DOCUMENT NUMBER:
L500-912.820 ISSUE JUL 20, 2016
AMENDMENT: 00
DATE: 
CHAPTERPAGE 526
MAINTENANCE MANUAL STEMME S12
5.4.9 ENGINE AND ENGINE MOUNTINGS
(1) - use of leaded fuel more than 30% of operation
Type and Subject of Inspection
Break-in
Aircraft 100 hr
Engine 100 hr
Engine 200 hr
Engine 600 hr
Annual
Refer to
Section
Sign-o
1. Engine cleaning.
X X X
7.4.1.3
2. Visual inspection of engine
and auxiliaries.
X X X
7.4.1.4
3. Engine check for leakage.
X X X
7.4.1.5
4. Check of engine auxiliaries.
X X X
7.4.1.6
5. Check of waste-gate.
X X X
7.4.1.7
6. Lubricate the waste-gate axle
(waste-gate ap).
X X X
7.4.1.7
7. Check of engine gearbox.
X X X
7.4.1.8
8. Check magnetic plug for metal
particles or foreign matter.
X X X
7.4.1.9
9. Check of reduction gear
wheels.
X X
7.4.1.10
10. Removal/Assembly of the two
carburetors and carburetor
inspection.
X X X
7.4.1.11
1 1. Inspect the carburetor sockets
for damages and abnormali-
ties, checking for cracks, wear
and good condition. Take note
of changes caused by tem-
perature inuence.
X X
7.4.1.11
12. Check oat weight.
X X X
7.4.1.11
13. Check carburetor synchroniza-
tion – mechanical or pneumat-
ic synchronization.
X X
14. Check condition of fuel lines,
pressure connection lines and
compensating tube assy. at
carburetors and air box.
X X X
7.4.6.2
15. Check engine wiring and ca-
bles.
X X X
7.4.1.12
16. Visual inspection of the tem-
perature sensor and the oil
pressure sensor, inspect for
tight t and good condition.
X X
7.4.1.12
17. Check of V-belt tension of
additional auxiliary generator.
X X X
7.4.1.13