The Honda GV35 is a 144 cc (8.8 cu.in.) 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 | |
MAINTENANCE DATA
| Engine | |
| Idle speed | 1,700 rpm |
| Cylinder compression | 5.3 kg/cm2 (75 psi) |
| Valves | |
| 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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