Honda GP200

Honda GP200The Honda GP200H is a 0.20 l (196 cc, 12.0 cu·in) single-cylinder air-coolled 4-stroke internal combustion small gasoline engine with horizontal shaft, manufactured by Honda Motor.

The Honda GP200 has overhead valve design, single-cylinder inclined by 25°, transistorized magneto ignition system and horizontal carburetor with a butterfly valve. It was equipped with a recoil starter. The GP160 engine has a bore and stroke of 68.0 mm x 54.0 mm. Compression ratio rating is 8.5:1.

The Honda GP160 net power is 5.5 HP (4.1 kW) at 3,600 rpm and continuously rated power 5.0 HP (3.7 kW) at 3,600 rpm. Maximum net torque is 12.4 Nm (1.26 kg·m, 9.1 ft·lb) of torque at 2,500 rpm.

General information

Engine Specifications
ModelGP200H
Type4-stroke, OHV, single cylinder, inclined by 25°
Displacement196 cm 3 (12.0 cu·in)
Max. horsepower5.5 HP (4.1 kW) at 3,600 rpm
Max. torque (crank PTO)12.4 Nm (1.26 kg·m, 9.1 ft·lb) at 2,500 rpm
CarburetorHorizontal type, butterfly valve
Cooling systemForced-air
Ignition systemTransistorized magneto ignition
Lubricating systemForced splash
Starting systemRecoil starter
Stoping systemIgnition primary circuit ground
Fuel usedUnleaded gasoline (octane number 86 or higher)
Fuel consumption3.1 Liters (0.82 US gal, 0.68 Imp gal) / h
PTO shaft rotationCounterclockwise (from PTO shaft side)

Dimensions and Weight

Honda GP200 (Type Q)
Length, mm (in)323 (12.7)
Width, mm (in)378 (14.9)
Height, mm (in)335 (13.2)
Dry weight, kg (lb)16.0 (35.0)
Operating
weight, kg (lb)
19.5 (43.0)

Cylinder Block and Head

Cylinder block
Compression ratio:8.5:1
Bore x Stroke68 X 54 mm (2.68 x 2.13 in)
Sleeve internal diameter68.000-68.020 mm (2.6772-2.6779 in)
Piston skirt outer diameter67.965-67.985 mm (2.6758-2.6766 mm)
Number of piston rings (compression / oil):2 / 1
Ring side clearanceTop0.035-0.070 (0.0014-0.0028)
Second0.045-0.080 mm (0.0018-0.0032 in)
Ring end gapTop0.200-0.350 mm (0.0079-0.0138 in)
Second0.350-0.500 mm (0.0138-0.0197 in)
Oil (side rail)0.20-0.70 mm (0.008-0.028 in)
Ring widthTop0.950-0.970 mm (0.0374-0.0382 in)
Second0.940-0.960 mm (0.0370-0.0378 in)
Connecting rod small end I.D.18.006-18.017 mm (0.7089-0.7093 in)
Connecting rod big end I.D.30.015-30.025 mm (1.1817-1.1821 in)
Crankpin outer diameter29.970-29.980 mm (1.1799-1.1803 in)
Cylinder Head
Warpage (limit)0.10 mm (0.004 in)
Valve Arrangement:OHV
Valves:2
Stem outer diameter (standard):INTAKE5.468-5.480 mm (0.2153-0.2157 in)
EXHAUST5.425-5.440 mm (0.2136-0.2142 in)
Guaide inner diameter:INTAKE/EXHAUST5.500-5.512 mm (0.2165-0.2170 in)
Cam height:INTAKE27.500-27.900 mm (1.0827-1.0984 in)
EXHAUST27.547-27.947 mm (1.0845-1.1003 in)
Camshaft outer diameter:13.966-13.984 mm (0.5498-0.5506 in)

Tightening torque specs

Tightening torque specs
Crankcase cover bolt24 Nm; 2.4 kg·m; 18 ft·lb
Cylinder head bolt24 Nm; 2.4 kg·m; 18 ft·lb
Engine oil drain plug bolt18 Nm; 1.8 kg·m; 13 ft·lb
Connecting rod bolt12 Nm; 1.2 kg·m; 9 ft·lb
Rocker arm pivot bolt24 Nm; 2.4 kg·m; 18 ft·lb
Rocker arm pivot lock nut10 Nm; 1.0 kg·m; 7 ft·lb
Oil level switch joint nut10 Nm; 1.0 kg·m; 7 ft·lb
Flywheel nut75 Nm; 7.5 kg·m; 55 ft·lb
Fuel tank nut / bolt10 Nm; 1.0 kg·m; 7 ft·lb
Air cleaner mount nut9 Nm; 0.9 kg·m; 6.6 ft·lb
Muffler nut24 Nm; 2.4 kg·m; 18 ft·lb
Recoil starter set screw10 Nm; 1.0 kg·m; 7 ft·lb

Maintenance data

Engine
Maximum speed3,850 ± 150 rpm
Idle speed1,400 ± 150 rpm
Cylinder compression3.6 kg/cm2 (51 psi, 0.35 MPa) at 600 rpm
Valve clearance
Intake valve0.15 ± 0.02 (0.006 ± 0.001)
Exhaust valve0.20 ± 0.02 (0.008 ± 0.001)
Carburetor
Main jet#72
Float height13.7 mm (0.54 in)
Pilot screw opening2-3/8 turns out
Oil system
Oil typeHonda 4-stroke or an equivalent (SE or later)
Recommended oilSAE 10W-30
Oil capacity0.60 L (0.63 US qt, 0.53 Imp qt)
Ignition system
Ignition timingB.T.D.C. 20° (Fixed)
Spark plugNGK: BPR6ES
DENSO: W20EPR-U
Spark plug gap0.7-0.8 mm (0.028-0.031 in)
Spark plug torque18 Nm; 1.8 kg·m; 13 ft·lb
Ignition coil air gap0.2-0.6 mm (0.01-0.02 in)
Ignition coil primary resistance0.68-0.92 Ω
Ignition coil secondary resistance5.6-8.4 kΩ
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