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The battery gives off explosive gases; keep sparks, flames and cigarettes away. Provide
adequate ventilation when charging or using batteries in an enclosed space. The battery
contains sulphuric acid (electrolyte). Contact with skin or eyes may cause severe burns,
wear protective clothing and a face shield.
•
If electrolyte gets on your skin, flush with water.
•
If electrolyte gets in your eyes, flush with water for at least 15 minutes and call a
physician immediately.
•
Electrolyte is poisonous, if swallowed, drink large quantities of water, follow with milk of
magnesia and call a physician immediately.
4.13. SECONDARY STRUCTURES AND SYSTEMS - CARBURETTOR HEAT
Evaporation of the fuel at low pressure in the intake tract can lead to carburettor icing in humid conditions
particularly between +10 and -5°C ambient temperature. Icing is generally more prevalent at part throttle
settings.
Symptoms include rough running, power loss and sometimes throttle sticking open. Throttle
sticking may also ocurr through cable freezing if not correctly maintained - see Maintenance Section.
Rotax 912/912S Carburettor Heat System
A carburettor body warming system supplied with heat from the coolant is installed.
The radiator cover should be adjusted to obtain at least 80C coolant temperature for the system to work
effectively. Power reduction due to intake temperature rise is small and the system can be used with with
carb.heat selected ON continuously. Pipes and connections should be checked regularly for
condition/chafing. See maintenance section.
4.14. SECONDARY STRUCTURES AND SYSTEMS - RADIATOR COVERS
912/912S Oil Radiator Jacket
In accordance with P&M Service Bulletin No: 0094, in which it was noted that it was desirable for the oil
temperature on aircraft equipped with the Rotax 912/912S four stroke engines to reach 100°C at least once
per flight, P&M now supply a neoprene jacket which may be fitted to the oil radiator when the aircraft is
operated in cool ambient temperature. The purpose of this jacket is:
1. To make it easier to reach 100°C in normal use, in order to minimise the risk of humidity building
up in the oil system.
2. To speed up the warm-up procedure.
Note! If your aircraft regularly reaches 100
Usage
The oil temperature on the 912/912S depends on the use to which it is put. Extended periods at high RPM in
hot climates will result in temperatures of 100°+C, whereas at a typical cruise of 4000rpm in an ambient
temperature of 23°C or less, 75-85° is the normal oil temperature. Whether to use the jacket with 100% or
50% coverage, or indeed at all, becomes a function of how the engine is used and in what ambient
temperatures. The responsibility for ensuring that the oil temperature remains within the correct limits is
therefore the pilot's. Regular in-flight checks should be made to ensure that the oil temperature remains
within the desired range of 85-100°C and that the following limitations are respected:
1. Lower oil limit:
2. Upper oil limit
Quik & Quik GT450 Maintenance Manual
th
29
March 2007
Issue 1
WARNING
!
°
C in normal operations, there is no need to fit the cover.
50°C
912 engine: 140°C 912S engine: 130°C
Page 33 of 54
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