LEMON Manuals: Even more car manuals for everyone
Home >> Subaru >> 2016 >> Forester 2.5i, Eng CD FB25BA, Standard Trans >> Repair and Diagnosis >> Electrical >> Starting/Charging Systems (H4DO) >> Starter >> Inspection >> Performance Test

Performance Test

The starter should be submitted to performance tests whenever it has been overhauled, to assure its satisfactory performance when installed on the engine.

Three performance tests, no-load test, load test, and lock test, are presented here; however, if the load test and lock test cannot be performed, carry out at least the no-load test. For these performance tests, use the circuit shown in figure.

Fig 1: Starter Circuit Diagram
G10403994Courtesy of SUBARU OF AMERICA, INC.
  1. Adjust the variable resistance with the switch on until the voltage is 11 V, and read the value displayed by the ammeter to measure starter speed. Compare these values with the standard.

    No-load test (standard): 

    Voltage/Current 

    Non-turbo CVT model 

    Max. 11 V/90 A or less

    Non-turbo MT model 

    Max. 11 V/95 A or less

    Turbo model 

    Max. 11 V/90 A or less

    Rotating speed 

    Non-turbo CVT model 

    2, 370 r/min or more

    Non-turbo MT model 

    2, 500 r/min or more

    Turbo model 

    2, 000 r/min or more

  2. Apply the specified braking torque to starter. The condition is normal if the current draw and starter speed are within standard.

    Load test (standard): 

    Voltage/Load 

    Non-turbo CVT model 

    7.5 V/10.65 N.m (1.1 kgf-m, 7.8 ft-lb)

    Non-turbo MT model 

    7.5 V/8.84 N.m (0.9 kgf-m, 6.5 ft-lb)

    Turbo model 

    7.7 V/16.7 N.m (1.7 kgf-m, 12.3 ft-lb)

    Current/Speed 

    Non-turbo CVT model 

    300 A/840 r/min or more

    Non-turbo MT model 

    300 A/870 r/min or more

    Turbo model 

    400 A/710 r/min or more

  3. With the starter stalled, or not rotating, measure the torque developed and current draw when the voltage is adjusted to standard voltage.

    Lock test (standard): 

    Voltage/Current 

    Non-turbo CVT model 

    4 V/780 A or less

    Non-turbo MT model 

    4 V/680 A or less

    Turbo model > 

    3.5 V/960 A or less

    Torque 

    Non-turbo CVT model 

    20 N.m (2.0 kgf-m, 14.8 ft-lb) or more

    Non-turbo MT model 

    17 N.m (1.7 kgf-m, 12.5 ft-lb) or more

    Turbo model 

    31 N.m (3.2 kgf-m, 22.9 ft-lb) or more