Honda G41

Honda G41The Honda G41 is a 170 cc (10.37 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

Cylinder compression 5.3 kg/cm2 (75 psi)
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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