TM 10-3930-669-10 Table 3-2.  Operator Troubleshooting Procedures - CONT. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION ENGINE (CONT) Step 2.  Inspect blower belt. If blower belt is frayed or missing, notify Unit Maintenance. If blower belt is OK, notify Unit maintenance. 7. ENGINE DOES NOT DEVELOP FULL POWER OR IDLES ROUGH. 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 1.  Inspect air filter for clogging (Para 3-7). If air filter is clogged, replace filter. If air filter is OK, go to step 2. Step 2.  Drain and inspect fuel in fuel/water separator (Para 3-11). If fuel is contaminated, notify Unit Maintenance. If fuel is OK, notify Unit maintenance. ELECTRICAL SYSTEM 1. GAUGE LIGHTS DO NOT OPERATE. Check front light switch. If front light switch is not in the ON position, set switch to ON position. If lights do not operate, check fuse 6. If fuse is OK, notify Unit Maintenance. 3-6