Part of the Yanmar Parts Manuals.
Cylinder block to short block, this Yanmar parts catalog walks the 3TNM72-AFS diesel end to end: gear housing, mounting flange and oil sump, cylinder head, camshaft, crankshaft and pistons, the lube oil and cooling water systems, injection pump, governor, injectors, fuel filter, starting motor and generator. It is Yanmar publication 0CW10-G61100, the factory catalog for this three-cylinder engine as fitted to ZTR mowers, 27 pages in a small, quick-loading PDF.
Anyone who has pulled a leaking water pump off a mower engine knows the guessing game that follows: which gasket, which O-ring, whether that fastener is a bolt or a stud. The exploded views here settle it with Yanmar part numbers, so the order you place is the order that fits.
Download it, print the page you need, and get the engine back together before the grass gets ahead of you.
What's Inside This 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 |
| 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 |
