Part of the Yanmar Parts Manuals.
From the cylinder block casting to the starting motor pinion, this Yanmar parts catalog (publication Y00B5881) breaks the 3TNA72L-UBA and 3TNA72L-UBB down into sixteen exploded sections, one system per spread: Crankshaft & Piston, Fuel Injection Device, Governor, Lub. Oil System, Cooling Water System, and the rest.
Anyone who has tried to order bearings or a delivery valve for a small Yanmar triple by guesswork knows how that ends: the wrong part in the mailbox and the engine still apart on the stand. This catalog pins each component to its factory part number, so the head gasket, thermostat, or injection nozzle you order is the one built for this engine, whichever equipment it happens to live in.
It is a 34-page bookmarked PDF, 0.55 MB, in English. Download it once, print the pages you need, and it is yours for the life of the rebuild.
Other edition of this manual
What's Inside This Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Cylinder Block | 3-4 | Gear Housing Assy, Housing Cover Assy, Oil Seal HTC456208, Knock Pipe, Cover, Gasket, Lub. Oil Supply Cap, Blind Cover |
| Gear Housing | 5-6 | Lub. Oil Sump Assy, Oil Sump Spacer, Oil Seal Case Assy, Oil Seal, Flywheel Housing, Flywheel Cover Cap |
| Flywheel Housing & Lub. Oil Sump | 7-8 | Cylinder Head Assy, Suction Valve, Exhaust Valve, Valve Spring, Spring Retainer, Valve Stem Seal, Valve Cap, Nozzle Protector |
| Cylinder Head & Bonnet | 9-10 | Air Cleaner Support, Support Felt, Air Cleaner, Case, Air Cleaner Element, Dust Pan, Retainer, Air Intake Pipe |
| Suc. Manifold & Air Cleaner | 11-12 | Gasket, Silencer, Silencer Stay, Exhaust Manifold, Exhaust Manifold Gasket |
| Exh. Manifold & Silencer | 13-14 | Camshaft Assy, Camshaft Gear, Thrust Bearing, Push Rod, Tappet, Fuel Cam Bearing, Fuel Injection Pump Cam Assy, Idle Gear Retainer |
| Camshaft & Driving Gear | 15-16 | Crankshaft Assy, Crankgear, V-Pulley, Flywheel Assy, Ring Gear, Piston W/ Rings, Ring Set, Piston W/ Ring |
| Crankshaft & Piston | 17-18 | Lub. Oil Pump Assy, Lub. Oil Pump Gasket, Lub. Oil Dipstick, Dipstick Guide, Oil Filter Bracket, Gasket, Lub. Oil Filter, Oil Press Valve Assy |
| Lub. Oil System | 19-20 | Cooling Water Pump Assy, Cooling Water Pump Gasket, V-Belt, Cooling Water Pump V-Pulley, Thermo Switch, Gasket, Thermostat Cover, Thermostat |
| Cooling Water System | 21-22 | Fuel Injection Pump Assy, Plunger W/ Barrel, Retainer, Plunger Spring, Delivery Valve W/ Seat, Delivery Valve Spring, Delivery Valve Holder, Delivery Gasket |
| Fuel Injection Device | 23-24 | Gasket, Fuel Feed Pump Assy, F.o Strainer Assy, Taper Valve, Taper Valve Spring, Lever, Strainer Cup, Retaining Ring |
| Fuel Pipe | 25-26 | Governor Case, Gasket, Governor Case Cover, Link Color, Link, Governor Weight Assy, Governor Sleeve, Spacer Assy |
| Governor | 27-28 | Starter 12V- .0W, Retainer, Yoke Assy, Armature Assy, Bearing, Starter Clutch, Starter Pinion, Shaft |
| Starting Motor | 29-30 | Generator, Collar, Plate Assy, Stator, Coupler, Flywheel Assy, Belt Adjuster |
| Generator | 31-32 | Flex Horn, Gasket Set, Bonnet Gasket, Exhaust Manifold Gasket, Cooling Water Pump Gasket, Liquid Gasket |
| Gasket Set (Optional) & Tool | 33-34 | Flex Horn, Gasket SET(NON-ASB.), Gasket, Bonnet, O-Ring, EXH.MANIFOLD |
