| 
 Model  | 
 R175A  | 
 R180K  | 
| 
 Type  | 
 Single-cylinder Horizontal Four-stroke  | 
| 
 Combustion system  | 
 Precombustion  | 
 Swirlcombustion Chamber  | 
| 
 Bore×stroke(mm)  | 
 75×80  | 
 80×80  | 
| 
 Compression ratio  | 
 22±1  | 
 22±1  | 
| 
 1-hour rated output(kw/r/min)  | 
 4.85/2600  | 
 5.67/2600  | 
| 
 12-hour rated output(kw/r/min)  | 
 4.41/2600  | 
 5.15/2600  | 
| 
 Specific fuel consumption(g/kw.h)  | 
 ≤277.4  | 
 ≤277.4  | 
| 
 Specific lube oil consumption(g/kw.h)  | 
 ≤4.76  | 
 ≤4.76  | 
| 
 Cooling system  | 
 Hopper water cooled  | 
| 
 Lubrication system  | 
 Combined pressure and Splashing  | 
| 
 Starting method  | 
 Hand crank  | 
| 
 Net weight(kg)  | 
 65  | 
 65  | 
| 
 Method of power output  | 
 Output of flywheel end  | 
| 
 Overall dimensions (L×W×H)(mm)  | 
 589×341.5×463  | 
 589×341.5×463  |