Insufficient or damaged baffling.
Repair or complete baffling. Seal leakages.
Carburetor shielding defective or missing
(2 carburetors).
Replace carburetor shielding.
Cooling air inlet disturbance (missing
spinner, cross section too small).
Install spinner, increase air inlets in cowling.
Fresh air and heating system ducts
defective.
Cooling air outlet disturbance (Cross section
too small or cowlflap does not open suffi-
ciently).
Increase air outlet in cowling.
Change oil. Use specified oil.
Remove and clean oil screen, check
condition and replace, if necessary.
Oil temperature sensor or indicator
defective.
Check temperature sensor and indicator and
replace as necessary.
Lack of oil in the oil sump.
Check oil level and refill oil as necessary.
Note:
If the engine was accidently operated with-
out engine oil after performing an oil change
– expect severe engine damage. A
teardown inspection and repair ist strongly
recommended for safe operation.
Repair or replace oil pump.
Oil pressure regulating piston or spring
defective.
Replace regulating piston or spring.
Oil loss due to blocked crankcase
ventilation.
Clean ventilation, replace and properly install
breather line (no bucklings or contractions).
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