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SERVICE INFORMATION

GT-222ES, SRM-222ES

F226S, T226S, C226S

8

2-3 Adjusting carburettor

SRM-222ES, T226S, C226S: Remove shield and 
cut trimmer head line lengths to 180 mm.

GT-222ES, F226S: Cut trimmer head line lengths 
to 130 mm with shield. (normal lengths : 145 mm 
cut by shield knife.)

1.  Start and warm engine for 3 minute alternating 
engine speed between WOT for 50 seconds and 
idle for 10 seconds.

2.  Adjust Idle mixture needle (A) to reach maxi-
mum idle speed using 2.5 mm blade screwdriver.

3.  Set Idle speed to 3,700 r/min by turning Idle 
adjust screw (D). Engine speed should be stable at 
3,700 +/- 50 r/min.

4.  Turn Idle mixture needle anticlockwise to reduce 
engine idle speed 1,400 r/min to set idle speed at 2,300 
r/min. The idle speed range is 2,200 - 2,400 r/min.

5. Turn Idle adjust screw (D) clockwise to increase 
idle engine speed to set idle at 3,000 r/min. The 
idle speed range is 2,900 to 3,100 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.

6.  Adjust Hi speed mixture needle (B) to reach maximum 
WOT engine speed.(max. approx. 8,000 r/min) Then turn 
Hi speed mixture needle (B) anticlockwise to reduce WOT 
engine speed 20 r/min (RANG : 10-30 r/min).

NOTE :

 Nylon line length should be 180 mm with-

out shield on SRM-222ES, T226S and C226S.

 

 

Nylon line length should be 130 mm with 

shield on GT-222ES and F226S.

7. SRM-222ES(L), T226S : Stop engine and rein-
stall shield with knife, and restart engine and verify 
engine idle speed ranges from 2,600 to 3,400       
r/min, and expand and cut nylon line by shield 
knife and WOT engine speed ranges from 9,000 to 
10,000 r/min on SRM-222ES(L) and T226S, from 
6,700 to 7,700 r/min on GT-222ES and F226S.

NOTE:

 Nylon line length should be 145 mm with shield.

SRM-222ES(U), C226S : Stop engine and reinstall 
shield for 3-tooth blade (230 mm) and the blade. 
Restart engine and verify engine idle speed ranges 
from 2,600 to 3,400 r/min, and WOT engine speed 
ranges from 10,500 to 11,500 r/min.

Make sure the nylon line cutter does not rotate when engine is at idle. Engine should start and accelerate smoothly.

8. After adjusting carburettor, insert and secure new plug(s) (E) P005-001270 deep in the needle holes 
per the Emission Directive using limiter plug tool 91020 (C).

NOTE : 

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 1-2, otherwise the carburettor should be readjusted.

(C)

(E)

(A)

(D)

(C)

(B)

Nylon line lengths

Model name

SRM-222ES(L) SRM-222ES(U)

GT-222ES

T226S

C226S

F226S

Carburettor 
setting

180 mm

180 mm

130 mm

Con

fi

 rming

145 mm

-

145 mm

(E)

Summary of Contents for Echo SRM-222ES

Page 1: ...of publication 1 SERVICE DATA TRIMMER BRUSHCUTTER ECHO GT 222ES SRM 222ES shindaiwa F226S T226S C226S STAGE MODEL Serial number 37000001 and after 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 CARBURETOR ADJUSTMENT PROCEDURE 7 2 1 General adjusting rules 7 2 2 Presettin...

Page 2: ... mm in 3 0 x 820 0 12 x 32 2 Fuel Type Premixed two stroke fuel Mixture ratio 50 1 2 Petrol Minimum 89 octane Two stroke engine oil ISO L EGD ISO CD13738 JASO FC FD Tank capacity L U S fl oz 0 38 12 8 Clutch Type Centrifugal 2 shoe pivot Handle Type Front Crescent loop with cushion grip U handle with integrated control grip Rear Integrated control grip with cushion Drive shaft Type Flexible Diamet...

Page 3: ...istance Ω 320 420 Secondary coil resistance kΩ 2 7 3 3 Pole shoe air gaps mm in 0 3 0 4 0 012 0 016 Ignition timing at 3 000 r min BTDC 18 at 8 000 r min BTDC 34 at 11 000 r min BTDC 14 Carburettor Venturi Size 9 0 0 354 Throttle Bore 10 5 0 413 Idle adjust screw initial setting turns out 8 7 8 L mixture needle initial setting turns out 3 7 8 H mixture needle initial setting turns out 1 1 8 Test P...

Page 4: ... 5 90 110 9 11 80 95 Exhaust guide M 4 15 30 1 5 3 13 25 Muffler cover Fan cover side M 5 30 40 3 4 25 32 Recoil side M 5 25 45 2 5 4 5 22 40 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 Tapping screw Apply thread locking sealant Se...

Page 5: ...der bore When plating is worn and aluminium can be seen B Piston outer diameter Min 32 10 1 264 C Piston pin bore Max 8 030 0 3161 D Piston ring groove Max 1 6 0 063 E Piston ring side clearance Max 0 1 0 004 F Piston pin outer diameter Min 7 97 0 3138 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 12 000 0 4724 L Crankshaft runout Max 0 03 0 001...

Page 6: ...ng 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 S...

Page 7: ...i speed mixture needle s hole s to comply with Emission Directive 2 2 Presetting Idle adjust screw Idle mixture needle and Hi speed mixture needle Tools Required Small screwdriver with 2 5 mm blade P N G310 000050 electronic tachometer P N 91020 limiter cap tool with 2 5 mm left hand thread Parts Required 2 limiter plug P N P005 001270 1 Remove plugs from Idle mixture needle hole A and Hi speed mi...

Page 8: ...ngth should be 180 mm with out shield on SRM 222ES T226S and C226S Nylon line length should be 130 mm with shield on GT 222ES and F226S 7 SRM 222ES L T226S Stop engine and rein stall shield with knife and restart engine and verify engine idle speed ranges from 2 600 to 3 400 r min and expand and cut nylon line by shield knife and WOT engine speed ranges from 9 000 to 10 000 r min on SRM 222ES L an...

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