Honda GXV610 K1

Honda GXV610 K1The Honda GXV610 K1 is a 0.6 L (614 cc, 37.5 cu·in) natural aspirated V-twin four-stroke air-cooled internal combustion small gasoline engine with a vertical shaft, manufactured by Honda Motor Company for general-purpose applications.

Cylinder bore and piston stroke are 77.0 mm (3.03 in) and 66.0 mm (2.6 in), respectively. The compression ratio rating is 8.3:1.

The Honda GXV610 K1 engine produced 18.2 PS (13.4 kW; 18.0 HP) at 3,600 rpm of maximum output power and 43.1 N·m (4.4 kg·m, 31.8 ft·lb) at 2,500 rpm of peak torque.

The Honda GXV610 K1 features:

  • OHV design
  • Transistorized magneto ignition system
  • Horizontal carburetor with butterfly valve
  • Centrifugal govervor
  • Forced lubrication system
  • Forced air cooling system
  • Recoil and electric starter, or electric starter only

General information

Engine Specifications
Engine model GXV610 K1
Engine type 4-stroke, OHV, V-twin
Displacement 614 cm3, (37.5 cu·in)
Max. horsepower 18.2 PS (13.4 kW; 18.0 HP) at 3,600 rpm
Max. torque 43.1 N·m (4.4 kg·m, 31.8 ft·lb) at 2,500 rpm
Cooling system Forced air
Air cleaner Dual element type
Lubricating system Forced lubrication
Ignition system Transistorized magneto ignition
Fuel system Horizontal carburetor with butterfly valve
Fuel consumption 230 g/HPh
Fuel tank capacity
Fuel used Unleaded gasoline (octane number 86 or higher)
Starting system Recoil and electric starter, or electric starter only
Stoping system Ignition primary circuit ground
Governor Centrifugal govervor
PTO shaft rotation Counterclockwise (from PTO shaft side)
Dimensions (L x W X H) 459 x 457 x 431 mm (18.1 x 18 x 17 in)
Dry weight 43.0 kg (94.8 lbs)

Cylinder Block and Head

Cylinder block
Compression ratio: 8.3:1
Cylinder bore: 77.0 mm (3.03 in)
Piston stroke: 66.0 mm (2.6 in)
Cylinder internal diameter (standard): 76.985 mm (3.0309 in)
Number of piston rings (compression / oil): 2/1
Connecting rod small end diameter (standard): 18.005 mm (0.7089 in)
Piston pin diameter: 18.000 mm (0.7087 in)
Side clearance (Top): 0.030-0.060 mm (0.0012-0.0024 in)
Side clearance (Second): 0.030-0.060 mm (0.0012-0.0024 in)
Ring end gap (Top): 0.200-0.400 mm (0.0079-0.0157 in)
Ring end gap (Second): 0.200-0.400 mm (0.0079-0.0157 in)
Ring width (Top): 1.990 mm (0.0783 in)
Ring width (Second): 1.990 mm (0.0783 in)
Crankshaft main journal diameter: 38.000 mm (1.4961 in)
Crankpin journal diameter: 39.995 mm (1.5746 in)
Cylinder head
Valve arrangement: OHV
Valves: 2 (4 valves in total)
Valve steam diameter (INTAKE): 6.590 mm (0.2594 in)
Valve steam diameter (EXHAUST): 6.550 mm (0.2579 in)
Valve spring free length (INTAKE): 39.0 mm (1.5354 in)
Valve spring free length (EXHAUST): 39.0 mm (1.5354 in)
Camshaft lobe height (INTAKE): 29.865 mm (1.1758 in)
Camshaft lobe height (EXHAUST): 29.865 mm (1.1758 in)
Camshaft journal diameter : 16.985 mm (0.6687 in)

Tightening torque specs

Tightening torque specs
Connecting rod bolt 12 Nm; 1.2 kg·m; 9 ft·lb
Cylinder head bolt 34 Nm; 3.5 kg·m; 25 ft·lb
Socket bolt 27 Nm; 2.7 kg·m; 20 ft·lb
Flywheel nut 196 Nm; 20.0 kg·m; 145 ft·lb
Pivot bolt 24 Nm; 2.4 kg·m; 17 ft·lb
Pivot adjusting nut 10 Nm; 1.0 kg·m; 7 ft·lb
Cylinder head cover bolt 9 Nm; 0.9 kg·m; 6.5 ft·lb
Oil level switch joint nut 10 Nm; 1.0 kg·m; 7 ft·lb
Oil drain bolt 39 Nm; 4.0 kg·m; 29 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) 22 Nm; 2.2 kg·m; 16 ft·lb
Bolt, nut (10 mm) 34 Nm; 3.5 kg·m; 25 ft·lb
Bolt, nut (12 mm) 54 Nm; 5.5 kg·m; 40 ft·lb
Service Data
Engine
Maximum speed: 3,250-3,550 rpm rpm
Idle speed: 1,250-1,550 rpm rpm
Cylinder compression: 6.0-8.0 kg/cm2 (85-114 psi) at 500 rpm
Oil system
Lubrication system: Forced lubrication
Oil type: SAE 10W-30
Recommended oil: Honda 4-stroke or an equivalent (SJ or later)
Oil capacity: Without oil filter: 1.7 L (1.8 US. qt, 1.5 Imp. qt.)
With oil filter: 2.2 L (2.3 US. qt, 1.9 Imp. qt.)
Fuel system
Type: Horizontal carburetor with butterfly valve
Main jet: #108
Float height: 14.0 mm (0.5512 in)
Pilot screw opening: 2-5/8 turns out
Ignition system
Type: Transistorized magneto ignition
Spark plug: NGK: ZGR5A DENSO: J16CR-U
Spark plug gap: 0.7-0.8 mm (0.028-0.031 in)
Ignition coil air gap 0.4±0.2 mm (0.016±0.008)

Applications

Manufacturer or Brand Models
Lawn tractors
Honda HF2218

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