Profile: International Dyno, Inc. specializes in offering load marine dynamometers. The International DYNO® marine dynamometer is a closed hydraulic system capable of fully loading marine outboard and sterndrive engines for diagnostic & performance tuning & testing. It features a precise adjustment of load and measurement of output are possible throughout the engine's entire RPM range. Model 4000 is a fully load most standard production outboard engines rated at 80 HP (60KW) and above. It is available with hydraulic pump hoist, adapter storage rack, and choice of any two adapters.