Cold Weather Operation; Cold Start; Icing Due To Water In Fuel - Rotax 912 i series Operator's Manual

3.10) Cold weather operation

General note
Coolant
Lubricant

Cold start

Icing due to water
in fuel
Remedy
Effectivity: 912 i Series
OM Edition 1/Rev. 2
Generally, an engine service should be carried out before the start
of the cold season.
For selection of coolant and mixing ratio, see "Coolant",
Chapter 2.2).
For selection of oil, see table of Lubricants
- As performance of electric starter is greatly reduced when hot,
limit starting to periods not much longer than 10 sec.
Remedy - Cold start
Step
1 Use of multigrade oil with the low end viscosity code of 5 or
10.
2 Check the Gap electrode on spark plug or fit new spark
plugs according to Maintenance Manual Line.
3 Preheat engine.

Icing due to water in fuel

NOTICE
WARNUNG
Water in fuel will accumulate at the lower parts of the fuel system
and leads to freezing of fuel lines, filters or jets.
- Use non-contaminated fuel
- Generously sized water separators
- Fuel lines routing inclined
- Prevent condensation of humidity, i. e avoid temperature dif-
ferences between aircraft and fuel.
BRP-Powertrain
Procedure
Fuels containing alcohol always carry a small
amount of water in solution. In case of tem-
perature changes or increase of alcohol con-
tent, water or a mixture of alcohol and water
may settle and could cause troubles.
Chapter 2.4).
page 3-15
April 01/2014