Inspect the fuel pump lines near the pump for failure and leakage due to chafing, on aircraft which incorporate fuel pumps with a metal filter bowl.
Due to failures of the Magnesium Die Cast Nose Wheel (which bears the number 34206 in raised letters), this wheel should be replaced by a Permanent Mold Aluminum Alloy Nose Wheel.
Install a new fuselage gas tank overflow line and replace the imperial brass compression sleeve with a rubber washer.
To provide additional bearing area and more positive locking action for the aileron control stop adjustment screw.
Due to the possibility of a defective fitting on the upper end of the control column shaft in the aileron control system, the system should be tested to a load of 94 pounds.
Inspection of the flexible hose in the engine breather line for contraction and possible clogging.
Replacing the original muffler on the serial numbers listed above with a new muffler.