Honda F450

Honda F450The Honda F450 tiller is equipped with small general-purpose Honda G150 engine (144 cc, 8.8 cu-in); gear type transmission and belt main clutch. The engine uses a CDI (contact breaker point) or flywheel transistorized magneto ignition, a horizontal type carburetor and recoil starter.

The Honda G150 is a single-cylinder air-cooled 4-stroke internal combustion engine. The G150 engine a compression ratio rating is 6.5:1, cylinder bore and the piston stroke are 64.0 mm (2.52 in) and 45.0 mm (1.77 in), respectively.

The G150 engine produces 3.5 PS (2.6 kW; 3.5 HP) at 3,600 rpm of maximum horsepower and 7.1 N·m (0.7 kg·m, 5.2 ft·lb) at 3,000 rpm of maximum torque for models with CDI ignition system or 3.8 PS (2.8 kW; 3.8 HP) at 3,600 rpm of peak power and 7.4 N·m (0.8 kg·m, 5.5 ft·lb) at 3,000 rpm of maximum torque for models with transistorized magneto ignition system.

General information

Tiller, Rotavator, Cultivator Specifications
Model Honda F450
Dimensions (L x W x H): F450F,D,SP:1,425 x 620 x 1,195 mm (56.1 x 24.4 x 47.0 in)
F450G: 1,520 x 620 x 1,195 mm (59.8 x 24.4 x 47.0 in)
Dry weight F450F: 43.0 kg (94.8 lbs)
F450D: 49.0 kg (108.0 lbs)
F450SP: 43.0 kg (94.8 lbs)
F450G: 51.0 kg (112.5 lbs)
Fuel tank capacity 1.7 L (0.45 US gal, 0.37 Imp gal)
Engine
Engine model Honda G150
Displacement 144 cm3 (8.8 cu-in)
Bore x stroke 64.0 x 45.0 mm (2.52 x 1.77 in)
Max. horsepower 3.5 PS (2.6 kW; 3.5 HP) at 3,600 rpm (CDI)
3.8 PS (2.8 kW; 3.8 HP) at 3,600 rpm (Transistorized magneto)
Max. torque 7.1 N·m (0.7 kg·m, 5.2 ft·lb) at 3,000 rpm (CDI)
7.4 N·m (0.8 kg·m, 5.5 ft·lb) at 3,000 rpm (Transistorized magneto)
Carburetor Horizontal type, butterfly valve
Cooling system Forced-air
Ignition system CDI or transistorized magneto ignition (F450G)
Lubricating system Splash
Starting system Recoil starter
Stoping system Ignition primary circuit ground
Fuel used Unleaded gasoline (octane number 86 or higher)
Transmission and clutch
Main clutch Belt and tension
Side clutch Mechanical (ball type)
Transmission gear ratio 1st gear: 29
1nd gear: 20
Rear gear: 41.6
Pulley ratio Low: 1.57
High: 0.82
Transmission oil capacity 1.3 liters (1.37 US.qts, 1.14 Imp. qts)
PTO (except for F450SP type)
Shaft RPM (at engine 1,800 rpm) Low: 1,152 rpm
High: 2,210 rpm
Shaft diameter 18.0 x 15.0 mm (0.71 x 0.60 in)
Direction of rotation Clockwise

Maintenance data

Engine
Maximum speed 3,850 ± 150 rpm
Idle speed 1,400 ± 150 rpm
Cylinder compression 6.0 kg/cm2 (85 psi)
Adjust valve clearance
Intake valve 0.08-0.16 mm (0.0031-0.0063 in)
Exhaust valve 0.16-0.24 mm (0.0063-0.0094 in)
Oil system
Oil type Honda 4-stroke “SE”
Recommended oil 10W-40
Oil capacity 0.7 L (1.5 US pt. 1.2 Imp. pt.)
Transmission oil capacity 1.3 liters (1.37 US.qts, 1.14 Imp. qts)
Ignition system
Spark plug CDI: NGK BPR4HS-10, ND W14FPR-UL10
Transistorized magneto: NGK BR4HS, ND W14FR-U
Spark plug gap 0.6-0.7 mm (0.024-0.028 in)
Spark plug cap resistance 10 kΩ
ATTENTION! Dear visitors, this is an informational database of technical specifications, we are not a parts supplier or a marketplace.

We try to use official documentation and verify the published data, but errors may occur. In addition, specifications of machinery and equipment may vary depending on markets and modifications. We do not recommend the use of this data for spare parts or repairs. Use official service manuals or parts catalogs for your product.

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