TM 10-3930-669-10 Table 3-2.  Operator Troubleshooting Procedures - CONT. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION ENGINE (CONT) 2. ENGINE CRANKS BUT WILL NOT START. Step 1.  Check indication on fuel level gauge. If fuel level gauge reads empty, refill fuel tank (para 3-8). If fuel level gauge indicates there is fuel in the tank, go to step 3. Step 2.  Open fuel tank cap and visually check fuel level (Para 3-8). If tank is empty, fill tank and notify Unit Maintenance that gauge does not work. If tank is not empty, go to step 3. Step 3.  Inspect fuel lines and fittings. If fittings are loose or fuel lines are damaged, notify Unit Maintenance. If fittings and fuel lines are OK, go to step 4. Step 4.  Drain fuel/water separator (Para 3-11) and restart engine (Para 2-10.  d.). If engine still does not start, notify Unit Maintenance. If fuel is OK, go to step 5. WARNING If   NBC   exposure   is   suspected,   all   air   filter   media   should   be   handled   by   personnel   wearing protective  equipment.    Consult  your  unit  NBC  officer  or  NBC  NCO  for  appropriate  handling  or disposal procedures. Step 5.  Inspect air filter for clogging (Para 3-7). If air filter is clogged, replace filter. If air filter is OK, go to step 6. 3-4