The Rato RV340 is a 340 cc (20.75 cu-in) single-cylinder air-cooled 4-stroke internal combustion general-purpose gasoline engine with vertical shaft, manufactured by Chongqing RATO Holding (Group) CO., LTD.
The Rato RV340 engine has a single-cylinder with a vertical PTO-shaft; an overhead valve (OHV) design; flat suction valve carburetor; dual element air filtration system; Capacitance Discharge Type ignition system (CDI); centrifugal mechanical governor system and electric starter.
The Rato RV340 motor has an 88.0 mm (3.46 in) cylinder bore and 56.0 mm (2.20 in) piston stroke with a compression ratio of 8.5:1. It produced 13.0 HP at 3,600 rpm of horsepower and 11 N·m (1.12 kg·m, 8.11 ft·lb) at 2,500 rpm of torque.
|Type||4-stroke, OHV, single cylinder|
|Displacement||340 cm 3 (20.75 cu-in)|
|Max. horsepower||13.0 HP at 3,600 rpm|
|Max. torque (crank PTO)||11 N·m (1.12 kg·m, 8.11 ft·lb) at 2,500 rpm|
|Carburetor||Flat suction valve carburetor|
|Ignition system||Capacitance Discharge Type (CDI)|
|Starting system||Recoil / electric starter|
|Stoping system||Ignition primary circuit ground|
|Fuel used||Unleaded gasoline (octane number 86 or higher)|
|PTO shaft rotation||Counterclockwise (from PTO shaft side)|
|Oil type||4-stroke or an equivalent (SJ)|
|Recommended oil||SAE 10W-30, 15W-40|
|Oil capacity||1.1 L|
|Spark plug||NGK: BPR6ES|
|Spark plug gap||0.7-0.8 mm (0.028-0.031 in)|