Honda H5518

Honda H5518The Honda H5518 is a lawn tractor with small 0.64 l (635 cc, 38.7 cu-in) two-cylinder water-cooled gasoline engine Honda GX640. The Honda H5518 tractor is equipped with selective sliding 8 speeds forward and 4 speeds reverse transmission. The Honda H5518 small tractor was produced from 1991 through 1999.

The Honda GX640 develops 18.0 HP (13.2 kW) at 3,600 rpm and 46.1 Nm (4.7 kg·m, 34.0 ft·lb) of torque at 2,500 rpm. It is a liquid-cooling motor with a 76.0 mm (3.0 in) cylinder bore and a 70.0 mm (2.8 in) stroke, and 8.0:1 compression ratio. The has an OHV design with two valves per cylinder; horizontal type carburetor with a butterfly valve; C.D.I.(Capacitor Discharge Ignition) ignition system, a mechanical centrifugal governor and electric starter.

The Honda H5518 tractor used a mechanical leading-trailing shoe type brakes and pinion-and-sector four-wheel steering. The tactor has 150 mm (5.9 in.) of ground clearance. The Honda H5518 is avalible in two versions:

  • A4 type – four-wheel drive (4WD);
  • A2 type – two-wheel drive (2WD)

Honda H5518 specifications

General Specifications
ModelHonda H5518
Length2,190-2,370 mm (86.2-93.3 in)
Width1,070-1,125 mm (42.1-44.3 in)
Height1,235 mm (48.6 in)
Wheel base1,305 mm (51.4 in.)
Dry weight457.0-480.0 kg (1,008-1,058 lbs)
Front tires size20×7.0-12
Front tires pressure98 kPa (1.0 kg/cm2, 14 psi)
Rear tires size24.5×8.0-14
Rear tires pressure79 kPa (0.8 kg/cm2, 11.4 psi)
Fuel tank capacity9.0 l (2.38 US gal., 1.98 Imp gal.)
Engine modelHonda GX630
Displacement635 cm3 (38.7 cu-in)
Bore x stroke76.0 x 70.0 mm (3.0 x 2.8 in.)
Max. horsepower18.0 HP (13.2 kW) at 3,600 rpm
Max. torque46.1 Nm (4.7 kg·m, 34.0 ft·lb) at 2,500 rpm
CarburetorHorizontal type, butterfly valve
Cooling systemLiquid-cooling
Ignition systemCDI ignition
Lubricating systemForced oil by trochoid pump
Starting systemElectric starter
Stoping systemCut off the power supply to the CDI (Open)
Fuel usedUnleaded gasoline (octane number 86 or higher)
Oil typeHonda 4-stroke or an equivalent (SE or SF)
Recommended oilSAE 10W-40
Oil capacity (without filter changed)2.0 L (2.11 US qt, 1.76 Imp qt)
Oil capacity (with filter changed)2.3 L (2.43 US qt, 2.02 Imp qt)
Gear typeSelective sliding 8 speeds forward and 4 speeds reverse transmission
Gear selections8 forward, 4 reverse
Groung speeds Forward:
1 (L-1): 0.7 km/h (0.4 mph)
2 (H-1): 1.1 km/h (0.7 mph)
3 (L-2): 1.5 km/h (0.9 mph)
4 (H-2): 2.4 km/h (1.5 mph)
5 (L-3): 3.4 km/h (2.1 mph)
6 (H-3): 5.3 km/h (3.3 mph)
7 (L-4): 7.1 km/h (4.4 mph)
8 (H-4): 11.1 km/h (6.9 mph)

1 (L-R1): 0.8 km/h (0.5 mph)
2 (H-R1): 1.4 km/h (0.7 mph)
3 (H-R2): 1.8 km/h (1.1 mph)
4 (H-R2): 2.8 km/h (1.7 mph)

BrakesMechanical leading-trailing shoe type brake (rear wheels)
SteeringPinion-and-sector four-wheel steering
Hydraulic system
Working pressure90 kg/cm2 (1,280 psi)
Pump typeGear pump
Oil capacity2.0 L (2.1 US. qt)
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We try to use verified sources and official documentation, however, differences between sources or errors in entering information may occur. In addition, the characteristics may vary depending on the modification and market. We do not provide advice on technical issues related to the any operation or repair. We do not recommend using provided information for repairing or spare parts ordering, use only official service manuals and spare-parts catalogs.

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