Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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No-Load Test


The following test must be performed within 3 to 5 seconds to avoid burning out the coil.

Fig. 4 No-load performance test connection locations:






1. While keeping starter immobile, connect ammeter in series as shown in Fig. 4.
2. Ensure starter rotates smoothly with pinion moving out. With battery voltage 11.5V, ammeter should read 120A or less.