TM 10-3930-671 -10 4-3.  TROUBLESHOOTING PROCEDURES. Table  4-2  contains  the  malfunctions  listed  in  Operator  Troubleshooting  Symptom  Index  (Table  4-1),  test  and  inspection instructions required to determine cause of malfunction, and corrective actions for repairing the faulty equipment. Table 4-2.  Operator Troubleshooting Procedures Malfunction Test or Inspection Corrective Action ENGINE 1. ENGINE WILL NOT START. Step 1. Check that engine is cranking. If engine will not crank, go to ELECTRICAL SYSTEM troubleshooting. If engine will crank, go to Step 2. Step 2. Check indication on fuel gauge (Para 3-9 [a]). If fuel gauge reads empty, refill tank (Para 3-9 [b]). If fuel gauge indicates there is fuel in tank, go to Step 3. Step 3. Check that fuel shutoff valve is open (Para 2-3). If valve is closed, open valve (Para 2-3). If valve is open, go to step 4. Step 4. Check air cleaner restriction indicator. If yellow flag is raised, notify unit maintenance. If yellow flag is not raised, notify unit maintenance. 2. ENGINE DOES NOT RUN EVENLY. Step 1. Check air cleaner restriction indicator. If yellow flag is raised, notify unit maintenance. If yellow flag is raised, go to Step 2. 4-2