Honda GX200 UT2/T2

Honda GX200 UT2/T2The Honda GX200 UT2/T2 is a 196 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 GX200 UT2/T2 engine a total of 196 cc of displacement. The compression ratio rating is 8.5:1.

This engine produced 5.6 PS (4.1 kW; 5.5 HP) at 3,600 rpm of max horsepower or 5.0 PS (3.7 kW; 5.0 HP) at 3,600 rpm of continuous rated power and 12.4 N·m (1.3 kg·m, 9.1 ft·lb) at 2,500 rpm of peak torque.

The Honda GX200 UT2/T2 features:

  • OHV design
  • C.D.I. (Capacitor Discharge Ignition) type magneto ignition ignition system
  • Horizontal type carburetor with butterfly valve
  • Centrifugal governor
  • Forced splash lubrication system
  • Forced air cooling system
  • Recoil or recoil and electric starter

General information

Engine Specifications
Engine model GX200 UT2/T2
Engine type 4-stroke, OHV, single-cylinder
Displacement 196 cm3, (11.96 cu·in)
Max. horsepower 5.6 PS (4.1 kW; 5.5 HP) at 3,600 rpm
Max. torque 12.4 N·m (1.3 kg·m, 9.1 ft·lb) at 2,500 rpm
Cooling system Forced air
Air cleaner Dual silent type, Cyclone type
Lubricating system Forced splash
Ignition system C.D.I. (Capacitor Discharge Ignition) type magneto ignition
Fuel system Horizontal type carburetor with butterfly valve
Fuel consumption 1.7 Liters (0.45 US gal, 0.37 Imp gal)/h
Fuel tank capacity 3.1 L (0.82 US. gal. 0.68 Imp. gal.)
Fuel used Unleaded gasoline (octane number 86 or higher)
Starting system Recoil or Recoil and electric starter
Stoping system Ignition exciter coil circuit open
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: 8.5:1
Cylinder bore: 68.0 mm (2.68 in)
Piston stroke: 54.0 mm (2.13 in)
Cylinder internal diameter (standard): 68.000-68.015 mm (2.6772-2.6778 in)
Piston skirt outer diameter (standard): 67.965-67.985 mm (2.6758-2.6766 in)
Number of piston rings (compression / oil): 2/1
Connecting rod big end diameter (standard): 30.020-30.033 mm (1.1819-1.1824 in)
Connecting rod small end diameter (standard): 18.005-18.020 mm (0.7089-0.7094 in)
Piston pin diameter: 17.994-18.000 mm (0.7084-0.7087 in)
Side clearance (Top): 0.035-0.070 mm (0.0014-0.0028 in)
Side clearance (Second): 0.045-0.080 mm (0.0018-0.0031 in)
Ring end gap (Top): 0.200-0.350 mm (0.0079-0.0138 in)
Ring end gap (Second): 0.350-0.500 mm (0.0138-0.0197 in)
Ring end gap (Oil): 0.200-0.700 mm (0.0079-0.0276 in)
Ring width (Top): 0.950-0.970 mm (0.0374-0.0382 in)
Ring width (Second): 0.940-0.960 mm (0.037-0.0378 in)
Crankpin journal diameter: 29.970-29.980 mm (1.1799-1.1803 in)
Crankshaft center distance: 27.0 mm (1.065 in)
Cylinder head
Valve arrangement: OHV, gear driven
Valves: 2
Valve steam diameter (INTAKE): 5.468-5.480 mm (0.2153-0.2157 in)
Valve steam diameter (EXHAUST): 5.425-5.440 mm (0.2136-0.2142 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): 27.500-27.900 mm (1.0827-1.0984 in)
Camshaft lobe height (EXHAUST): 27.547-27.947 mm (1.0845-1.1003 in)
Camshaft journal diameter : 13.966-13.984 mm (0.5498-0.5506 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 adjusting 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 24 Nm; 2.4 kg·m; 17 ft·lb
Oil level switch joint nut 10 Nm; 1.0 kg·m; 7 ft·lb

Service Data

Engine
Maximum speed: 3,600-4,000 rpm
Idle speed: 1,250-1,550 rpm
Cylinder compression: 0.35 MPa (3.6 kgf/cm2 , 51 psi)/600 min -1 (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 (SJ or higher)
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: BE59L, BE59N, BE59U: #75
BE74Y: #78
Float height: 13.7 mm (0.5394 in)
Pilot screw opening: BE59L, BE59N: 1-7/8 turns out
BE59U: 2-1/4 turns out
BE74Y: 2-3/4 turns out turns out
Ignition system
Type: C.D.I. (Capacitor Discharge Ignition) type magneto ignition
Ignition timing: 20° B.T.D.C. (Fixed)
Spark plug: NGK: BPR6ES
DENSO: 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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