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Oil temperature
4.8) Engine shut-off
4.9) Cold weather operation
Coolant
Lubricant
Cold start
Page 4-10
Ed.4/January 01 2023
Step
Procedure
1
Avoid operation below normal oil temperature (90 to 110
°C / 194 to 230 °F), as possible formation of condensa-
tion water in the lubrication system badly influences the
oil quality.
To evaporate possibly accumulated condensation water,
at least once a day 100 °C (212 °F) oil temperature must
be reached.
Normally the cooling down of the engine during descending and
taxiing will be sufficient to allow the engine to be shut off as
soon as the aircraft is stopped.
At increased operating temperatures make an engine cooling
run of at least minimum 2 minutes.
Generally, an engine service should be carried out before the
start of the cold season.
For selection of coolant and mixing ratio, see
For selection of oil, see table of Lubricants
• With throttle closed and choke activated (open throttle ren-
ders starting carb ineffective)
• Be aware, no spark below crankshaft speed of 220 rpm (pro-
peller speed of 90 rpm)
• As performance of electric starter is greatly reduced when
hot, limit starting to periods not much longer than 10 sec.
With a well charged battery, adding a second battery will not
improve cold starts
Remedy - Cold start
Step
Procedure
1
Use of multigrade oil with the low end viscosity code of 5
or 10.
2
Check electrode gap of spark plugs and if worn fit new
spark plugs. See Maintenance Manual Line (MML) of the
respective engine type.
3
Preheat engine.
BRP-Rotax
Chapter
2.3.
Chapter
2.5.
Effectivity: 912 Series
Rev. 1
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