Honda G45

Honda G45The Honda G45 is a 240 cc (16.6 cu.in.) single-cylinder air-coolled 4-stroke internal combustion small gasoline engine manufactured by Honda Motor Company since 1964 for general-purpose applications.

The Honda G45 engine has a recoil starter, horizontal carburetor with butterfly valve and high voltage ignition. Cylinder bore and piston stroke are 72.0 mm (2.83 in) and 59.0 mm (3.32 in), respectively.

The G45 produced 4.5 PS (3.31 kW) at 3400 rpm of continuous rated horsepower and 6.0 PS (4.4 kW) at 4000 rpm of maximum horsepower.

General information

Engine Specifications
ModelG45
Type4-stroke, single cylinder
Displacement240 cm 3 (16.6 cu-in)
Max. horsepower6.0 PS (4.4 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 capacity6.0 L
PTO shaft rotationCounterclockwise (from PTO shaft side)

Dimensions and Weight

G45
Length, mm (in)374 (14.72)
Width, mm (in)323 (12.71)
Height, mm (in)450 (17.71)
Dry weight, kg (lb)23.0 (50.7)

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 capacity0.75 L
Ignition system
Spark plugNGK: B7-H
Spark plug gap0.6-0.7 mm (0.024-0.028 in)
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We try to use verified sources and official documentation, however, differences between sources or errors in entering information may occur. We do not provide advice on technical issues related to the engines operation or repair. We do not recommend using provided information for engines repairing engines or spare parts ordering, use only official service manuals and spare-parts catalogs.

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