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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Carburetor Feedback Testing

1. Connect a tachometer to the engine.

2. Start the engine and warm up the engine to normal operating temperature.

3. Insert the exhaust analyzer probe into the tailpipe.

4. Run engine at 2500 RPM.

5. Check CO at tail pipe and note reading at 2500 RPM.

6. If CO is greater than 2% at 2500 RPM, replace the Jet Mixture Solenoid Valve.