Part of the Yanmar Parts Manuals.
An impeller swap on a 4JH4AE stalls the moment the sea water pump turns out to need more than the impeller you ordered. This parts catalog is Yanmar's own listing for the 4JH4AE diesel, publication 0CR10-M68301EN, 56 pages in English, sold as a direct PDF download, and it puts every factory part number for this engine on your bench before you open a single joint.
Each assembly gets its own section: Cylinder Block, Crankshaft & Flywheel, Piston & Connecting Rod, the Fuel Injection Pump and Governor, both cooling circuits from sea water pump to fresh water cooler, the Mixing Elbow, Clutch, Starting Motor, and the B-Type and C-Type instrument panels. Quantities are listed too, so you know the block carries five main bearings and eighteen head bolts before teardown.
Buy it once and it stays with the engine: print the pages you need, keep the file on the bench laptop, and order by number instead of by guess.
Complete the set for your 4JH4AE (Marine)
What's Inside This Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Clutch & Transmission | Clutch | |
| Fuel System | Fuel Injection Pump, Governor, Fuel Feed Pump, Fuel Injection Valve, Fuel Injection Pipe, Fuel Pipe & Fuel Strainer, Fuel Tank | |
| Cooling System | Cooling Sea Water Pump, Cooling Fresh Water Pump, Cooling Fresh Water Cooler, Cooling Sea Water Pipe, Cooling Fresh Water Pipe, Cooling Sea Water Strainer | |
| Engine | Cylinder Block, Flywheel Housing, Cylinder Head, Camshaft & Driving Gear, Crankshaft & Flywheel, Piston & Connecting Rod, Gasket Set | |
| Electrical System | Generator, V-Belt Cover & Generator Attachiment, Wire Harness & Sensor | |
| Hydraulics & 3-Point Hitch | Bilge Pump | |
| Body & Operator Station | Bonnet, Cable Support, V-Belt Cover, Instrument Panel | |
| Decals & Accessories | Tools | |
| Other Components | Gear Housing, Mounting Foot, Lub. Oil Sump, Suction Manifold, Mixing Elbow, Lub. Oil System, Lub. Oil Pipe, Oil/Water Separater, Coupling, Starting Motor |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Standard Finish Color (Packed in a can) | 4L | p. 2 |
| Standard Finish Color (Spray) | 1 piece | p. 2 |
| Cylinder Block Plug, PT1/4 quantity | 2 | p. 4 |
| Cylinder Block Plug, 30 quantity | 8 | p. 4 |
| Cylinder Head Valve Spring quantity | 8 | p. 10 |
