S40

S40

The S40 Spring Starter is designed for diesel engines up to 7.8 litres, delivering dependable manual starting in all conditions.

Ideal for engines requiring more power than the S30 can provide, the S40 is a robust, clockwise-rotation starter used across a wide range of applications and engine brands.

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SOLUTION DETAILS

Built for larger diesel engines

The S40 Spring Starter is suitable for diesel engines up to 7.8 litres (476 cubic inches) and is available as a clockwise rotation model. It is the next step up from the S30, providing greater capability for engines with higher capacity or those requiring reliable starting in low temperatures.

Model range compatibility

Smaller engines can be started using the S20 or S30 spring starters, while larger engines may require the S50, S60, or S70 models.

Proven performance

The S40 is widely used across many engine brands, including Caterpillar, Cummins, Detroit, Man, Perkins, Scania, and Volvo. Its durable manual design makes it a trusted solution in demanding environments where reliability is critical.

Key Advantages

  • Engine capacity: Suitable for diesel engines up to 7.8 litres (476 cubic inches).
  • Ideal step up from S30: Designed for engines needing more torque or cold-start capability.
  • Wide application: Compatible with leading engine brands including Caterpillar, Cummins, Detroit, Man, Perkins, Scania, and Volvo.
  • Manual reliability: Operates without the need for batteries or external power sources.
  • Durable construction: Built for consistent performance in all weather conditions.

Optional Features and Configurations

Clockwise Rotation

Technical Specs

Performance

Rotation

S40C: clockwise

Engine capacity

1.3 litres (79.3 cubic inches) per cylinder; 6 cylinders maximum

Pinion type

11 to 13 teeth 10/12 F/stub<; 11 to 13 teeth 8/10 F/stub; 11 teeth 6/8 F/stub; 9 to 13 teeth Mod 3; 10 to 13 teeth Mod 3

Pinion to flange face

20mm, 28mm, 47mm and other variations.

Maximum torque at pinion

126 Nm (93 ft/lb)

Maximum winding handle torque

81 Nm (60 ft/lb)

Turns to fully wind

2.0 turns to engage11.5 turns to fully charge

Winding handle position

Variable in 8.5-degree increments

Cold start

Starting aid below 5 degrees Celsius

Physical

Mass

18 kg (39.7 lb)

Mounting

Flange-mounted SAE 1; SAE 2; SAE 3; SAE 4

Finish

Standard finish: zinc-plated body and housing; body painted with a further coat of primer and topcoat.

Compare Solutions

Model

Max Engine Size

Max Torque

S20

1-4 litres

30 Nm

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S30

1-5 litres

40 Nm

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S40

3-8 litres

66 Nm

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S50

4-12 litres

84 Nm

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S60

4-12 litres

84 Nm

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S70

4-12 litres

84 Nm

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