Honda GX690 22.1HP 688cc V-Twin Engine – 1-1/8in Shaft (ID 18262)
Honda GX690 packs 22.1 horsepower. A 688cc block backs up the output, and torque peaks at 48.3 Nm. A 3-year warranty backs the build. It's built for heavy construction equipment and hydraulic power units.
- Puts out 22.1 horsepower reliably
- Runs on a 688cc engine block
- Pulls 48.3 Nm of torque at peak
- Shaft measures 1-1/8in, horizontal configuration
- Electric start, no pull cord needed
Description
During continuous 8-hour surface washing shifts, the Honda GX690 horizontal engine (ID 18262) maintains rock-steady water volume across dual-wand pressure cleaning trailers. High-volume pressure washing skids running dual wands at 4000 PSI place brutal continuous load resistance on engine crankshafts. This 688cc 22.1HP engine solves that mechanical strain with an oversized 1-1/8-inch output shaft, an overhead valve cylinder layout, and a rigid crankcase base casting that resists vibratory cracking.
An oversized cast-iron cylinder sleeve protects bore roundness against abrasive road grit, keeping ring tension tight over hundreds of washing hours. Full-pressure lubrication feeds continuous oil to connecting rod bearings through a spin-on automotive filter, stopping metal wear during continuous full-throttle spray passes. The 12V electric starter motor turns the flywheel ring gear with key activation, saving operator energy during repetitive start-stop tasks on commercial washing routes.
Technical Features of Honda GX690 (ID 18262)
- 688cc Commercial OHV Powerplant: Produces 22.1 net horsepower to sustain continuous dual-gun pressure washing.
- 1-1/8-Inch Heavy-Duty Shaft: Direct fit for high-GPM industrial ceramic plunger pumps and multi-groove pulleys.
- Durable Cast-Iron Cylinder Sleeves: Resists bore wear from abrasive dirt, extending engine life in severe commercial service.
- Dual-Stage Commercial Canister Filter: Traps fine dust particles across two media layers to preserve cylinder wall compression.
- Integrated Honda Oil Alert: Shuts down the ignition automatically if crankcase oil falls below safe operating levels.
Heavy-Duty Architecture & Low Maintenance
Designed for demanding commercial service, this 1-1/8-inch shaft horizontal engine provides steady power output with minimal field maintenance requirements.
- A rigid aluminum crankcase casting and precision-machined 1-1/8-inch shaft journal resist side-load belt stress under high tension.
- Overhead valve efficiency delivers clean fuel combustion to reduce carbon accumulation on valve faces.
- Commercial washing contractors and equipment rental yards secure dependable machine uptime across peak seasons.
Equipment Integration & Fitment Specs
Weighing 97.9 pounds dry with an industry-standard 4-bolt horizontal base pattern and 1-1/8-inch shaft, this motor repowers multi-gun pressure wash skids, heavy commercial chippers, and hydraulic power packs without frame alterations.
Commercial Coverage & Maintenance Upkeep
- Factory warranty terms provide 3-Year commercial and consumer coverage on all core mechanical assemblies.
Service this engine with fresh 10W-30 motor oil and a new filter every 100 operating hours. Tap clean the air filter element weekly on dusty job sites, and maintain the spark plug electrode gap at 0.028 to 0.031 inches. Order the Honda GX690 horizontal shaft engine (ID 18262) from Mulmotor.com for guaranteed factory-fresh units, complete manufacturer warranty coverage, and dedicated commercial equipment support.
Honda GX690-TDW Technical Specs
| Brand | Honda |
| Full Model Code | GX690-TDW |
| Country of Origin | Japan |
| Engine Orientation | Horizontal Shaft |
| Engine Type | 4-Stroke, OHV, 90° V-Twin |
| Displacement | 688 cc |
| Bore x Stroke | 78 x 72 mm |
| Compression Ratio | 9.3:1 |
| Maximum Output | 16.5 kW (22.1 HP) @ 3600 RPM |
| Maximum Torque | 48.3 Nm (35.6 lbs-ft) @ 2500 RPM |
| Specific Fuel Consumption | 6.7 L/hr @ 3600 RPM |
| Fuel Induction System | Twin Barrel Carburetor |
| Ignition System | Digital CDI |
| Start System | Electric Start |
| Shaft Specification | 1-1/8" (28.5 mm) Straight Keyway Shaft (Specialized) |
| Fuel Tank Capacity | Data not released (External) |
| Oil Capacity & Type | 1.9 Liters / SAE 10W-30 |
| Cooling System | Forced Air Cooled |
| Dry Weight | 44.6 kg |
| Dimensions | 429 x 410 x 438 mm |
| Standard Warranty | 3 Years |
| Primary Application | Heavy Construction Equipment, Hydraulic Power Units, OEM Industrial Machinery |












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