Honda GX200T

Honda GX200TThe Honda GX200T is a196 cc, (11.96 cu·in) natural aspirated single-cylinder four-stroke air-cooled internal combustion small gasoline engine with a horizontal shaft, manufactured by Honda Motor Company for general-purpose applications.

A 68.0 mm (2.68 in) cylinder bore and 54.0 mm (2.13 in) piston stroke give the GX200T engine a total of 196 cc of displacement. The compression ratio rating is 7.65:1 or 8.5:1.

This engine produced 6.5 PS (4.8 kW; 6.4 HP) at 3,600 rpm of horsepower and 13.2 N·m (1.3 kg·m, 9.7 ft·lb) at 2,500 rpm of torque.

The Honda GX200T features:

  • OHV design
  • Transistorized magneto ignition ignition system
  • Horizontal type carburetor with butterfly valve
  • Centrifugal governor
  • Forced splash lubrication system
  • Forced air cooling system
  • Recoil starter

General information

Engine Specifications
Engine model GX200T
Engine type 4-stroke, OHV, single-cylinder
Displacement 196 cm3, (11.96 cu·in)
Max. horsepower Crank P.T.O: 6.5 PS (4.8 kW; 6.4 HP) at 3,600 rpm
With 1/2 reduction: 6.5 PS (4.8 kW; 6.4 HP) at 1,800 rpm
With 1/6 reduction: 6.5 PS (4.8 kW; 6.4 HP) at 600 rpm
Max. torque Crank P.T.O: 13.2 N·m (1.35 kg·m, 9.8 ft·lb) at 2,500 rpm
With 1/2 reduction: 26.5 N·m (2.7 kg·m, 19.5 ft·lb) at 1,250 rpm
With 1/6 reduction: 79.5 N·m (8.1 kg·m, 58.6 ft·lb) at 420 rpm
Cooling system Forced air
Air cleaner Dual silent type,
Semi-dry type,
Oil bath type,
Cyclone type
Lubricating system Forced splash
Ignition system Transistorized magneto ignition
Fuel system Horizontal type carburetor with butterfly valve
Fuel consumption 230 g/PSh
Fuel tank capacity 3.6 L (0.95 US. gal. 0.79 Imp. gal.)
Fuel used Unleaded gasoline (octane number 86 or higher)
Starting system Recoil starter
Stoping system Ignition primary circuit ground
Governor Centrifugal governor
PTO shaft rotation Counterclockwise (from PTO shaft side)
Dimensions (L x W X H)
Dry weight

Cylinder Block and Head

Cylinder block
Compression ratio: 7.65:1 or 8.5:1
Cylinder bore: 68.0 mm (2.68 in)
Piston stroke: 54.0 mm (2.13 in)
Cylinder internal diameter (standard): 68.000 mm (2.6772 in)
Piston skirt outer diameter (standard): 67.985 mm (2.6766 in)
Number of piston rings (compression / oil): 2/1
Connecting rod big end diameter (standard): 30.020 mm (1.1819 in)
Connecting rod small end diameter (standard): 18.002 mm (0.7087 in)
Piston pin diameter: 18.000 mm (0.7087 in)
Side clearance (Top): 0.015-0.045 mm (0.0006-0.0018 in)
Side clearance (Second): 0.015-0.045 mm (0.0006-0.0018 in)
Ring end gap (Top): 0.250-0.400 mm (0.0098-0.0157 in)
Ring end gap (Second): 0.250-0.400 mm (0.0098-0.0157 in)
Ring width (Top): 1.5 mm (0.0591 in)
Ring width (Second): 1.5 mm (0.0591 in)
Crankpin journal diameter: 29.980 mm (1.1803 in)
Crankshaft center distance: 27 mm (1.065 in)
Cylinder head
Valve arrangement: OHV, gear driven
Valves: 2
Valve steam diameter (INTAKE): 5.480 mm (0.2157 in)
Valve steam diameter (EXHAUST): 5.440 mm (0.2142 in)
Valve spring free length (INTAKE): 30.5 mm (1.2008 in)
Valve spring free length (EXHAUST): 30.5 mm (1.2008 in)
Camshaft lobe height (INTAKE): 27.700 mm (1.0905 in)
Camshaft lobe height (EXHAUST): 27.750 mm (1.0925 in)
Camshaft journal diameter : 13.984 mm (0.5506 in)

Tightening torque specs

Tightening torque specs
Connecting rod bolt 12 Nm; 1.2 kg·m; 9 ft·lb
Cylinder head bolt 24 Nm; 2.4 kg·m; 17 ft·lb
Flywheel nut 75 Nm; 7.5 kg·m; 54 ft·lb
Rocker arm pivot lock nut 10 Nm; 1.0 kg·m; 7 ft·lb
Rocker arm pivot bolt 24 Nm; 2.4 kg·m; 17 ft·lb
Crankcase cover bolt 12 Nm; 1.2 kg·m; 9 ft·lb
Oil level switch joint nut 10 Nm; 1.0 kg·m; 7 ft·lb
Oil drain bolt 18 Nm; 1.8 kg·m; 13 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 Data

Engine
Maximum speed: 3,600-4,000 rpm
Idle speed: 1,250-1,550 rpm
Cylinder compression: 3.6 kg/cm2 (353 kPa; 51 psi) at 600 rpm
Valve clearance
Intake valve clearance: 0.13-0.17 mm (0.0051-0.0067 in)
Exhaust valve clearance: 0.18-0.22 mm (0.0071-0.0087 in)
Oil system
Lubrication system: Forced splash
Oil type: Honda 4-stroke or an equivalent (SE or SF)
Recommended oil: SAE 10W-30, 10W-40
Oil capacity: 0.6 L (0.63 US. qt, 0.53 Imp. qt.)
Fuel system
Type: Horizontal type carburetor with butterfly valve
Main jet: Externally-vent carb with dual-element silent air cleaner: #72
Externally-vent carb with oil bath or semi-dry air cleaner: #75
Internally-vent carb with dual-element silent air cleaner: #78
Internally-vent carb with cyclone air cleaner: #75
Float height: 13.7 mm (0.5394 in)
Pilot screw opening: Ext-vent carb with dual-element silent air cleaner: 2 turns out
Ext-vent carb with oil bath or semi-dry air cleaner: 2-1/4 turns out
Int-vent carb with dual-element silent air cleaner: 2-1/4 turns out
Int-vent carb with cyclone air cleaner: 2-1/4 turns out
Ignition system
Type: Transistorized magneto ignition
Ignition timing: 20° B.T.D.C. (Fixed)
Spark plug: NGK: BP6ES, BPR6ES
NIPPONDENSO: W20EP-U, W20EPR-U
Spark plug gap: 0.7-0.8 mm (0.0276-0.0315 in)
Spark plug torque: 18 N·m (1.8 kg·m, 13.3 ft·lb)
Ignition coil air gap 0.2-0.6 mm (0.0079-0.0236 in)

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