12. OPERATION 12.18 STOPPING ENGINE NOTICE If the engine is abruptly stopped before it has cooled down, en- gine Iife may be greatly shortened. Consequently, do not abruptly stop the engine apart from an emergency. In particular, if the engine has overheated, do not abruptly stop it but run it at medium speed to allow it to cool gradually, then stop it. 1. Run the engine at low idling speed for about 5 minutes to allow it to gradually cool down. 2. Turn the key in starting switch a to the OFF position and stop the engine. 3. Remove the key from starting switch a . PC450-ENG 2-78