TM 55-1945-205-24-2 0053 00 3 0053 00 2 Biennially 3.0 Light Tower Engine (Cont’d) 2. Replace all coolant hoses and clamps. (WP 0180 00, WP 0181 00) 3. Replace all fuel hoses and clamps. Contact Specialized Repair Activity (SRA). 4. Replace battery. (WP 0142 00) 2 50 Operating Hours .2 Light Tower Engine 1. After the first 50 hours of operation, change the engine oil. (WP 0165 00) 2. After the first 50 hours of operation, replace the engine oil filter. (WP 0166 00) 2 100 Operating    Hours .3 Light Tower Engine Remove and clean air filter element. (WP 0175 00) 4 100 Operating Hours 2.0 Rigid Hull Inflatable Boat Motor 1. Drain and refill lubricant in gearcase. (WP 0332 00) 2. Replace engine fuel filter. (WP 0327 00) 3. Clean engine in-line fuel filter. (WP 0329 00) 4. Check anti-corrosion anodes for remaining material. (WP 0334 00) 5. Check battery connections for security. (WP 0337 00) 6. Tighten cylinder head screws. Contact Specialized Repair Activity (SRA). 7. Decarbonize engine pistons. Contact Specialized Repair Activity (SRA). 8. Check spark plugs for wear. (WP 0307 00) Table 1.  Preventive Maintenance Checks and Services. (Continued) ITEM NO. INTERVAL MAN- HOURS ITEM TO BE CHECKED OR SERVICED PROCEDURE EQUIPMENT NOT READY/ AVAILABLE IF: