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<img src='content_image/600913.jpg'>

## Ignition System 

• Inspect ignition system wires to spark plugs. 

• Inspect spark plug caps and wires to CDI units to ensure they are secure and fastened. [Figure 5-56] 

• Ensure ignition switches are turned off. 

<img src='content_image/600915.jpg'>

##  Cooling Systems 

Ensure there is clear airflow for any cooling system fan or radiator. Ensure no insects or birds created an obstruction to the airflow for the engine cooling system. 

Air cooled—rotate the propeller and ensure that the cooling fan rotates also. 

Water cooled—check the coolant level to ensure there is cooling fluid in the system. 

Four stroke with additional oil coolers—ensure the oil cooler has clear airflow and that nothing is blocking it. 

## Exhaust Systems 

Inspect exhaust attachment to engine, and EGT senders. Slightly jiggle the exhaust system to inspect the springs holding it together. All springs must be secure. Inspect 

the condition of exhaust system for cracks and attachment security. [Figure 5-57] 

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## Propeller Gearbox 

Rotate the propeller in the proper direction only and inspect blades for cracks or nicks. Listen and feel for smooth operation and engine compression while rotating the propeller. Inspect propeller attachment to the gearbox and the gearbox attachment to the engine. 

## Throttle System 

Check all throttle controls for smooth operation and proper travel and locking. Also check choke and/or primer system for proper operation and travel. 

##  Flight Deck Inspection 

The following should be performed for a flight deck inspection: 

• Check seat security and proper adjustment for pilot and passenger. 

• Check seat belt attachment and seatbelt operation. 

• Inspect the gauges for security and readability. 

• Switch electrical master on and check gauges for expected readings. [Figure 5-58] 

• Check ballistic parachute handle for security and proper location. 

##  Fuel 

Overall, particular attention should be paid to the fuel quantity, type/grade, and quality. Modern WSC two- and four-stroke engines are designed to use auto gas with various octane ratings as specified by the manufacturer for different models. If auto gas is stored for more than 3 weeks, octane value may fall below the recommended rating. In this situation, it is best to drain the gas and use fresh gas. For engines designed for auto gas, aviation gasoline (AVGAS) 100LL can be mixed and used 

