: 4-cylinder, 4-stroke, water-cooled, overhead camshaft (OHC).
The Isuzu is actually a 4-cylinder engine, not a 6-cylinder. The "4" at the beginning of the engine code explicitly denotes its 4-cylinder inline configuration. If you are looking for a 6-cylinder manual, you may be thinking of the 6HH1 or 6HK1 , which are frequently used in larger Isuzu F-Series trucks. isuzu 4hf1 workshop manual 6 cylinder pdf