No-Load Test

Clamp starter to test bench or in vise. Set up test equipment as shown in illustration. See Fig 1. Close switch to engage starter. Measure current draw, rotating speed, and voltage drop. See NIPPONDENSO STARTER SPECIFICATIONS table at end of article.

Fig 1: Testing Starter No-Load Performance
Courtesy of SUBARU OF AMERICA, INC.
Low rotating speed or excessive current draw may be caused by high friction rotating resistance caused by worn bushings or improper assembly.