Every one of the 68 pages in this Yanmar TS190(R), TS230(R) Service Manual PDF focuses on getting your diesel engine running to factory conditions. Inside, you get complete teardown and reassembly procedures covering the cylinder head, fuel system, gearcase, and balancer mechanism. Open to the dedicated troubleshooting charts to quickly diagnose overheating, excessive oil consumption, or difficult starting. You will also find detailed exploded views and strict service standards for checking piston ring end gaps and valve clearances. Verify your injection timing is set exactly to BTDC 19°±1 and lock down the connecting rod bolts to 780–820 kg-cm on the larger displacement models. Stop hunting for reliable engine data on the internet. Download this bookmarked file directly to your tablet, tap straight to the spec you need, and get the repair done right the first time.
What's Inside This Yanmar TS190(R), TS230(R) Manual
| System | Pages | Key Topics |
|---|---|---|
| External View | 5 | TS190R (Radiator), TS190 (Hopper), TS230R (Radiator), TS230 (Hopper) |
| Specifications | 6 | Combustion System, No. of Cylinders - Bore X Stroke, Displacement, Rated Continuous Output, Compression Ratio, Lubrication System |
| Cross Sectional View | 7 | TS190R, TS230R |
| Installation Dimensions | 8-9 | Center of Cylinder, Center of Crankshaft, Exhaust Pipe Seat, Flywheel, Engine Foundation Bolt |
| Installation and Engine Performance | 10 | Unpacking Inspection, Common Base and Engine, Remote Control of Regulator |
| V-Pulley and V-Belt | 11-12 | V-Belt Installation, Tension Adjustment, Belt Stretching Method, Pulley Size Selection, Centering of Pulleys |
| Disassembly and Reassembly | 13-30 | Preparation for Disassembly, Disassembling/ Assembling Tools, Meters, Instruments and Service Accessories, Disassembling Procedure, Disassembly of Radiator |
| Cylinder Head | 31-34 | Exhaust Valve, Intake Valve, Valve Spring, Drain Cock, Intake Valve Rocker Arm, Valve Rocker Arm Support, Bonnet |
| Piston and Piston Ring | 35-37 | Cylinder Liner |
| Crankshaft | 38-40 | Oil Seal, Main Bearing Housing, Gasket, Snap Ring, Ball Bearing, Balance Weight, Crankshaft Gear |
| Gearcase and Gears | 41-45 | Balancer Mechanism, Connecting Rod, Camshaft and Tappet |
| Fuel System | 46-49 | Fuel Injection Pump, Fuel Injection Valve, Plunger, Delivery Valve, Nozzle |
| Lubrication System | 50-53 | Governor System |
| Cooling System | 54-55 | Radiator Cap, V-Belt, Sub-Tank, Cooling Fan Bearing, Hopper Core, Baffle Board |
| Breather | 56-57 | Air Cleaner, Other Accessories |
| Maintenance Schedule | 58 | Fuel Level Check, Fuel Filter Element Cleaning, Lubricating Oil Change, Cooling Water Refill, V-Belt Tension Adjustment, Valve Clearance Adjustment |
| Service Standards | 59-60 | Combustion Surface, Intake/exhaust Valve, Piston Ring End Gaps, Connecting Rod, Crankshaft, Cylinder Liner |
| Main Bolt/Nut Tightening Torques | 61 | Cylinder Head Stud Bolt, Connecting Rod Bolt, Flywheel End Nut, Fan Clamping Nut, Main Bearing Housing Clamping Bolt, Pipe Joint Bolt |
| Troubleshooting | 62-67 | Insufficient Output, Incorrect Fuel Injection System, Overheating, Excessive Engine Oil Consumption, Difficult Starting, Engine Knock |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Injection angle | 150° | p. 49 |
| Valve clamp nut tightening torque | 130-180 kg-cm | p. 49 |
| Injection timing | BTDC 19°±1 | p. 6 |
| Injection pressure | 200+5-0 kg/cm² | p. 6 |
| Cylinder head nut tightening torque | 2700-2900 kg-cm | p. 61 |
| TS190(R) | ||
| Displacement | 1,007 l | p. 6 |
| Lubricating oil capacity (oil pan) Effective/Total | 2.0/3.6 ℓ (US gal) | p. 6 |
| Connecting rod bolt tightening torque | 580-620 kg-cm | p. 61 |
| TS230(R) | ||
| Displacement | 1,132 l | p. 6 |
| Lubricating oil capacity (oil pan) Effective/Total | 3.0/6.0 ℓ (US gal) | p. 6 |
| Connecting rod bolt tightening torque | 780-820 kg-cm | p. 61 |
Yanmar TS190(R), TS230(R) Common Problems This Manual Covers
Yanmar TS190R engine cranks over fine but refuses to fire up during cold morning starts p. 62
Inspect the fuel system components using the troubleshooting chart on page 62. Verify injection timing is set to BTDC 19°±1 as shown on page 6. Remove and clean the fuel injection valve, a service required every 600 hrs according to the maintenance schedule on page 58.
Manual Section: 12. TroubleshootingMotor bogs down under heavy load and lacks power during normal operating conditions p. 31
Check valve adjustments to restore power. Measure the valve head clearance in the cold state and adjust to 0.2 mm as specified on page 28. Torque the cylinder head nuts to 2700 to 2900 kg-cm using the main bolt tightening torque chart found on page 61.
Manual Section: 8. Inspection and ServicingCoolant temperature runs excessively hot and water boils over after an hour of run time p. 62
Inspect the V-belt tension and cooling fan assembly. Verify the fan clamping nut tightening torque is set to 400 to 500 kg-cm for TS190 models, referencing page 55. Review the troubleshooting steps on page 62 to diagnose blocked radiator passages or worn water pump components.
Manual Section: 12. TroubleshootingEngine blows thick black smoke constantly and consumes excessive amounts of diesel under load p. 49
Test the fuel injector performance. Verify the injection cracking pressure reaches exactly 200 kg/cm² as detailed on page 49. Check the spray pattern for a 150° injection angle. Tighten the injector case nut to 700 to 750 kg-cm to prevent internal pressure leaks.
Manual Section: 8. Inspection and ServicingDeep metallic knocking noise from the bottom end accompanied by low oil pressure warnings p. 58
Drain the oil pan and inspect for bearing material. Verify the lubricating oil capacity is 2.0/3.6 l for TS190 models as shown on page 6. Service the auto-clean filter by turning the handle 2 to 3 times a day according to page 53.
Manual Section: 9. Maintenance ScheduleFrequently Asked Questions
How to bleed the YANMAR TS190R/TS230R fuel system after running out of diesel?
To bleed the fuel system, first loosen the air vent plug on top of the fuel filter to bleed air, ensuring the fuel tank has oil and the fuel cock is open. Next, bleed air from the pipe through the air vent plug by the coupling bolt on the filter outlet side. Finally, bleed the air from the fuel injection pump through its air vent plug, turning the pump with the decompression unit in operation until an injection sound is heard.
How to bleed the YANMAR TS190R/TS230R fuel pump after service?
After servicing the fuel pump, bleed the air left in the pump by loosening the air vent plug on the fuel injection pump. With the decompression unit in operation, turn the pump to bleed the air from the pump outlet side until an injection sound is heard, ensuring the oil spreads throughout the engine.
What are the torque specifications for the YANMAR TS190R/TS230R cylinder head clamping nuts?
The cylinder head clamping nuts (M18) for both TS190R and TS230R models should be tightened to a torque of 2700 – 2900 kg-cm. It is recommended to apply lubricating oil to the thread bearing surface before tightening.
What are the torque specifications for the YANMAR TS190R/TS230R connecting rod bolts?
The connecting rod bolts for the TS190R (M11) should be tightened to 580 – 620 kg-cm. For the TS230R (M12), the connecting rod bolts should be tightened to 780 – 820 kg-cm.
What are the torque specifications for the YANMAR TS190R/TS230R main bearing housing clamping bolts?
The main bearing housing clamping bolts (M10) for the YANMAR TS190R/TS230R engines should be tightened to a torque of 450 – 550 kg-cm.
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