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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Load Test

1. Switch the battery tester to the ammeter function.
2. Connect the positive and negative leads of the Alternator, Battery and Starter Tester to the corresponding battery terminals.
3. Connect the current probe to the generator B+ output lead, Circuit 38 (BK/O).
4. With the engine running at 2000 rpm, adjust the battery tester load bank to determine the output of the generator. Symptom Related Diagnostic Procedures