Do you have a question about the Honda GX660 and is the answer not in the manual?
Engine serial number location for reference and inquiries.
Specifications for engine dimensions, weights, and inclination angles.
Detailed technical specifications for engine performance, fuel, and ignition.
Graphs illustrating engine power and torque output versus speed.
Engine dimensional drawings with measurements for various views.
Dimensional drawings for Power Take-Off (PTO) mounting parts.
Dimensional drawing for engine mounting configurations.
Standard measurements and service limits for engine components.
Specific torque values for engine assembly and maintenance.
Locations and types of lubricants and sealants for engine parts.
List of special tools required for service and maintenance tasks.
Illustrations showing correct routing of engine wire harnesses.
Diagrams detailing the correct routing of fuel and breather tubes.
Periodic maintenance tasks and intervals for the engine.
Procedure for checking engine oil level and recommended oil types.
Step-by-step guide for draining and refilling engine oil.
Procedure for replacing the engine oil filter.
Instructions for inspecting and cleaning the air cleaner elements.
Procedure for replacing the air cleaner filters.
How to inspect, gap, and adjust the spark plug.
Procedure for replacing the spark plug.
Instructions for cleaning the muffler spark arrester screen.
Procedure for checking and adjusting the engine idle speed.
Steps for checking and adjusting valve clearances.
Procedure for cleaning carbon deposits from the combustion chamber.
Instructions for replacing the fuel filter.
Procedure for inspecting fuel tubes for deterioration or leaks.
Engine serial number location for reference and inquiries.
Specifications for engine dimensions, weights, and inclination angles.
Detailed technical specifications for engine performance, fuel, and ignition.
Graphs illustrating engine power and torque output versus speed.
Engine dimensional drawings with measurements for various views.
Dimensional drawings for Power Take-Off (PTO) mounting parts.
Dimensional drawing for engine mounting configurations.
Standard measurements and service limits for engine components.
Specific torque values for engine assembly and maintenance.
Locations and types of lubricants and sealants for engine parts.
List of special tools required for service and maintenance tasks.
Illustrations showing correct routing of engine wire harnesses.
Diagrams detailing the correct routing of fuel and breather tubes.
Periodic maintenance tasks and intervals for the engine.
Procedure for checking engine oil level and recommended oil types.
Step-by-step guide for draining and refilling engine oil.
Procedure for replacing the engine oil filter.
Instructions for inspecting and cleaning the air cleaner elements.
Procedure for replacing the air cleaner filters.
How to inspect, gap, and adjust the spark plug.
Procedure for replacing the spark plug.
Instructions for cleaning the muffler spark arrester screen.
Procedure for checking and adjusting the engine idle speed.
Steps for checking and adjusting valve clearances.
Procedure for cleaning carbon deposits from the combustion chamber.
Instructions for replacing the fuel filter.
Procedure for inspecting fuel tubes for deterioration or leaks.
| Compression Ratio | 9.3:1 |
|---|---|
| PTO Shaft Rotation | Counterclockwise (from PTO shaft side) |
| Ignition System | Digital CDI with variable timing |
| Displacement | 688 cm³ |
| Bore x Stroke | 78 x 72 mm |
| Net Power Output | 3, 600 rpm |
| Net Torque | 48.3 Nm (35.6 lb-ft) @ 2, 400 rpm |
| Fuel Consumption | 3, 600 rpm |
| Starting System | Electric |
| Lubrication System | Forced lubrication |
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