4100 Series Heavy-Fleet Mechanical Spring Starter (12L–18L Engine Range)
Model Positioning
Specially calibrated for primary heavy-duty diesel engines ranging from 12.0L to 18.0L, the 4100 Series serves as an industry benchmark for core heavy-fleet emergency cranking. Engineered for standby generator sets, fire pump sets and marine auxiliary systems, the 4100 Series combines rugged structural reinforcement with precision torque discharge to handle severe vibration, thermal shocks, and frequent testing cycles in mission-critical operations.
Series-Specific Innovations & Highlights
Engine Application Matrix
Field-proven across 12L–18L heavy diesel engine platforms from premier global manufacturers, including Cummins (ISX/QSX15/K19 series), Caterpillar (C13/C15/C18 series), Weichai (WP12/WP13/WP17 series), Yuchai, Volvo Penta (D13/D16 series), Perkins, Shangchai, and Doosan.
Technical Specifications
| Model Series | 4100 Series |
| Engine Displacement Range | 12.0L to 18.0L |
| Charging Mechanism | Manual Hand-Crank Winding (Reinforced High-Stress Spring Pack) |
| Flange Standards | SAE 1 / SAE 2 / SAE 3 |
| Rotation Option | Clockwise (CW) / Counter-Clockwise (CCW) |
| Operating Environment | High and low temperature tolerance |
Parameters
| Spring Starter Series | 4100 Series | |
| HDP 2 | ||
| 4100 | ||
| Flange | SAE# | 1,2&3 |
| Engine Displacement | Liters (L)/cylinder & Max cylinder numbers | 2.0&6 |
| 1.6&8 | ||
| 1.5&12 | ||
| Max pinion torque | Nm | 126 |
| Max winding torque | Nm | 100 |
| Weight | kg | 23 |
| Turns to fully wind | turns | 2+13 |
| L | mm | 365 |
| A | mm | 117 |
| B | mm | 130 |
Dimensions (for reference)

| Spring Starter Series | L | A | B |
| 1100 Series | 280 | 117 | 130 |
| 2100 Series | 335 | 117 | 130 |
| 3100 Series | 368 | 133 | 143 |
| 4100 Series | 365 | 117 | 130 |
| 6100 Series | 368 | 133 | 143 |












