Honda GX200T2

Honda GX200 T2/UT2The Honda GX200 T2/UT2 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 commercial lawn and garden equipment, tillers and cultivators, generators, construction and industrial equipment, agricultural equipment and water pumps.

The Honda GX200 T2/UT2 engine has an OHV (overhead valve) design; high compression ratio for better fuel efficiency; horizontal type carburetor with butterfly valve; mechanical centrifugal governor; forced splash lubrication system; heavy-duty recoil or recoil and electric starter and C.D.I. (Capacitor Discharge Ignition) type magneto ignition. The engine can be equipped with a dual silent type or a cyclone-type air cleaner.

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 8.5:1. The Honda GX200T2 engine produced 5.6 HP (4.1 kW) at 3,600 rpm of maximum horsepower and 5.0 HP (3.7 kW) at 3,600 rpm of continuous rated power. Maximum torque is 12.4 N·m (1.3 kg·m, 9.0 ft·lb) at 2,500 rpm.

General information

Engine Specifications
ModelGX200 T2 / UT2
Type4-stroke, OHV, single cylinder inclined by 25°
Displacement196 cm 3 (12.0 cu-in)
Max. horsepower5.6 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
CarburetorHorizontal type, butterfly valve
Cooling systemForced-air
Ignition systemC.D.I. (Capacitor Discharge Ignition)
Lubricating systemForced splash
Starting systemRecoil oa Recoil and Starter motor
Stoping systemIgnition primary circuit ground
Fuel usedUnleaded gasoline (octane number 86 or higher)
Fuel tank capacity3.1 L (0.82 US Gal, 0.68 Imp Gal.)
PTO shaft rotationCounterclockwise (from PTO shaft side)

Cylinder Block and Head

The Honda GX200T2 has cast iron cylinder sleeve, ball bearing supported forged steel crankshaft, improved piston design. The piston has two compression rings and one oil ring. Precision camshaft design offers precise valve timing and optimal valve overlap for better fuel efficiency. Cylinder bore and piston stroke are 68.0 mm (2.7 in) and 54.0 mm (2.1 in), respectively. Compression ratio rating is 8.5:1

Cylinder block
Compression ratio:8.5:1
Bore x Stroke68 X 54 mm (2.7 x 2.1 in)
Sleeve internal diameter68.00 mm (2.68 in)
Piston skirt outer diameter67.985 mm (2.6766 in)
Number of piston rings (compression / oil):2 / 1
Ring side clearanceTop0.035-0.070 mm (0.0014-0.0028 in)
Second0.045-0.080 mm (0.0018-0.0032 in)
Ring end gapTop0.20-0.35 mm (0.0079-0.0138 in)
Second0.35-0.50 mm (0.0138-0.0197 in)
Oil (side rail)0.2-0.7 mm (0.01-0.03 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 ID18.005 mm (0.7087 in)
Connecting rod big end ID30.02 mm (1.182 in)
Piston pin outer diameter13.0 mm (0.51 in)
Crankshaft crank pin outer diameter29.98 mm (1.180 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)
Valve spring free length:30.5 mm (1.20 in)
Camshaft outer diameter:13.984 mm (0.5506 in)
Cam height:INTAKE27.500-27.900 mm (1.0827-1.0984 in)
EXHAUST27.547-27.947 mm (1.0845-1.1003 in)

Tightening torque specs

Tightening torque specs
Connecting rod bolt12 Nm; 1.2 kg·m; 9 ft·lb
Cylinder head bolt24 Nm; 2.4 kg·m; 17 ft·lb
Flywheel nut75 Nm; 7.5 kg·m; 54 ft·lb
Rocker arm pivot adjusting nut10 Nm; 1.0 kg·m; 7 ft·lb
Rocker arm pivot bolt24 Nm; 2.4 kg·m; 17 ft·lb
Crankcase cover bolt24 Nm; 2.4 kg·m; 17 ft·lb
Oil level switch joint nut10 Nm; 1.0 kg·m; 7 ft·lb

Service Information

Engine
Maximum speed3,900 ± 100 rpm
Idle speed1,400 ± 150 rpm
Cylinder compression3.6 kg/cm2 (51 psi) at 600 rpm
Valve clearance
Intake valve clearance0.15±0.02 mm (0.006±0.001 in)
Exhaust valve clearance0.20±0.02 mm (0.008±0.001 in)
Oil system
Oil typeHonda 4-stroke or an equivalent (SJ or higher)
Recommended oilSAE 10W-30, 10W-40
Oil capacity0.60 L (0.63 US. qt, 0.53 Imp. qt.)
Carburetor
Main jet BE59L, BE59N, BE59U: #75
BE74Y: #78
Float height13.7 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 timing20° B.T.D.C. (Fixed)
Spark plugNGK: BPR6ES
DENSO: W20EPR-U
Spark plug gap0.7-0.8 mm (0.028-0.031 in)
Primary ignition coil resistance0.6-0.9 Ω
Secondary ignition coil resistance5.6-6.9 kΩ
Ignition coil air gap0.4 ± 0.2 (0.016 ± 0.008)
Starter motor
Brush length11.0 mm (0.43 in)
Mica depth1.6 mm (0.06 in)
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We try to use verified sources and official documentation, however, differences between sources or errors in entering information may occur. We do not provide advice on technical issues related to the engines operation or repair. We do not recommend using provided information for engines repairing engines or spare parts ordering, use only official service manuals and spare-parts catalogs.

2 Comments

  1. Great info but I have one question not covered. I accidently jarred the camshaft gear free of the crankshaft gear while installing new piston and I’m not sure if I got it back in exactly the right place. I found the timing mark on camshaft but all I could find on crankshaft is a tiny 0 on one tooth. Does this crankshaft tooth fit in the timing mark groove on the camshaft. Any help is greatly appreciated.

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