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)

Or, hide this message: temporarily or permanently

Thermostat, Engine Cooling

If the thermostat opening voltage is greater than 0.75 volt and less than 82°C (180°F), install a new water thermostat.
If the thermostat opening voltage is less than 0.75 volt and greater than 82°C (180°F), the water thermostat is good and should not be replaced.