Test Run Of Engine - Rotax 915 i A SERIES Maintenance Manual

General note
Danger of life threatening injuries caused by the propeller, rotating and stressed
Always observe the engine from a safe place while it is running. Check that the cockpit
Preparation Preparation of the engine for test run:
• Ensure that all the operating fluids (engine oil, coolant, fuel) are replenished to the
• Make sure that no loose objects (e.g. tools) are left in the engine compartment.
• Inspect tight fit of the propeller.
• Anchor the aircraft suitably to the ground and fix wheel chocks. Ensure that the propeller
Test run Test run as follows
Step
Effectivity: 915 i A Series
Edition 0/Rev. 0
MAINTENANCE MANUAL

TEST RUN OF ENGINE

specified level.
zone is clear and safe before starting the engine.
Procedure
1 Engine start according to latest Operators Manual.
2
After engine start, observe oil pressure. Oil pressure has to be built up with-
in 10 sec.
3 Let engine run for approx. 2 min. at 2000 rpm. Then first use the throttle lev-
er to bring the engine to approx. 2500 rpm and then run through warming
up period, until the oil temperature reaches 50 °C (122 °F).
4 Check temperatures and oil pressure: At a steady oil temperature above 50
°C (122 °F) and oil pressure above 2 bar (29 psi) engine speed may be
increased.
5 Ignition check as per the current Operators Manual.
6 Conduct a short full throttle run and check that the engine reaches the max.
full power speed. Consult the pilot's operating handbook for maximum
speed, as it depends on the propeller used.
7 After full-load run, conduct a short cooling run to prevent formation of va-
pour lock in cylinder heads. This is necessary to prevent steam locks in the
cooling and fuel system after shut-down.
BRP-Rotax
m WARNING
parts of the engine!
is occupied by a competent operator.
12–20–00
Page 15
December 01 2017