The Honda G35 is a 144 cc (8.79 cu-in) single-cylinder, air-cooled, four-stroke cycle, internal combustion small gasoline motor manufactured by Honda Motor Company.
The Honda G35 engine has a slide valve (L-head) design and camshaft driven by a single row chain driven by the crankshaft. It has a recoil starter, horizontal carburetor with butterfly valve and high voltage ignition.
Bore is 64.0 mm (2.52 in) and stroke is 45.0 mm (1.77 in). The G35 produced 3.54 PS (3.5 HP, 2.61 kW) at 4,000 rpm and 6.5 Nm (0.66 kg·m; 4.8 lbf·ft) at 3,000 rpm and compression ratio rating is 6.4:1.
General information
Engine Specifications
Model
G35
Type
4-stroke, side valve type (L-head), single cylinder
Displacement
144 cm 3 (8.79 cu-in)
Max. horsepower
3.54 PS (3.5 HP, 2.61 kW) at 4,000 rpm
Max. torque
6.5 Nm (0.66 kg·m; 4.8 lbf·ft) at 3,000 rpm
Carburetor
Horizontal, butterfly valve
Cooling system
Forced-air
Ignition system
High voltage ignition
Lubricating system
Splash type
Starting system
Recoil starter or rope starting
Stoping system
Ground switch
Fuel used
Unleaded gasoline (octane number 86 or higher)
Fuel tank capacity
2.5 liters (2.64 US.qts, 2.2 Imp. qts)
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
64.0 x 45.0 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)
Piston pin outer diameter
15.00 mm (0.5906 in)
Piston ring gap
0.2 mm (0.008 in)
Ring side clearance
0.01 mm (0.0004 in)
Crankshaft pin puter diameter
25.980 mm (1.0228 in)
Cylinder Head
Warpage (max)
0.2 mm (0.01 in)
Valve Arrangement:
Side valve type
Valves:
2
Valve stem outer diameter (INTAKE):
6.970 mm (0.2744 in)
Valve stem outer diameter (EXHAUST):
6.925 mm (0.2726 in)
Valve guide outer diameter
7.000 mm (0.2756 in)
Cam height:
17.03 mm (0.670 in)
Camshaft outer diameter:
5.020 mm (0.1976 in)
Maintenance data
Engine
Cylinder compression
5.3 kg/cm2 (75 psi)
Valves
Tappet clearance
0.05-0.10 ± 0.02 (0.002-0.004 in)
Oil system
Oil type
Honda 4-stroke or an equivalent
Recommended oil
SAE 10W-30
Oil capacity
0.6 liters (0.63 US.qts, 0.53 Imp. qts)
Ignition system
Ignition timing
20° ± 3° B.T.D.C (Fixed)
Spark plug
NGK: BR6HS, B6HS
Spark plug gap
0.6-0.7 mm (0.024-0.028 in)
Tightening torque specs
Tightening torque specs
Carburetor (6 mm nut)
8-12 Nm; 0.8-1.2 kg·m; 5.8-8.7 ft·lb
Flywheel (14 mm nut)
60-65 Nm; 6.0-6.5 kg·m; 43.4-47 ft·lb
Cylinder Head (8 x 35 mm flange bolt)
20-28 Nm; 2.0-2.8 kg·m; 14.5-20.2 ft·lb
Connecting Rod (6 x 37 mm bolt)
9-11 Nm; 0.9-1.1 kg·m; 6.5-8.0 ft·lb
Author:Sergei WersAbout: 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.
The Honda G35 is a 144 cc (8.79 cu-in) single-cylinder, air-cooled, four-stroke cycle, internal combustion small gasoline motor manufactured by Honda Motor Company. 
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