The Rato RS100 is a 98 cc (6.0 cu-in) single-cylinder air-cooled 4-stroke internal combustion general-purpose gasoline engine with horizontal shaft manufactured by Chongqing RATO Holding (Group) CO., LTD.
The Rato RS100 engine features a cast-iron cylinder liner for low oil consumption and consistent, reliable power output. Transistorized CDI ignition ensures easy reliable starting and low emissions.
The RS100 cylinder bore is 52.0 mm (2.05 in) and piston stroke is 46.0 mm (1.81 in), compression ratio rating is 5.6:1. The Rato RS100 produces 3.0 HP at 3,600 rpm of power and 3.2 Nm (0.33 kg·m, 2.36 ft·lb) at 2,500 rpm of net torque.
General information
| Engine Specifications | |
| Model | RS100 |
| Type | 4-stroke, OHV, single cylinder |
| Displacement | 98 cm3 (6.0 cu-in) |
| Max. horsepower | 3.0 HP at 3,600 rpm |
| Max. torque (crank PTO) | 3.2 Nm (0.33 kg·m, 2.36 ft·lb) at 2,500 rpm |
| Carburetor | Flat suction valve carburetor |
| Cooling system | Forced-air |
| Ignition system | Transitorised CDI |
| Lubricating system | Splash |
| Starting system | Recoil starter |
| Stoping system | Ignition primary circuit ground |
| Fuel used | Unleaded gasoline (octane number 86 or higher) |
| PTO shaft rotation | Counterclockwise (from PTO shaft side) |
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