Honda GV35

Honda GV35The Honda GV35 is a 144 cc (8.8 single-cylinder air-coolled four-stroke internal combustion small gasoline engine with vertical shaft manufactured by Honda Motor Company.

This engine has a side-valve design with camshaft driven by a timing chain. It has a recoil starter, horizontal butterfly type carburetor, flywheel magneto ignition system.

The cylinder bore is 64.0 mm (2.5 in) and the piston stroke is 45.0 mm (1.8 in). Compression ratio rating is 6.4:1. The Honda GV35 motor produced 3.5 HP (2.6 kW) at 3,600 rpm of maximum horsepower, 2.0 HP (1.5 kW) at 3,000 rpm of rated power and at 6.6 Nm (0.67 kg·m, 4.9 ft·lb) of torque.

General information

Engine Specifications
Model GV35
Type 4-stroke, side valve type (L-head), single cylinder
Displacement 144 cm 3 (8.79 cu-in)
Max. horsepower 3.5 HP (2.6 kW) at 3,600 rpm
Max. torque 6.6 Nm (0.67 kg·m, 4.9 ft·lb)
Carburetor Horizontal, butterfly valve
Cooling system Forced-air
Ignition system High voltage ignition
Lubricating system Splash system
Starting system Recoil starter
Stoping system Ground switch
Fuel used Unleaded gasoline (octane number 86 or higher)
Fuel tank capacity 1.9 L (0.5 US gal, 0.4 Imp gal)
Fuel consumption 310 g/HPh (0.68 lb/HPh)
PTO shaft rotation Counterclockwise (from PTO shaft side)

Cylinder Block and Head

Cylinder block
Compression ratio: 6.4:1
Bore x Stroke 64 x 45 mm (2.52 x 1.77 in.)
Sleeve internal diameter 64.00 mm (2.5197 in)
Piston skirt outer diameter 63.96 mm (2.518 in)
Cylinder Head
Warpage (max) 0.2 mm (0.01 in)
Valve Arrangement: Side valve type
Valves: 2


Idle speed 1,700 rpm
Cylinder compression 5.3 kg/cm2 (75 psi)
Tappet clearance 0.05-0.10 (0.002-0.004 in)
Oil system
Oil type Honda 4-stroke or an equivalent (SE)
Recommended oil SAE 10W-30 or 10W-40
Oil capacity 0.7 L (1.5 US pt, 1.2 lmp pt)
Ignition system
Ignition timing 20° ± 3° B.T.D.C
Spark plug NGK: BR-6HS, B-6HS
Spark plug gap 0.6-0.7 mm (0.024-0.028 in)
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