The Honda GX110 is a 107 cc (6.5 cu-in) single-cylinder, air-cooled, four-stroke cycle, internal combustion small gasoline engine manufactured by Honda Motor Company since 1983 for general-purpose applications.
This engine has an OHV design for increased efficiency and optimal power transfer, sophisticated air intake system, large capacity, multi-chamber exhaust system, heavy-duty recoil starter.
A 57.0 mm (2.24 in) cylinder bore and 42.0 mm (1.65 in) piston stroke give the engine a total of 107 cc (6.5 cu-in) of displacement. The compression ratio rating is 8.7:1. This engine produces 3.5 PS (2.6 KW; 3.5 HP) at 4,000 rpm of maximum horsepower and 6.68 N·m (0.7 kg·m, 5.2 ft·lb) at 2,800 rpm of peak torque.
General information
| Engine Specifications | |
| Model | GX110 |
| Type | 4-stroke, OHV, single cylinder, inclined by 25° |
| Displacement | 107 cm 3 (6.5 cu-in) |
| Max. horsepower | 3.5 PS (2.6 KW; 3.5 HP) at 4,000 rpm |
| Max. torque (crank PTO) | 6.68 N·m (0.7 kg·m, 5.2 ft·lb) at 2,800 rpm |
| Carburetor | Horizontal type, butterfly valve |
| Cooling system | Forced-air |
| Ignition system | Transistorized magneto ignition |
| Lubricating system | Splash type |
| Starting system | Recoil starter |
| Stoping system | Ignition primary circuit ground |
| Fuel used | Unleaded gasoline (octane number 86 or higher) |
| Fuel tank capacity | 2.5 liters (0.7 US gal, 0.5 Imp. gal) |
| Fuel consumption | 230 g/HPh |
| PTO shaft rotation | Counterclockwise (from PTO shaft side) |
Dimensions and Weight
| GX110 “Q” TYPE-CYCLONE AIR CLEANER | |
| Length, mm (in) | 320 (12.6) |
| Width, mm (in) | 345 (13.6) |
| Height, mm (in) | 320 (12.6) |
| Dry weight, kg (lb) | 12.0 (25.6) |
Cylinder Block and Head
The Honda GX110 has cast iron cylinder sleeve, ball bearing supported crankshaft, improved piston design, heavy-duty balancer shaft.
| Cylinder block | ||
| Compression ratio: | 8.7:1 | |
| Bore x Stroke | 57.0 mm X 42.0 mm (2.24 x 1.65 in) | |
| Sleeve internal diameter | 57.000-57.015 mm (2.2440-2.2447 in) | |
| Piston skirt outer diameter | 56.965-56.985 mm (2.2427-2.2435 mm) | |
| Number of piston rings (compression / oil): | 2 / 1 | |
| Piston ring side clearance (Top): | 0.015-0.045 mm (0.0006-0.0018 in) | |
| Piston ring side clearance (Second): | 0.015-0.045 mm (0.0006-0.0018 in) | |
| Piston ring end gap (Top): | 0.200-0.400 mm (0.0079-0.0157 in) | |
| Piston ring end gap (Second): | 0.200-0.400 mm (0.0079-0.0157 in) | |
| Piston ring end gap (Oil): | 0.150-0.350 mm (0.006-0.0137 in) | |
| Ring width (Top): | 1.500 mm (0.059 in) | |
| Ring width (Second): | 1.500 mm (0.059 in) | |
| Ring width (Oil): | 2.500 mm (0.98 in) | |
| Piston pin outer diameter: | 12.994-13.000 mm (0.5115-0.5118 in) | |
| Crankshaft main journal diameter: | 26.0 mm (1.02362 in) | |
| Cylinder Head | ||
| Warpage (limit) | 0.10 mm (0.004 in) | |
| Valve Arrangement: | OHV | |
| Valves: | 2 | |
| Valve stem outer diameter (INTAKE): | 5.468-5.480 mm (0.2152-0.2157 in) | |
| Valve stem outer diameter (EXHAUST): | 5.425-5.440 mm (0.2135-0.2141 in) | |
| Camshaft cam height (INTAKE): | 27.700 mm (1.0905 in) | |
| Camshaft cam height (EXHAUST): | 27.750 mm (1.0925 in) | |
| Camshaft journal diameter: | 14.000 mm (0.5511 in) | |
Service Information
| Engine | |
| Maximum speed | 4,000 ± 150 rpm |
| Idle speed | 1,400 ± 150 rpm |
| Cylinder compression | 6.0-8.5 kg/cm2 (85-151 psi) at 600 rpm |
| Carburetor | |
| Type | Horizontal type, butterfly valve |
| Main jet | #60 |
| Float height | 13.7±1.5 mm (0.54±0.06 in) |
| Pilot screw opening | 2-1/4 turns out |
| Oil system | |
| Oil type | Honda 4-stroke or an equivalent (SE or SF) |
| Recommended oil | SAE 10W-30 |
| Oil capacity | 0.6 liters (0.63 US.qts, 0.53 Imp. qts) |
| Ignition system | |
| Spark plug | NGK: BPR6ES NIPPONDENSO: W20EPR-U |
| Ignition timing | B.T.D.C. 25° / 1,400 rpm |
| Spark plug gap | 0.7-0.8 mm (0.028-0.031 in) |
| Ignition coil air gap | 0.2-0.6 mm (0.01-0.02 in) |
Engine applications
- Pressure washers
- Commercial lawn and garden equipment
- Tillers / cultivators
- Generators
- Construction / industrial equipment
- Agricultural equipment
- Small vehicles
- Water pumps
Author:
What is the shaft diameter and keyway size for the crankshaft? How much shaft sticks out beyond the crankcase?
I an searching for a replacement engine.
Richard
3/4″ diameter shaft.
3/16″ key/keyway
1.65″ (42mm) shaft protrusion from crankcase mounting surface
Ek het u Agpro 46 wat ek sukkel champion 8815 vonkprop te kry en het Agpro P600 3wiel wat ek ringe verpakking stel soek al by van hulle Kohler Courage XT-6 en XT-7 mesjiene op wat weer laat werk.