All 549 pages of this Yanmar SV26 Service Manual (OEM #MMB17ENMA00101) zero in on one machine: your SV26 compact excavator, from the cylinder head down to the rubber track crawlers. Inside, you get a full wiring diagram, hydraulic circuit schematics with complete circuit operation breakdowns, a tightening torque section covering machine hardware, engine fasteners, and hydraulic fittings, plus a dedicated error code list and troubleshooting procedures for the electric system. The engine section alone walks you through cylinder head service, fuel injection timing, injector removal, cooling pump teardown, and lubrication system checks. Torque the M16 track roller bolts to 206-245 N.m with Loctite 262, and keep hydraulic oil 10 mm above the midpoint of the level gauge at operating temperature. Your machine is down. Stop guessing and get the factory answer the first time. Bookmarked and searchable.
What's Inside This Yanmar SV26 Manual
| System | Pages | Key Topics |
|---|---|---|
| General Cautions for Maintenance Work | 10-21 | Correct Work, Safety Precautions, Preparations, Cautions for Disassembly and Reassembly, Cautions for Removal and Installation of Hydraulic Equipment |
| Technical Data | 22-43 | Specifications, Outline Drawing and Working Area, Weight List of Main Parts, Lifting Capacity List, Specifications for Attachment, Periodic Inspection and Servicing, Fuel |
| Service Standards | 44-73 | Machine Performance, Undercarriage (Rubber Track Specifications, Steel Track Specifications, Common Specifications of Steel & Rubber Crawlers), Controls |
| Engine | 74-217 | Safety, Cylinder Head, Crankshaft and Camshaft Components, Fuel System, Cooling System, Lubrication System, Starter Motor, Alternator |
| Electric System | 218-239 | Electric Equipment of Machine, Error Code List |
| Hydraulic System | 240-458 | Outline, Circuit Operation, Hydraulic Pump, Control Valve, Pilot Valve, Swing Motor, Travel Motor |
| Adjustment and Repair | 459-549 | Engine and Electric Equipment, Undercarriage, Controls, Hydraulic Equipment, Work Implements |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Proper hydraulic oil level above middle of oil level gauge (at 0 to 30°C oil temperature) | 10 mm | p. 528 |
| Fuel filter filtration area | 2000 cm³ | p. 31 |
| Air cleaner filtration area | 0.9 m² | p. 31 |
| Idler & shaft D wear limit | 24 mm | p. 55 |
| Track roller tightening torque | 206 to 245 N·m | p. 64 |
| System Relief Pressure (P1, P2) | 20.6 MPa | p. 54 |
| Alternator Nominal Output | 12 - 40 V - A | p. 32 |
Yanmar SV26 Common Problems This Manual Covers
Yanmar SV26 hydraulic pump whining noise after service and attachments become slow, weak, or intermittent. p. 240
Inspect the main relief valve and verify system relief pressure at P1 and P2 reaches 20.6 MPa. Check the tank fluid level on page 528. Ensure proper hydraulic oil level sits exactly 10 mm above the middle of the oil level gauge. Drain air from the circuit.
Manual Section: Hydraulic SystemEngine turns over slowly or stalls unexpectedly when operating under heavy load. p. 74
Drain the fuel and water separator completely. Inspect the fuel system components and verify the fuel filter filtration area meets the 2000 cm³ specification listed on page 31. Test the battery and check alternator output to confirm it delivers 12 - 40 V - A under load.
Manual Section: EngineUndercarriage makes clanking sounds during travel and rubber tracks feel loose or machine derails. p. 44
Measure track tension and inspect undercarriage components for excessive wear. Turn to page 55 to verify the idler and shaft D wear limit has not exceeded 24 mm. If replacing components, torque all track roller bolts to 206 to 245 N·m as specified on page 64.
Manual Section: Service StandardsEngine runs hot under load and coolant temperature gauge spikes into the red zone. p. 74
Clean debris from the radiator grille and inspect the cooling system hoses for leaks. Remove the intake housing and verify the air cleaner element maintains a 0.9 m² filtration area as shown on page 31. Flush the engine coolant and test the thermostat opening temperature.
Manual Section: EngineFrequently Asked Questions
How do I reset the Yanmar SV26 error code?
To reset an error code, refer to the corrective measures in the Error Code List (pages 234-238). Turn the starter switch to the OFF position and then to the ON position to check if the error code appears again. This clears the fault indication if the underlying issue has been resolved.
What does the Yanmar SV26 alarm code list cover?
The Error Code List (pages 234-238) covers alarm classifications (Caution, Warning), descriptions such as accelerator sensor malfunction above normal operating range, detection conditions (sensor voltage 4.6 V or more, or 0.2 V or less), causes including connector failures or defective sensors, and corrective measures for each code.
What is the correct hydraulic oil level for the Yanmar SV26?
The proper hydraulic oil level is 10 mm above the middle of the oil level gauge at 0 to 30 degrees C oil temperature (page 528). If the SV26 shows slow or weak attachments, check the tank fluid level first and inspect the main relief valve — system relief pressure at P1 and P2 should reach 20.6 MPa.
What torque spec applies to the Yanmar SV26 track roller bolts?
Torque all track roller bolts to 206 to 245 N.m as specified on page 64. If the undercarriage is clanking or tracks feel loose, inspect the undercarriage components and verify the idler and shaft D wear limit has not exceeded 24 mm (page 55).
What file format is this manual and how do I download it?
This Yanmar SV26 Service Manual is a searchable PDF (549 pages). After purchase, you receive an instant download link. Open it in any PDF viewer.
Can I print this manual?
Yes. The PDF is print-ready. You can print individual sections such as torque specs or wiring diagrams, or print the full 549 pages. There are no printing restrictions on this document.
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