TM 5-4320-215-12 Inspection Service Quarterly ENGINE-Continued 13 If the compression tests show poor compression, report the condition to field maintenance. 14 14 Engine breather.  Inspect the engine breather for damage and clogging. 14 Clean a dirty or clogged breather or replace a defective breather (TM 5-2805-209-12). 15 15 Oil filter.  Inspect the oil filter for loose mounting, dirt, and leaks. Inspect the oil lines for leaks and deterioration. 15 Tighten all loose connections and mounting hardware.  Refer to TM 5- 2805-209-12 and service the oil filter.  Replace a damaged oil filter (TM 5-2805-209-12). 17 17 Fan and shroud.  Inspect the fan and shroud for insecure mounting, leaks, or misalinement. 17 Refer to TM  6-2805-209-12 and replace a damaged fan.  Tighten all loose mounting hardware. 18 18 Belts and pulleys.  Inspect the belt for cracks, breaks, fraying, and im- proper adjustment.  Inspect the pulleys for cracks, chips, and cor- ing. 18 Adjust or replace the belt as necessary (par.  49).  Report a defective pulley to field maintenance. 20 20 Governor and linkage.  Inspect the governor and linkage for cracks, breaks, loose mounting, and improper operation.  Inspect the governor for evidence of leakage. 20 Refer to TM 6-2805-209-12 and correct all deficiencies noted. 22 22 Primer.  Inspect the primer for improper operation, loose mounting, and leakage. 22 Refer to TM 5-2805-209-12 and correct all deficiencies noted. 38 38 Fuel pump.  Inspect the fuel pump for cracks, breaks, loose mounting, and leaks. Refer to TM 5-2805-209-12 and correct all deficiencies noted. 39 39 Carburetor and throttle control rod.  Inspect the carburetor and control rod for cracks, breaks, and improper adjustment, Inspect the carbure- tor for evidence of leakage.  Inspect the control rod for improper operation. 39 Refer to TM 5-2801-209-12 and correct all deficiencies noted 40 40 Fuel strainer.  Inspect the fuel strainer for cracks, breaks, leaks, and other damage. 40 Refer to TM 5-2805-209-12 and correct all deficiencies noted. 41 41 Air cleaner.  Inspect the air cleaner for insecure mounting, defective hose,.  and clogged filter element. 41 Refer to TM 5-2805-209-12 and correct all deficiencies noted. 43 43 Fuel tank, cap, and strainer.  Inspect the fuel tank for leaks.  Inspect the fuel tank cap for a defective gasket and insecure mounting.  In- spect the fuel strainer for hole. 43 Tighten or replace loose or missing mounting hardware.  Replace a fuel tank cap or gasket as necessary.  Replace a defective fuel strainer.  Re- place a defective fuel tank (par.  47). 44 44 Fuel lines.  Inspect the fuel line for cracks, breaks, kinks, and leakage. 44 Tighten all loose connections.  Replace all defective fuel lines (par.  47). 46 46 Spark plugs and leads.  Inspect the spark plugs for cracked porcelain, burned electrodes, carbon deposits, and incorrect gap.  The correct gap is 0.025 inch.  Use a suitable ,park plug tester and test each spark plug for improper operation.  Inspect spark plug leads for damage and loose or corroded connections. 27