900100-08008 Bolt

Removing magneto rotor (flywheel), crankshaft from crankcase

15 433019-12330 Flange nut Removing magneto rotor (flywheel)

16 91037 Compression gauge Measuring cylinder compression

1-6 Special tools

912

SERVICE INFORMATION

SRM-265ES 7

2 CARBURETTOR ADJUSTMENT PROCEDURE

2-1 General adjusting rules

A. Before starting the unit for adjustment, check the following items.

1. The correct spark plug must be clean and properly gapped.

2. The air filter element must be clean and properly installed.

3. The muffler exhaust port must be clear of carbon.

4. The fuel lines, tank vent and fuel filter are in good condition and clear of debris.

5. The fuel is fresh ( > 89 octane : RON ) and properly mixed at 50 : 1 with “ISO L-EGD” or “JASO-FC/FD” 2-

stroke oil.

6. Remove shield from gear case, and install nylon line cutter if 3-tooth blade is installed. Extend nylon line

cutter and cut nylon line cutter lengths to 180 mm (7.0 inches) for proper engine loading to adjust carburettor

on both SRM-265ES(L) and SRM-265ES(U).

B. Start and run engine for 2 minutes alternating rpm between WOT and idle every 5 seconds. Adjust idle speed

to 2,900 +/- 200 r/min by turing idle adjust screw. If engine does not run correctly after this adjustment, proceed to

the next step 2-2.

IMPORTANT : After adjusting carburettor according to the steps 2-2 and 2-3, the limiter plug(s) must

be installed in idle and hi speed (H) mixture needle(s) hole(s) to comply with Emission Directive.

2-2 Presetting Idle mixture needle and hi speed (H) mixture needle

Parts Required : 2 limiter plugs P/N P005-001270

1. Remove the plugs from Idle mixture needle hole

(A) and hi speed mixture needle hole (B) using limiter

plug tool (C) as follows.

1) Put limiter plug tool (C) on limiter plug in mixture needle

hole.

2) Push and turn limiter plug tool anticlockwise 2 turns into

limiter plug slowly.

3) Pull out limiter plug tool with the limiter plug from mixture

needle hole.

NOTE : If plug is damaged and stays in the hole,

use hand auger or pin-shaped tool to scrape, and

lift the cap pieces out of the hole.

Turn Idle mixture needle (D) clockwise completely until lightly seated.

Then turn it anticlockwise 1 1/2 turns.

Turn hi speed mixture needle (G) clockwise until lightly seated. Then turn it anticlockwise 1 1/2 turns.

3. Turn idle adjust screw (E) anticlockwise until screw tip just touches throttle plate (F). Then turn it in

clockwise 3 1/4 turns.

NOTE : Initial carburettor setting (Idle adjust screw, idle and hi speed mixture needles) shown here is to

start the engine after restoration or carburettor change. Idle adjust screw, idle and hi speed mixture needles

turn for designated engine revolution through procedures indicated here may vary. As long as idle and

WOT engine speed is set in given range, variance would be ignorable.

(A) (A)

(E)

(F)

(D)

(B)

(G)

(C)

1) 2) 3)

SERVICE INFORMATION SRM-265ES

2-3 Adjusting carburettor

1. Start and warm up engine alternating engine

speed between WOT and idle every 5 seconds for

1 minute.

2. Adjust idle mixture needle (D) to reach maximum

idle speed with 2.5 mm blade screwdriver.

3. Set idle speed to 3,700 r/min by turning idle adjust

screw (E). Engine speed should be stable at 3,700

+/- 50 r/min.

4. Turn idle mixture needle anticlockwise to reduce

engine idle speed 800 r/min to set idle speed at

2,900 r/min. The idle speed range is 2,800 - 3,000

r/min.

NOTE : Engine speed must be allowed to stabilize

a minimum of 20 seconds after each adjustment of

idle mixture needle to assure accurate tachometer

readings.

5. Adjust hi speed mixture needle (G) to reach

maximum WOT engine speed. Then turn hi speed

mixture needle anticlockwise to reduce WOT engine

speed 10 r/min (max. approx. 8,500 r/min).

6. SRM-265ES(L) : Reinstall shield with cutting knife.

Cut nylon line cutter lengths to 152 mm to match

nylon line cutter reach to shield cut knife. Start

engine again and verify engine idle speed ranges

from 2,700 to 3,100 r/min, and WOT engine speed

ranges from 9,400 to 10,400 r/min.

SRM-265ES(U) : Reinstall shield for 3-tooth

blade(230 mm). Start engine and verify engine idle

speed ranges from 2,700 to 3,100 r/min, and WOT

engine speed ranges from 10,200 to 11,200 r/min.

Make sure the nylon line cutter/3-tooth blade(230

mm) does not rotate when engine is idle,and engine

should accelerate smoothly.

7. After adjusting carburettor, insert and secure new

plug(s) (J) P005-001270 deep in the needle holes

per the Emission Directive using limiter plug tool (H).

NOTE : Engine WOT, and idle speed in field

operation may vary from final adjustment

specifications due to changing ambient conditions,

fuel, and engine loads. Safe engine speed variances

should be within the WOT and Idle speed ranges

listed in Section 1-1, otherwise the carburettor

should be readjusted.

(C)

(J)

(E)

(D)

(G)

(E)

SERVICE INFORMATION

SRM-265ES 9

3 SERVICE HINT

3-1 Reassembling 2 Nord-lock washers on Muffler

1. 2 Nord-lock washers (A) are installed to prevent

muffler nuts (B) from loosening. There is a chance

for the 2 Nord-lock washers (A) to drop separately

when loosening muffler nut (B).

2. If 2 Nord-lock washers (A) are separated,

reassemble 2 Nord-lock washers (A) as shown on

Fig.1

NOTE : 2 Nord-lock washers (A) are bonded for

spare parts(No. 92280-05000).

(A)

(Fig 1)

(B)

SERVICE INFORMATION SRM-265ES

3-2 Adjusting throttle cable

1. When squeezing throttle trigger (A), make sure

throttle plate (B) should be full open at WOT position.

Throttle plate tab (b) should contact with plastic boss

(E).

2. When squeezing throttle trigger (A) without

throttle trigger lockout (C), there is a chance for inner

cable (F) of throttle wire to move a little bit. However

throttle plate (B) should be no movement.

If throttle plate (B) can be moved, adjust nut (D)

using 8 mm spaner not to move throttle plate (B).

NOTE : If the throttle plate (B) moves when

squeezing throttle trigger (A) without throttle trigger

lockout (C), engine speed increases.

(A)

(C)

(A)

(B)(B)

(F)

(B)

(B) (E)

(D)

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