2-12 ENGI NE TUNE-UP - Initial Idle Speed Fig . 2-41 Check float level. ~ 6 . Float level is satisfa ctor y if the fuel level is up to the standard line when the engine is idling. For adjustment, refer to carbu retor secti on. INITIAL IDLE SPEED Check the f oll owi ng items beforehand. 1. Coolant temperature - A pproximately BO °C (180° F) 2. Choke valve - Ful l open 3. A ccessory parts (w ipers, heater, lights, air conditioner, etc. .l - A ll switched o ff . 4. Vacuum lin es - A ll lines connected. 5. Ignit ion timing - Ini t ial set position 6. Transmission - In "N" BEST IDLE (Except for USA and ECE) Fig. 2-42 1. Set to 650 rpm by turn ing th e id le speed adjusting screw .
Ad just ing Screw Ad justin g Screw Idle Mi xtur e Id le Speed Fig. 2-43 2. Set to the max. speed or max. vacuum by turning the idle mix ture adjusting screw. 3. Repeat the above adjust ment s unti l the specified rpm and max imum vacuum wi ll be obtained. Ini ti al idle speed 600 Idle speed 650 ± 50 rpm Vacuum 420 mmHg (16 .5 inHg)