Service difficulty report · Bowl

Difficulty date
October 18, 2006
Submitted
June 7, 2007
Operation
General aviation
Engine
Rotax ROTAX914
Part
Bowl
Part number
963178
Condition
Distorted
Location
Carburetor
Part time
330 hours
Component
Carburetor
Component part number
887097
Stage of operation
IN
How discovered
9
Nature of condition
W
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

(CAN) CARB FLOAT BOWL NUT WAS OVERTORQUED DURING A PREV MAINTENANCE EVENT. THIS DISTORTED THE FLOAT BOWL AND CAUSED THE FLOAT PINS TO BEND OUTWARDS. THIS CAUSED THE FLOATS TO CONTACT THE SIDE OF THE BOWL DURING OPERATION. OPERATOR NOTED INTERMITTENT ROUGH RUNNING THAT WAS ELIMINATED AFTER FLOAT BOWL WAS REPLACED. MM CONTAINS A CONVERSION ERROR THAT INCORRECTLY LISTS THE TORQUE FOR THIS NUT IN FOOT POUND INSTEAD OF INCH POUNDS. THE METRIC TORQUE LISTED IS CORRECT. THIS MM IS CURRENTY BEING REVISED. (TC NR 20070315006)