ENGINE
Refer to and follow your engine manufacturer’s manual for maintenance
procedures on engine.
ENGINE MOUNTING
Inspect engine mounting parts, hardware and bolts for condition (wear,
distortion, cracks, etc.) and security.
Check engine mount bolts and nuts for security.
Inspect rubber engine mounts for condition (deterioration, distortion, cracking,
etc.). Replace if necessary.
LUBRICATION
Drain engine oil and replace with fresh oil (every 50 hours with Mo Gas, 25 hours
with Avgas)
Check engine drain plug and oil sump plug for metal particles.
Replace oil filter each time oil is changed.
CARBURETION AND AIR INTAKE SYSTEM
Clean and re-oil or replace air filters.
Check carburetors for proper position and security.
Check throttle linkage for condition and operation.
Remove and clean float bowls.
Check for carburetor synchronization.
EXHAUST SYSTEM
Check exhaust system for cracks, leaks and security (every preflight). Replace
manifold gasket if necessary.
Check mounting hardware and springs for condition (cracks, wear, spring
fatigue) and security (every preflight).
Apply a bead of silicone rubber on springs to extend spring life.
Lubricate exhaust joints with high temperature anti-seize compound.
Check for adequate clearance from other parts, hoses, wires, etc.
PROPELLER
Check propeller blades and hub for nicks, splits, cracks, excessive wear or other
damage.