Honda GXV140

Honda GXV140The Honda GXV140 is a 135 cc (8.2 cu-in) single-cylinder air-cooled four-stroke internal combustion small gasoline engine with vertical shaft manufactured by Honda Motor Company for general-purpose applications.

The Honda GXV140 engine has an OHV (overhead valve) design; horizontal type carburetor with butterfly valve; centrifugal mechanical governor; heavy-duty recoil starter and CDI (Capacitor Discharge Ignition) system.

The cylinder bore is 64.0 mm (2.5 in) and the piston stroke is 42.0 mm (1.7 in), compression ratio rating is 8.0:1. The GXV140 engine produced 5.0 HP (3.7 kW) of horsepower at 3,600 rpm and 10.3 Nm (1.05 kg·m, 7.6 ft·lb) of torque at 2,500 rpm.

General information

Engine Specifications
Model GXV140
Type 4-stroke, OHV, single cylinder
Displacement 135 cm 3 (8.2 cu-in)
Max. horsepower 5.0 HP (3.7 kW) at 3,600 rpm
Max. torque (crank PTO) 10.3 Nm (1.05 kg·m, 7.6 ft·lb) at 2,700 rpm
Carburetor Horizontal type, butterfly valve
Cooling system Forced-air
Ignition system CDI
Lubricating system Forced splash
Starting system Recoil starter
Stoping system Ignition primary circuit ground
Fuel used Unleaded gasoline (octane number 86 or higher)
Fuel tank capacity 1.0 L (0.26 US qt)
Fuel consumption 250 g/HPh
PTO shaft rotation Counterclockwise (from PTO shaft side)

Cylinder Block and Head

Cylinder block
Compression ratio: 8.0:1
Bore x Stroke 64 X 42 mm (2.5 x 1.7 in)
Sleeve internal diameter 64.00 mm (2.52 in)
Piston skirt outer diameter 63.985 mm (2.5190 in)
Number of piston rings (compression / oil): 2 / 1
Ring side clearance Top 0.015-0.045 mm (0.0006-0.0018 in)
Second 0.015-0.045 mm (0.0006-0.0018 in)
Ring end gap Top/Second 0.20-0.40 mm (0.008-0.016 in)
Ring width Top/Second 1.5 mm (0.06 in)
Connecting rod small end ID 13.005 mm (0.5120 in)
Connecting rod big end ID 26.02 mm (1.024 in)
Piston pin outer diameter 13.0 mm (0.5118 in)
Crankshaft crank pin outer diameter 25.98 mm (1.023 in)
Cylinder Head
Warpage (limit) 0.10 mm (0.004 in)
Valve Arrangement: OHV
Valves: 2
Stem outer diameter (standard): INTAKE 5.480 mm (0.216 in)
EXHAUST 5.440 mm (0.214 in)
Valve spring free length: 30.5 mm (1.2007 in)
Camshaft outer diameter: 13.984 mm (0.5506 in)
Cam height: INTAKE 27.70 mm (1.09 in)
EXHAUST 27.75 mm (1.093 in)

Tightening torque specs

Tightening torque specs
Connecting rod lower cap 12 Nm; 1.2 kg·m; 9 ft·lb
Cylinder head bolt 24 Nm; 2.4 kg·m; 17 ft·lb
Flywheel nut 52 Nm; 5.2 kg·m; 38 ft·lb
Pivot adjusting nut 10 Nm; 1.0 kg·m; 7 ft·lb
Pivot bolt 24 Nm; 2.4 kg·m; 17 ft·lb
Oil drain bolt 18 Nm; 1.8 kg·m; 13 ft·lb
Oil pan bolt 12 Nm; 1.2 kg·m; 9 ft·lb
Standard torque values
Bolt, nut (5 mm) 5.5 Nm; 0.55 kg·m; 4.0 ft·lb
Bolt, nut (6 mm) 10 Nm; 1.0 kg·m; 7 ft·lb
Bolt, nut (8 mm) 24 Nm; 2.4 kg·m; 17 ft·lb
Bolt, nut (10 mm) 37.5 Nm; 3.75 kg·m; 27 ft·lb
Bolt, nut (12 mm) 55 Nm; 5.5 kg·m; 40 ft·lb

Service Information

Maximum speed 3,100 ± 100 rpm
Idle speed 2,100 ± 150 rpm
Cylinder compression 6.0-8.5 kg/cm2 at 600 rpm
Valve clearance
Intake valve clearance 0.15±0.02 mm (0.006±0.001 in)
Exhaust valve clearance 0.20±0.02 mm (0.008±0.001 in)
Oil system
Oil type Honda 4-stroke or an equivalent (SE or SF)
Recommended oil SAE 10W-30
Oil capacity 0.6 L (0.63 US. qt, 0.53 Imp. qt.)
Main jet #60
Float height 12.2-15.2 mm (0.48-0.60 in)
Pilot screw opening 1/2 turns out
Ignition system
Ignition timing 25° B.T.D.C.
Spark plug NGK: BP5ES, BPR5ES
Spark plug gap 0.7-0.8 mm (0.028-0.031 in)
ATTENTION! Dear visitors, this site is not a trading platform, an official dealer or a spare parts supplier, so we do not have any price lists or spare parts catalogs. We are an information portal and provide the technical specifications of gasoline and diesel engines.

We try to use verified sources and official documentation, however, differences between sources or errors in entering information may occur. We do not provide advice on technical issues related to the engines operation or repair. We do not recommend using provided information for engines repairing engines or spare parts ordering, use only official service manuals and spare-parts catalogs.


  1. Looking for something more? AliExpress carries many mower shaft related products, including crankshaft, grass mower, engine for cultivator, lawn mower motor, m, for grass trimmer, adapter for shaft, shaft trimmer, trimmer, grass mower, grass mower parts, hand mower, engine for cultivator, ds ll, coupler stepper motor, adapter for shaft, electr guitar, crankshaft tool, brush cutter mitsubishi, hedg trimmer. Quality service and professional assistance is provided when you shop with AliExpress, so don’t wait to take advantage of our prices on these and other items!

Leave a Reply

Your email address will not be published.