The Honda GX200 T is a 196 cc (12.0 cu-in) single-cylinder inclined by 25° air-cooled 4-stroke internal combustion small gasoline engine with horizontal shaft manufactured by Honda Motor Company for general-purpose applications, such as pressure washers, commercial lawn and garden equipment, tillers and cultivators, generators, construction and industrial equipment, agricultural equipment, small vehicles, water pumps.
The Honda GX200 T engine has an OHV (overhead valve) design; high compression ratio for better fuel efficiency; horizontal type carburetor with butterfly valve; heavy duty recoil or electric starter and transistorized magneto ignition system.
The cylinder bore is 68.0 mm (2.7 in) and the piston stroke is 54.0 mm (2.1 in), compression ratio rating is 7.65:1 or 8.5:1. The GX200T engine produced 4.8 kW (6.5 HP) of horsepower at 3,600 rpm.
Maximum 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
General information
| Engine Specifications | |
| Model | GX200T |
| Type | 4-stroke, OHV, single cylinder inclined by 25° |
| Displacement | 198 cm 3 (12.0 cu-in) |
| Max. horsepower | 6.5 HP (4.8 kW) at 3,600 rpm |
| Max. torque (crank PTO) | 13.2 N·m (1.35 kg·m, 9.8 ft·lb) at 2,500 rpm |
| Carburetor | Horizontal type, butterfly valve |
| Cooling system | Forced-air |
| Ignition system | Transistorized magneto ignition |
| Lubricating system | Splash |
| Starting system | Recoil starter |
| Stoping system | Ignition primary circuit ground |
| Fuel used | Unleaded gasoline (octane number 86 or higher) |
| Fuel tank capacity | 3.6 L (0.95 US Gal, 0.79 Imp Gal.) |
| Fuel consumption | 230 g/PSh |
| PTO shaft rotation | Counterclockwise (from PTO shaft side) |
Cylinder Block and Head
The Honda GX200 has cast iron cylinder sleeve, ball bearing supported forged steel crankshaft, improved piston design. Precision camshaft design offers precise valve timing and optimal valve overlap for better fuel efficiency.
| Cylinder block | ||
| Compression ratio: | 7.65:1 or 8.5:1 | |
| Bore x Stroke | 68 X 54 mm (2.7 x 2.1 in) | |
| Sleeve internal diameter | 68.00 mm (2.68 in) | |
| Piston skirt outer diameter | 67.985 mm (2.6766 in) | |
| Number of piston rings (compression / oil): | 2 / 1 | |
| Ring side clearance | Top/Second | 0.015-0.045 mm (0.0006-0.0018 in) |
| Ring end gap | Top/Second | 0.25-0.40 mm (0.010-0.016 in) |
| Ring width | Top/Second | 1.5 mm (0.06 in) |
| Connecting rod small end ID | 18.005 mm (0.7087 in) | |
| Connecting rod big end ID | 30.02 mm (1.182 in) | |
| Piston pin outer diameter | 13.0 mm (0.51 in) | |
| Crankshaft crank pin outer diameter | 29.98 mm (1.180 in) | |
| Cylinder Head | ||
| Warpage (limit) | 0.10 mm (0.004 in) | |
| Valve Arrangement: | OHV | |
| Valves: | 2 | |
| Stem outer diameter (standard): | INTAKE | 5.48 mm (0.216 in) |
| EXHAUST | 5.44 mm (0.214 in) | |
| Valve spring free length: | 30.5 mm (1.20 in) | |
| Camshaft outer diameter: | 13.984 mm (0.5506 in) | |
| Cam height: | INTAKE | 27.7 mm (1.09 in) |
| EXHAUST | 27.75 mm (1.093 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 Information
| Engine | |
| Maximum speed | 3,900 ± 100 rpm |
| Idle speed | 1,400 ± 150 rpm |
| Cylinder compression | 3.6 kg/cm2 (51 psi) 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.) |
| Carburetor | |
| 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 (0.54 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 | |
| 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 (0.028-0.031 in) |
| Primary ignition coil resistance | 0.8-1.0 Ω |
| Secondary ignition coil resistance | 5.9-7.1 kΩ |
| Ignition coil air gap | 0.4 ± 0.2 (0.016 ± 0.008) |
| Starter motor | |
| Brush length | 11.0 mm (0.43 in) |
| Mica depth | 1.6 mm (0.06 in) |
Author:
Can I bore my 6.5 horsepower honda motor over any or not and do u guy make an after market go kart gas line and thottle set to convert the motor from a tiller to a go kart throttle
Can you put a Honda GX 160 Gas tank on a GX 200. Will it fit???
Yes it should bolt right up
What can cause the compression to be 26psi vs 51psi it should be?