Honda GSV190

Honda GSV190The Honda GSV190 is a small 0.19 l (187 cc, 11.4 single-cylinder air-cooled 4-stroke internal combustion gasoline engine with vertical shaft, manufactured by Honda Motor Company for general-purpose applications, such as pressure washers, lawn mowers, commercial lawn and garden, forestry and agricultural equipment.

The Honda GSV190 engine is a commercial version of GCV190. The GSV190 has cast-iron cylinder sleeve, an extra bearing, two-stage air cleaner, and OHC design. The Honda GSV190 engine has transistorized magneto ignition, horizontal type carburetor with butterfly valve and recoil starter.

Cylinder bore and piston stroke is 69 mm (2.71 in) and 50.0 mm (2.0 in), respectively. Compression ratio rating is 8.5:1. The Honda GSV190 produces 4.8 kW (6.5 HP) at 3,600 rpm of maximum horsepower and 3.8 kW (5.1 HP) at 3,600 rpm of net power output. The torque is 11.3 Nm (1.15 kg·m, 8.3 ft·lb) at 2,500 rpm.

General information

Engine Specifications
Model GSV190
Type 4-stroke, OHС, single cylinder
Displacement 187 cm 3 (11.4 cu-in)
Max. horsepower 6.5 HP (4.8 kW) at 3,600 rpm
Max. torque (crank PTO) 11.3 Nm (1.15 kg·m, 8.3 ft·lb) at 2,500 rpm
Carburetor Horizontal type, butterfly valve
Cooling system Forced-air
Ignition system Transistorized magneto ignition
Lubricating system Splash
Starting system Recoil starter
Stoping system Ignition primary circuit ground
Fuel used Unleaded gasoline (octane number 86 or higher)
Fuel tank capacity 0.93 l (0.98 US. qts)
Fuel consumption 230 g/HPh
PTO shaft rotation Counterclockwise (from PTO shaft side)

Dimensions and Weight

GSV190 Type N1
Length, mm (in) 370.5 (14.6)
Width, mm (in) 342.5 (13.5)
Height, mm (in) 368 (14.5)
Dry weight, kg (lb) 11.2 (24.7)
Operating weight, kg (lb) 12.5 (27.6)

Cylinder Block and Head

Cylinder block
Compression ratio: 8.5:1
Bore x Stroke 69 mm X 50 mm (2.71 x 1.97 in)
Sleeve internal diameter 69.00 mm (2.7165 in)
Piston skirt outer diameter 68.985 mm (2.7159 in)
Number of piston rings (compression / oil): 2 / 1
Ring side clearance Top 0.035-0.065 mm (0.0013-0.0026 in)
Second 0.015-0.049 mm (0.0006-0.0019 in)
Ring end gap Top 0.20-0.35 mm (0.008-0.014 in)
Second 0.30-0.45 mm (0.012-0.018 in)
Oil 0.15-0.35 mm (0.006-0.014 in)
Ring width Top/second 1.5 mm (0.06 in)
Oil 2.5 mm (0.10 in)
Connecting rod small end ID 13.005 mm (0.512 in)
Connecting rod big end ID 30.02 mm (1.1819 in)
Crankpin outer diameter 29.980 mm (1.1803 in)
Main journal outer diameter PTO side 27.993 mm (1.1021 in)
Flywheel side 25.393 mm (0.9997 in)
Cylinder Head
Warpage (limit) 0.10 mm (0.004 in)
Valve Arrangement: OHC
Valves: 2
Stem outer diameter (standard): INTAKE 5.480 mm (0.216 in)
EXHAUST 5.440 mm (0.214 in)
Guide internal diameter INTAKE / EXHAUST 5.5 mm (0.2165 in)
Spring free length 34.0 mm (1.34 in)
Valve head diameter: INTAKE 25.0 mm (0.98 in)
EXHAUST 24.0 mm (0.94 in)

Tightening torque specs

Tightening torque specs
Oil pan bolt 12 Nm; 1.2 kg·m; 8.6 ft·lb
Connecting rod bolt 12 Nm; 1.2 kg·m; 8.6 ft·lb
Valve adjusting lock nut 8 Nm; 0.8 kg·m; 5.8 ft·lb
Cylinder head cover bolt 12 Nm; 1.2 kg·m; 8.6 ft·lb
Oil drain plug bolt 24 Nm; 2.4 kg·m; 17 ft·lb
Flywheel nut 75 Nm; 7.6 kg·m; 55 ft·lb
Governor arm nut 10 Nm; 1.0 kg·m; 7 ft·lb
Muffler bolt 12 Nm; 1.2 kg·m; 8.6 ft·lb
Recoil starter nut 8.5 Nm; 0.85 kg·m; 6.1 ft·lb
Fan cover stud bolt 12 Nm; 1.2 kg·m; 8.6 ft·lb
Spark plug 20 Nm; 2.0 kg·m; 14 ft·lb

Service Information

Maximum speed 3,100 ± 150 rpm
Idle speed 1,700 ± 150 rpm
Cylinder compression 5.0 kg/cm2 (71 psi) at 600 rpm
Valve clearance
Intake valve 0.15 ± 0.04 (0.006 ± 0.002)
Exhaust valve 0.20 ± 0.04 (0.008 ± 0.002)
Oil system
Oil type Honda 4-stroke or an equivalent (SE or SF)
Recommended oil SAE 10W-30
Oil capacity 0.55 l (0.58 US.qt.)
Ignition system
Ignition timing 20° B.T.D.C.
Spark plug NGK: BPR6ES
Spark plug gap 0.7-0.8 mm (0.028-0.031 in)
Primary ignition coil resistance 1.0-1.2 kΩ
Secondary ignition coil resistance 10.6-12.8 kΩ
Ignition coil air gap 0.2-0.6 mm (0.008-0.024 in)
Main jet #70
Float height 9.2 mm (0.36 in)
Pilot screw opening 1-5/8 turns out
Author: Sergei Wers
About: Co-founder and CEO of a multi-brand auto repair shop (engine repair, chassis repair, body repair and painting) for over 15 years. I have been developing internet sites with technical specifications for more than seven years.

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  1. Estou interessado na compra de uma destas máquinas, gcv 170 mas preciso saber quais as suas reais capacidades, pois tenho dúvidas.
    Tenho uma Wusqvarn modelo R52S com 2,4 kw e 2950 rpm.
    Que me pode dar esta máquina emcomparação com a que tenho?

  2. Good day, I’m just asking, because we are looking for a mower engine, vertical motor 190cc or higher than that. Thankyou!

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