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A. Attention Statements 

Throughout this manual are special "attention" 
statements surrounded by boxes and preceded 
by the triangular "Attention" symbol.  They 
indicate situations where your safety or the 
integrity of your repair may be in jeopardy.  
Follow the advice in these statements carefully. 
The purpose of these statements and their 
formatting are shown in the adjacent column. 
 

B. Advisory Statements 

This manual also contains three other types of 
statements that  provide important or 
noteworthy advice. They are "IMPORTANT!," 
"NOTE:" and  

.  The purpose of these 

statements and their formatting are shown in 
the adjacent column. 

 
C. Additional Resources 

The relevant illustrated parts list (IPL) is a  
helpful companion to this service manual. It 
shows the installation order of all components 
and assemblies, and gives part numbers for 
items that may need replacing.  Also, refer to 
any technical bulletins that may have been 
issued to update the contents of this manual. 
 

D. Special Tools  

Some of the repair procedures described in this 
manual involve special Shindaiwa tools. These 
tools are identified by name and part number in 
the step-by-step explanations.  A complete 
listing of all the special tools required for this 
product can be found in the "Special Tools" IPL 
(P/N 80390). 
 

E. Exclusive Use  

This service manual has been created for the 
exclusive use of trained Shindaiwa technicians. 
It should not be reproduced or shared with 
others. 
 

F.  Original Replacement Parts 

Always use original Shindaiwa replacement 
parts. They have been engineered and 
manufactured specifically for this product and 
they guarantee optimum performance, safety 
and service life.     

 

A message preceded by "IMPORTANT" is 
one that possesses special significance. 
  

NOTE:

 

A statement preceded by "NOTE" contains 
information that is handy to know and may 
make your job easier. 
 

 

A statement preceded by a pointing 

finger is a tip, suggestion, or other "trick of 
the trade" that just might ease your task.

 

Section

 

3  Getting Started

 

Attention 
Statements; 
Technical 
Resources & 
Issues 

      WARNING! 

     

A statement preceded by   

   the 

word 

"WARNING" 

contains 

information that should be acted upon to 
prevent serious bodily injury. 

 

!

      CAUTION! 

     

A statement preceded by   

   the 

word 

"CAUTION" 

contains 

information that should be acted upon to 
avoid damaging the machine or  parts 
that are being  repaired. 

 

!

IMPORTANT!

Edition 2 •  09/2007

Содержание T2510

Страница 1: ...SHINDAIWA SERVICE MANUAL 7 50 SERVICE MANUAL T2500 T2510 T3410 Trimmer Brushcutter with C 4 Technology Four Stroke Engine Edition 2 September 2007...

Страница 2: ...tment 8 5 Pushrods Followers Cam 11 6 Reed Valve Inspect Replace 13 7 Crankcase Intake Sealing 14 8 Inspecting Impulse Passage 16 9 General Specifications 17 10 Tolerances Wear Limits 21 11 Torque Val...

Страница 3: ...high exhaust emissions occur due to exhaust scavenging unburned fuel not the fuel oil mix Unlike conventional four strokes the C4 engine can run in any position all day long No dipsticks oil filling b...

Страница 4: ...o incorporating the upper crankcase half the cylinder also has compartments for cam gear assembly and overhead valve components rocker arms valves and valve springs Differences 2510 3410 The 3410 engi...

Страница 5: ...not a problem because four stroke cylinder does not have port openings D Cam Gear Valve Train Four stroke intake and exhaust functions are controlled by a single lobe nylon cam gear Cam lobe activates...

Страница 6: ...ls are identified by name and part number in the step by step explanations A complete listing of all the special tools required for this product can be found in the Special Tools IPL P N 80390 E Exclu...

Страница 7: ...35 mm clearance D Before Proceeding Make sure engine is cold Reassemble engine except valve cover before loosening adjusting hardware Loosen rocker arm adjusting nut just prior to performing adjustme...

Страница 8: ...aligns with left inside edge of clutch drum housing If housing has been removed align adjacent flywheel fin with edge of cylinder casting STEP 3 Rotate flywheel back and forth while observing rocker...

Страница 9: ...urn engine over several times and return to TDC compression Recheck with proper feeler gauge to make sure clearance adjustment did not change as a result of tightening locknut Readjust as necessary ST...

Страница 10: ...r hemostat to move upper end of pushrod into position When installing pushrods verify that they are properly seated in cupped receivers in follower and rocker arm adjustment screw C Remove Rocker Arms...

Страница 11: ...nment and reinstall screw Tip of screw should mesh with marked notch on cam gear 4 Complete engine assembly 5 Remove timing screw install original washer and reinstall with thread locking compound Alw...

Страница 12: ...mm Cracking or warping Discoloration or corrosion Debris accumulation Replace reed valves that exceed gap specification or those with indications of warping discoloration corrosion or debris build up...

Страница 13: ...uence is similar to two stroke pressure test Requires crankcase pressure testing kit P N 72174 99200 STEP 1 Remove carburetor but leave insulator block reed valve in position STEP 2 Remove muffler STE...

Страница 14: ...o cracking no rough sealing surfaces no pulled inserts cast in nuts Always remove insulator block reed valve and inspect venturi impulse side for cracking Cracks in this area are rare but do occur Che...

Страница 15: ...engine over slowly and watch impulse passage Remove spark plug if easier cranking desired If impulse passage is working properly the drop of oil should suck in and blow out as the engine revolves STEP...

Страница 16: ...ings Ball bearings Conrod Forged 1 piece Conrod bearings large small Caged needle bearing Conrod thrust control Small end of conrod Piston Aluminum silicon alloy Rings 2 Cylinder Chrome plated etched...

Страница 17: ...n ANTI VIBRATION Full A V system Engine lower unit Rubber cushion Front handle Soft grip Rear handgrip Soft grip Spring rubber on harness n a LOWER UNIT Drive type Gearcase with 4 bearings spiral beve...

Страница 18: ...gs Ball bearings Conrod Forged 1 piece Conrod bearings large small Caged needle bearing Conrod thrust control Small end of conrod Piston Aluminum silicon alloy Rings 2 Cylinder Chrome plated etched FU...

Страница 19: ...n ANTI VIBRATION Full A V system Engine lower unit Rubber cushion Front handle Soft grip Rear handgrip Soft grip Spring rubber on harness n a LOWER UNIT Drive type Gearcase with 4 bearings spiral beve...

Страница 20: ...08 0 2 Cylinder inside bore diameter 1 338 34 0 1 339 34 02 Cylinder out of round 00039 010 0 0012 03 Cylinder taper 00059 015 0 002 0 05 Piston ring width 059 1 5 057 1 45 Piston ring thickness 059 1...

Страница 21: ...iameter 1968 1980 5 005 5 035 0 199 5 06 025 Valve spring free length 692 17 6 0 685 17 0 6 Valve stem OD Intake 1365 1370 3 470 3 485 0 135 3 435 035 Exhaust 1353 1359 3 440 3 455 0 134 3 405 035 Val...

Страница 22: ...006 0 15 Cylinder inside bore diameter 1 496 38 0 1 497 38 02 Cylinder out of round 00039 010 0 0012 03 Cylinder taper 00059 015 0 002 0 05 Piston ring width 059 1 5 057 1 45 Piston ring thickness 059...

Страница 23: ...eter 1968 1980 5 005 5 035 0 199 5 06 025 Valve spring free length 692 17 6 0 685 17 0 6 Valve stem OD Intake 1365 1370 3 470 3 485 0 135 3 435 035 Exhaust 1353 1359 3 440 3 455 0 134 3 405 035 Valve...

Страница 24: ...70 Plate cam gear 01280 04062 Tapping screw M4X6 1 7 10 8 12 Cam gear cover cylinder 11022 04140 Allen screw M4X14 5 20 40 25 45 Timing screw cylinder 62901 43310 Phillips screw M5X7 1 35 45 40 50 Ad...

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