The Toro GM4500 runs the 88 mm Yanmar three-cylinder, and we stock it in both fuel systems - mechanical injection and electronic common rail, new surplus and rebuilt. Which one you need comes down to what is on your data plate, not what is on the machine badge.
The Toro Groundsmaster 4500 is a commercial rotary mower used on golf courses, sports fields, parks and municipal grounds. It is powered by the Yanmar 88 mm-bore 3-cylinder direct-injection diesel.
ENGINE SPECIFICATION. Three cylinder, four cycle, liquid cooled, vertical in-line. Direct injection, naturally aspirated. Bore and stroke 88 x 90 mm. Displacement 1.642 L (100.2 cu in). Around 36 hp at 3000 rpm at full speed, less in machines governed lower. Dry weight approximately 341 lb (154 kg). Rotation counterclockwise viewed from the flywheel end. Engine as fitted to this machine: 3TNV88 / 3TNE88. Production years: 2005-2018. Rated output in this machine: approximately approx. 36 hp.
WHAT WE FIT TO YOUR MACHINE.
On a commercial mower the engine runs at sustained governed rpm driving the deck and drive system. Pulleys, brackets, oil pan and cooling package are external and carry across from your old engine.
MECHANICAL OR COMMON RAIL - THIS IS THE ONE THING YOU MUST MATCH.
The Yanmar 3TNV88 comes in two fuel systems and they are not interchangeable. MECHANICAL INJECTION uses a mechanical pump and governor, with no ECU or sensors - this is what most machines in the field run, and it is our standard stock. E