The 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:
- Overhaed valve (OHV) design
- C.D.I. (Capacitor Discharge Ignition)
- 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: | 0.15±0.02 mm (0.006±0.001 in) |
| Exhaust valve clearance: | 0.20±0.02 mm (0.008±0.001 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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