Honda G41

Honda G41The 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
ModelG41
Type4-stroke, side valve type (L-head), single cylinder
Displacement170 cm 3 (10.37 cu-in)
Max. horsepower4.5 PS (3.31 kW) at 4000 rpm
Max. torque
CarburetorHorizontal, butterfly valve
Cooling systemForced-air
Ignition systemHigh voltage ignition
Lubricating systemSplash system
Starting systemRecoil starter
Stoping systemGround switch
Fuel usedUnleaded gasoline (octane number 86 or higher)
Fuel tank capacity3.5 L
Fuel consumption300 g/HPh (0.67 lb/HPh)
PTO shaft rotationCounterclockwise (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 compression5.3 kg/cm2 (75 psi)
Valves
Tappet clearance0.05-0.10 ± 0.02 (0.002-0.004 in)
Oil system
Oil typeHonda 4-stroke or an equivalent
Recommended oilSAE 10W-30
Oil capacity0.8 L
Ignition system
Spark plugNGK: B-4H
Spark plug gap0.6-0.7 mm (0.024-0.028 in)
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