Part of the Yanmar Repair Manuals.
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.
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 System p. 240Engine turns over slowly or stalls unexpectedly when operating under heavy load.
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: Engine p. 74Undercarriage makes clanking sounds during travel and rubber tracks feel loose or machine derails.
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 Standards p. 44Engine runs hot under load and coolant temperature gauge spikes into the red zone.
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: Engine p. 74Frequently Asked Questions
How do I reset the Yanmar SV26 error code?
To reset an error code, refer to the corrective measures provided in the Error Code List. A common step is to turn the starter switch to the "OFF" position and then to the "ON" position to check if the error code is displayed again. This action helps to clear the fault indication if the underlying issue has been resolved. p. 215
How will I receive this Yanmar SV26 Service Manual?
A 549-page Service Manual in searchable PDF format (106 MB), available the moment you complete checkout. View on computer, tablet, or phone, with no shipping wait.
Are there any print restrictions on this Yanmar SV26 manual?
No restrictions at all. Print individual pages, full chapters, or the entire manual. The PDF is completely unlocked.
Can I find wiring schematics in this Yanmar SV26 manual?
Yes, full electrical schematics are included with wire colors, connector locations, and circuit descriptions.
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