| MODEL | IF173F/E | IF178F/E | IF186FA/E | IF186FAS/E | IF188F/E |
| Engine type | Single cylinder,4-stroke,air-cooled,direct injection,diesel engine | Single cylinder,4-stroke,air-cooled,direct injection,diesel engine | Single cylinder,4-stroke,air-cooled,direct injection,diesel engine | Single cylinder,4-stroke,air-cooled,direct injection,diesel engine | Single cylinder,4-stroke,air-cooled,direct injection,diesel engine |
| Bore x stroke [mm(in)] | 73x59(2.87x2.36) | 78x62(3.07x2.44) | 86x72(3.39x2.83) | 86x72(3.39x2.83) | 88x75(3.46x2.95) |
| Dispiacement [ml(cu.in)] | 247(15.25) | 296(18.06) | 418(25.5) | 418(25.5) | 456(27.82) |
| Engine speed (rpm) | 3000/3600 | 3000/3600 | 3000/3600 | 1500/1800 | 3000/3600 |
| Max output power [kW(HP)/rpm] | 4(5.0)/3000, 4.07(5.5)/3600 | 4.2(5.4)/3000, 4.4(6)/3600 | 6.3(9.0)/3000,6.9(10)/3600 | 6.3(9.0)/3000,6.9(10)/3600 | 7.5(9.5)/3000, 8.2(10.2)/3600 |
| Rated output power [kW(HP)/rpm] | 3.5(4.05)/3000, 4.05(5.0)/3600 | 3.7(5.2)/3000, 4.0(5.4)/3600 | 5.7(8.0)/3000,6.3(9.0)/3600 | 5.7(8.0)/3000,6.3(9.0)/3600 | 6.8(10)/3000, 7.5(11)/3600 |
| The output axis direction of rotation | From the output shaft end as counterclockwise | From the output shaft end as counterclockwise | From the output shaft end as counterclockwise | From the output shaft end as counterclockwise | From the output shaft end as counterclockwise |
| Valve clearance | 0.1-0.15(cold state) | 0.1-0.15(cold state) | 0.1-0.15(cold state) | 0.1-0.15(cold state) | 0.1-0.15(cold state) |
| Injection pressure (kgf/cm³MPa) | 200(19.6) | 200(19.6) | 200(19.6) | 200(19.6) | 200(19.6) |
| Fuel supply advance angle | 19º±1 | 19º±1º | 19º±1 | 19º±1 | 20º±1º |
| Fuel tank volume [L(gal.)] | 2.5(0.55) | 3.5(0.77) | 5.5(1.21) | 5.5(1.21) | 5.5(1.21) |
| Fuel | 0#or-10#light diesel oil | 0#or-10#light diesel oil | 0#or-10#light diesel oil | 0#or-10#light diesel oil | 0#or-10#light diesel oil |
| Lubrication way | Pressure spray compound | Pressure spray compound | Pressure spray compound | Pressure spray compound | Pressure spray compound |
| Lube brand | AE10W30(above cc grade) | SAE10W-30(above CC grade) | SAE10W-30(above CC grade) | AE10W30(above cc grade) | AE10W30(above cc grade) |
| Lubrication oil volume [L(gal.)] | 0.8(0.16) | 1.1(0.24) | 1.65(0.36) | 1.65(0.36) | 1.65(0.36) |
| Starting way | Recoil type hand starting or electric starting | Recoil type hand starting or electric starting | Recoil type hand starting or electric starting | Recoil type hand starting or electric starting | Recoil type hand starting or electric starting |
| Overall dimension (L x Wx H)[mm(in)] | 335x380x415(13.19x14.96x16.39) | 385x420x450(15.16x16.54x17.72) | 420x440x495(16.54x17.32x19.49) | 420x440x495(16.54x17.32x19.49) | 422x460x498(16.61x18.11x19.61) |
| Dry weight [kg(ibs.)] | ≦26(57.2) | ≦33(72.6) | ≦48(105.6) | ≦48(105.6) | ≦48(105.6) |
