TM 10-3930-671-10 b. Truck Start-Up (1) Place master electrical switch (1) to ON. CAUTION If engine fails to start within 10 seconds, wait 3 or 4 seconds before re-engaging starter to prevent possible serious damage to starter or engine. (2) Insert key (2) into ignition switch (3) and turn to START until engine starts.  After engine starts, return key to RUN position. CAUTION If engine oil light illuminates more than 15 seconds after starting, shut down engine immediately and notify supervisor. (3) Allow engine to warm-up to normal operating temperature before operating with a load. (4) Perform operator PMCS Procedures designated During in the interval column (Table 3-1). 2-7