Honda GX200 Technical Specifications

Engine Specifications
Model GX200 T2 / UT2
Type 4-stroke, OHV, single cylinder inclined by 25°
Displacement 196 cm 3 (12.0 cu-in)
Max. horsepower 5.6 HP (4.1 kW) at 3,600 rpm
Max. torque (crank PTO) 12.4 N·m (1.3 kg·m, 9.0 ft·lb) at 2,500 rpm
Carburetor Horizontal type, butterfly valve
Cooling system Forced-air
Ignition system C.D.I. (Capacitor Discharge Ignition)
Lubricating system Forced splash
Starting system Recoil oa Recoil and Starter motor
Stoping system Ignition primary circuit ground
Fuel used Unleaded gasoline (octane number 86 or higher)
Fuel tank capacity 3.1 L (0.82 US Gal, 0.68 Imp Gal.)
PTO shaft rotation Counterclockwise (from PTO shaft side)
Cylinder block
Compression ratio: 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 0.035-0.070 mm (0.0014-0.0028 in)
Second 0.045-0.080 mm (0.0018-0.0032 in)
Ring end gap Top 0.20-0.35 mm (0.0079-0.0138 in)
Second 0.35-0.50 mm (0.0138-0.0197 in)
Oil (side rail) 0.2-0.7 mm (0.01-0.03 in)
Ring width Top 0.950-0.970 mm (0.0374-0.0382 in)
Second 0.940-0.960 mm (0.0370-0.0378 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 5.468-5.480 mm (0.2153-0.2157 in)
EXHAUST 5.425-5.440 mm (0.2136-0.2142 in)
Valve spring free length: 30.5 mm (1.20 in)
Camshaft outer diameter: 13.984 mm (0.5506 in)
Cam height: INTAKE 27.500-27.900 mm (1.0827-1.0984 in)
EXHAUST 27.547-27.947 mm (1.0845-1.1003 in)
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
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 (SJ or higher)
Recommended oil SAE 10W-30, 10W-40
Oil capacity 0.60 L (0.63 US. qt, 0.53 Imp. qt.)
Carburetor
Main jet BE59L, BE59N, BE59U: #75
BE74Y: #78
Float height 13.7 mm (0.54 in)
Pilot screw opening BE59L, BE59N: 1-7/8 turns out
BE59U: 2-1/4 turns out
BE74Y: 2-3/4 turns out
Ignition system
Ignition timing 20° B.T.D.C. (Fixed)
Spark plug NGK: BPR6ES
DENSO: W20EPR-U
Spark plug gap 0.7-0.8 mm (0.028-0.031 in)
Primary ignition coil resistance 0.6-0.9 Ω
Secondary ignition coil resistance 5.6-6.9 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)