Performance Test

The starter is required to produce a large torque and high rotating speed, but these starter characteristics vary with the capacity of the battery. It is therefore important to use a battery with the specified capacity whenever testing the starter.

The starter should be checked for the following three items:

• No-load test

  Measure the maximum rotating speed and current under a no-load state.

• Load test

  Measure the magnitude of current needed to generate the specified torque and rotating speed.

• Stall test

  Measure the torque and current when the armature is locked.

1. No-load test

   Under no-load state, measure its rotating speed and current, using the specified battery. Measured values must meet the following standards:

   No-load test (Standard): 

   Voltage/Current 

   11 V/90 A, or more 

   Rotating speed 

   228000-7131: 3,000 rpm, or more 

   228000-7141: 2,900 rpm, or more 

   Fig 1: Identifying Terminal 50

   Courtesy of SUBARU OF AMERICA, INC.
2. Load test (For reference)

   Perform this test to check maximum output of starter. Use test bench which is able to apply load (brake) to starter. Measure torque value and rotating speed under the specified voltage and current conditions while controlling braking force applied to starter.

   CAUTION: Change engagement position of overrunning clutch and make sure it is not slipping.

   Load test (Standard):

   228000-7131 

   Voltage/Load 

   8 V/9.8 N.m (1.0 kgf-m, 7.2 ft-lb) 

   Current/Speed 

   280 A, or less/900 rpm, or more 

   228000-7141 

   Voltage/Load 

   8 V/13.7 N.m (1.4 kgf-m, 10.1 ft-lb) 

   Current/Speed 

   370 A, or less/880 rpm, or more 

   Fig 2: Performing Test To Check Maximum Output Of Starter

   Courtesy of SUBARU OF AMERICA, INC.
3. Stall test

   Using the same test equipment used for load test, apply brake to lock starter armature. Then measure voltage, current, and torque values.

   Measured values must meet the following standard.

   Stall test (Standard): 

   228000-7131 

   Voltage/Current 

   5 V/800 A, or less 

   Torque 

   27.5 N.m (2.8 kgf-m, 20.3 ft-lb), or more 

   228000-7141 

   Voltage/Current 

   5 V/1,050 A, or less 

   Torque 

   27.5 N.m (2.8 kgf-m, 20.3 ft-lb), or more 

   Fig 3: Using Same Test Equipment Used For Load Test

   Courtesy of SUBARU OF AMERICA, INC.