All 27 pages of this Yanmar 3TNM72-AFS Mower ZTR Parts Catalog (OEM #0CW10-G61100) are built around one job: putting the right part number in your hand for the Ferris ZTR engine. Inside you get exploded views for every major assembly, from cylinder block and crankshaft to fuel injection pump, governor, cooling water system, and starting motor. Part numbers are organized by system with cross-references, so you can identify a component visually, confirm the OEM number, and order exactly what you need. Confirm the generator is the 12V-40A unit or cross-reference the 0.25mm undersize crank pin metal before placing your order. Wrong parts waste days. Bookmarked by assembly, this PDF opens on any device so you can pull the number at the counter or right there in the shop.
What's Inside This Yanmar 3TNM72-AFS (Ferris ZTR Mower) Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Preface. | 2-3 | - |
| Content. | 4 | - |
| Cylinder Block | 5 | Cylinder Block Assy, Knock Pipe, Thrust Metal Assy, Idle Gear Shaft, Cylinder Head Gasket, Fop Bolt Gasket, Oil Seal, Pump Gasket |
| Gear Housing | 6 | Case Gear, Pump Timing Cover, Oil Seal, Lub. Oil Supply Cap |
| Mounting Flange & Oil Sump | 7 | Mounting Flange, Lub. Oil Sump Assy, Pin, Bolt |
| Cylinder Head & Bonnet | 8 | Nozzle Protector, Nozzle Gasket, Valve Cap, Cylinder Head Assy, Intake Valve, Exhaust Valve, Valve Spring, Spring Retainer |
| Exhaust Manifold | 9 | Manifold Gasket, Silencer Gasket, Stud |
| Camshaft & Driving Gear | 10 | Tappet, Push Rod, Camshaft Assy, Thrust Bearing, Idle Cmp Gear, Fuel Pump Gear, Idle Gear Bush |
| Crankshaft & Piston | 11 | Crankshaft Assy, Crankshaft Gear, Flywheel Assy, Ring Gear, Crankshaft V-pulley, Piston Assy, Piston Ring Set, Connecting Rod Assy |
| Lub. Oil System | 12 | Lub. Oil Pump Assy, Lub. Oil Dipstick, Dipstick Guide, Lub. Oil Pipe Assy, Cover, Pk, Oil Pressure Switch, Lub. Oil Filter Assy |
| Cooling Water System | 13 | Water Pump Assy, Water Pump Cover, Pk Pump, Water Pump Gasket, Round Gasket, Water Pump V-pulley, V-belt, Cooling Fan |
| Fuel Injection Pump | 14-15 | Injection Pump Assy, Camshaft, Retainer, Plunger Assy, Flange, Spring Retainer, Plunger Spring, Fo Tappet |
| Governor | 16-17 | Case Gasket, Cover Gasket, Governor Case Assy, Governor N Case Assy, Link Cmp, CLASIFIEDMARK93 Link, Lever Shaft, Control Shaft Assy |
| Fuel Injection Valve | 18 | Fuel Injector, Nozzle Cmp, Nozzle Holder Assy, Nozzle Spring, Spring Seat, Valve Stop Spacer, Pipe Retainer, Fuel Injection Pipe |
| Fuel Filter | 19 | Pipe Joint, Fuel Feed Pump Assy, Fuel Filter Assy, Spring, Lever, Strainer Cup, Retaining Ring, Strainer Element |
| Starting Motor | 20 | 2KW Starter Assy, Field Coil Assy, Brush Holder Assy, Brush, Brush Spring, Rear Cover Assy, Gear, Bracket |
| Generator | 21 | 12V-40A Generator, Assy Generator, Rz Assy, Cover, Belt Adjuster, Spacer, Diode, Timer |
| Gasket Set | 22 | Gasket Kit, Cylinder Head Gasket, Fop Bolt Gasket, Bonnet Gasket, Bonnet Cover Gasket, Valve Stem Seal, Nozzle Protector, Nozzle Gasket |
| Short Block | 23 | Short Block Assy, Cylinder Block Assy, Tappet, Camshaft Assy, Crankshaft Assy, Piston Assy, Connecting Rod Assy, Crank Pin Metal Assy |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Main Metal Undersize | 0.25 | p. 5 |
| Crank Pin Metal Undersize | 0.25 | p. 11 |
| Piston Ring Set Oversize | 0.25 | p. 11 |
| Cooling Water Pipe Dimensions | 7X 230 | p. 13 |
| Generator Rating | 12V-40A | p. 21 |
| O-RING 1A P-10A Size | P-10A | p. 19 |
| O-RING 1A P-18.0 Size | P-18.0 | p. 22 |
Yanmar 3TNM72-AFS (Ferris ZTR Mower) Common Problems This Manual Covers
Yanmar 3TNM72-AFS fuel injector nozzle assembly part number unclear, need correct holder and nozzle separately p. 18
Check the Fuel Injection Valve exploded view on page 18. The Nozzle Cmp and Holder Assy are listed as separate line items from the complete injector assembly. Identify which sub-component needs replacement before ordering. Verify the fuel injection pipe and hose part numbers on the same page, then cross-reference the parts index to confirm serial number fitment.
Manual Section: Fuel Injection ValveStarter motor pinion gear or brush holder part number needed, unsure which sub-assembly to order p. 20
Open the Starting Motor section on page 20. The exploded view lists the Field Coil Assy, Brush Holder Assy, and Pinion Gear Assy as individual line items. Identify the failed sub-component and order only that assembly rather than the complete Starter Assy. Cross-reference the parts index for the current part number before placing the order.
Manual Section: Starting MotorWater pump, thermostat, and V-belt part numbers needed for cooling system service, unsure which items are discrete p. 13
Refer to the Cooling Water System diagram on page 13. The Water Pump Assy, Thermostat, Cooling Fan, and V-Belt are listed as separate line items. The cooling water pipe dimensions are 7x230 (page 13). Also locate the Sub Tank Assy part number on the same page if the overflow reservoir is being replaced at the same time.
Manual Section: Cooling Water SystemPiston ring set and crankpin bearing part numbers needed for engine overhaul after compression loss p. 11
Open the Crankshaft & Piston section on page 11 to find the Piston Assy, Connecting Rod Assy, and ring set listed as separate line items. The Piston Ring Set Oversize is 0.25 and the Crank Pin Metal Undersize is also 0.25 (both page 11). Check the Short Block section on page 23 if sourcing a pre-assembled short block is more practical than ordering individual components.
Manual Section: Crankshaft & PistonFuel filter element, strainer cup, and o-ring part numbers needed for scheduled maintenance interval p. 19
Check the Fuel Filter section on page 19. The Filter Assy, Fuel Feed Pump Assy, Strainer Cup, and Strainer Element are listed as discrete line items. O-Ring size P-10A is cataloged separately on page 19. Order the o-ring alongside the filter element to avoid a second service call for the missing seal.
Manual Section: Fuel FilterComplete gasket set part number needed for top-end rebuild, individual head gasket also required separately p. 22
Locate the Gasket Set section on page 22, which lists the complete engine gasket kit as a single part number. O-Ring size P-18.0 is itemized separately on page 22. If only the cylinder head is being opened, cross-reference the Cylinder Head & Bonnet section on page 8 for the head gasket and valve stem seal part numbers to order only what is needed.
Manual Section: Gasket SetFrequently Asked Questions
What are the replacement specifications for fuel injectors?
For the Yanmar 3TNM72-AFS engine, the replacement specification for the fuel injector is part number 719125-53100. This part is listed as 'INJECTOR, FUEL' and is required in a quantity of 3.
What are the replacement specifications for fuel filter?
For the Yanmar 3TNM72-AFS engine, the replacement specification for the fuel filter assembly is part number 129053-55620, listed as 'FILTER ASSY, FUEL' with a quantity of 1. Additionally, the 'ELEMENT, STRAINER' has part number 119810-55650, also with a quantity of 1.
How do you fix yanmar 3TNM72-AFS fuel injector nozzle assembly part number unclear, need correct holder and nozzle separately?
Check the Fuel Injection Valve exploded view on page 18. The Nozzle Cmp and Holder Assy are listed as separate line items from the complete injector assembly. Identify which sub-component needs replacement before ordering. Verify the fuel injection pipe and hose part numbers on the same page, then cross-reference the parts index to confirm serial number fitment.
How do you fix starter motor pinion gear or brush holder part number needed, unsure which sub-assembly to order?
Open the Starting Motor section on page 20. The exploded view lists the Field Coil Assy, Brush Holder Assy, and Pinion Gear Assy as individual line items. Identify the failed sub-component and order only that assembly rather than the complete Starter Assy. Cross-reference the parts index for the current part number before placing the order.
How will I receive this Yanmar 3TNM72-AFS, Mower ZTR Parts Catalog?
This is a 27-page searchable PDF ready for immediate download. Works on any device, so pull it up on your phone while you're under the hood. No shipping, no waiting.
Is this Yanmar 3TNM72-AFS, Mower ZTR Parts Catalog printable?
Yes, print as many copies as you want, and there are no restrictions. Many mechanics print the section they need and bring it to the shop floor.
Document Quality
This document is a scanned PDF, but it includes an OCR layer, so you can search and copy the full text content. The text is generally readable, though it exhibits a slight fuzziness typical of scanned materials rather than being perfectly crisp. All diagrams and illustrations are raster images; however, their labels and part numbers are clear and easy to read. The pages are clean, free from scan artifacts, stains, or skewed content, and there are no notable blank or filler pages.
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