TM 10-4930-204-13Table 3-2. Operator TroubleshootingMALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTIONENGINE1. ENGINE FAILS TO START.Step1.Step2.Step 3.Step4.Check ignition switch for RUN position.Position ignition switch to RUN.Check for empty fuel tank.Refill fuel tank if empty or low.Check for closed fuel shutoff valve.Open fuel shutoff valve (fig. 2-4).Check for dirty or clogged air cleaner.Service air cleaner (fig. 3-2).2. ENGINE MISSES, OPERATES ERRATICALLY, OR LOSES POWER.Check for closed or partially closed choke.Fully open choke (fig. 2-3).3. ENGINE OVERHEATS OR KNOCKS.Check for poor ventilation across engine.Provide proper engine ventilation.4. ENGINE EXHAUST SMOKE EXCESSIVE.Step.1.Check for closed or partially closed choke.Fully open choke (fig. 2-3).3-10
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