www.changlin.com.cn 19 mm Screwdriver and Tachometer First, loosen the locknut and back out the bumper spring screw until there is no change in engine speed. NOTE: The speed should drop 30-40 RPM as the bumper spring screw is backed out. 13 mm Screwdriver and Tachometer Loosen the locknut and adjust the idle screw to 30-40 RPM less than the desired speed. Turn the idle screw counterclockwise to decrease RPM; clockwise to increase RPM. Tighten the idle screw locknut. Torque Value: 8N - m [72 in-lb] Turn the bumper spring clockwise until the data plate specified idle speed is obtained with normal idle operation accessory loads (i.e, air conditioning, hydraulic loads, transmission).
Tighten the locknut. Torque Value: 8N.m [72 in-lb] RQV and RQVK Governor 10 mm Screwdriver and Tachometer Idle adjustment on fuel injection pumps with RQV and RQVK governors require setting of the idle adjustment screw. Loosen the locknut and turn the idle adjustment screw counterclockwise to raise the RPM; clockwise to decrease the idle speed until the data plate specified idle speed is attained with normal idle operation accessory loads (i.e.transmission, hydraulic, air conditioning). Tighten the locknut. Torque Value: 8N.m [72 in-lb] 117 / 149 pages