The Honda G41 is a 170 cc (10.37 cu.in.) single-cylinder air-coolled 4-stroke internal combustion small gasoline engine manufactured by Honda Motor Company since 1970 for general-purpose applications.
The Honda G41 engine has a slide valve (L-head) design and camshaft driven by a single row chain driven by the crankshaft. It has a recoil starter, horizontal carburetor with butterfly valve and high voltage ignition. Cylinder bore and piston stroke were 66.0 mm and 50.0 mm, respectively.
The G41 produced 3.3 PS (2.42 kW) at 3600 rpm of continuous rated horsepower and 4.5 PS (3.31 kW) at 4000 rpm of maximum horsepower.
General information
| Engine Specifications | |
| Model | G41 |
| Type | 4-stroke, side valve type (L-head), single cylinder |
| Displacement | 170 cm 3 (10.37 cu-in) |
| Max. horsepower | 4.5 PS (3.31 kW) at 4000 rpm |
| Max. torque | – |
| Carburetor | Horizontal, butterfly valve |
| Cooling system | Forced-air |
| Ignition system | High voltage ignition |
| Lubricating system | Splash system |
| Starting system | Recoil starter |
| Stoping system | Ground switch |
| Fuel used | Unleaded gasoline (octane number 86 or higher) |
| Fuel tank capacity | 3.5 L |
| Fuel consumption | 300 g/HPh (0.67 lb/HPh) |
| PTO shaft rotation | Counterclockwise (from PTO shaft side) |
Dimensions and Weight
| G41 D | |
| Length, mm (in) | 415 (16.33) |
| Width, mm (in) | 318 (12.52) |
| Height, mm (in) | 405 (15.94) |
| Dry weight, kg (lb) | 16.0 (35.27) |
Maintenance data
| Engine | |
| Cylinder compression | 5.3 kg/cm2 (75 psi) |
| Valves | |
| Tappet clearance | 0.05-0.10 ± 0.02 (0.002-0.004 in) |
| Oil system | |
| Oil type | Honda 4-stroke or an equivalent |
| Recommended oil | SAE 10W-30 |
| Oil capacity | 0.8 L |
| Ignition system | |
| Spark plug | NGK: B-4H |
| Spark plug gap | 0.6-0.7 mm (0.024-0.028 in) |
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