BushCADDY LSA Pilot Operating Handbook
Rev.03 5 March, 2008
Page 48 of 52
3. Avoid prolonged ground running at elevated RPM. Engine can be over heated, remember air
ducts are designed for in flight cooling. NOT E: remove AL L plastic bungs on engine.
E XHAU ST (4) CAR BY (2) OIL VENT (1) F U EL PUMP (1)
4. DO TAKE OFF AT FULL POWER.
F or the first few take offs climb at a higher airspeed. Reduce power at cross wind leg and shal low
climb (lower nose).
5. VARY your RPM when flying.
6. Avoid high nose altitude continual climbs . The higher the climb out speed the better for engine
cooling. No low s peed high nose altitude climb outs .
7. CI RCU IT WORK is possibly a good sequence for initial run in work . Abbreviate circuits
initially, step climb, climb shallow.
No glide approaches . Gradually reduce power. Avoid sudden heating up and sudden cooling down.
8. R E T ORQUE heads as suggested on warning sheet.
24 ft lb and .010” valve clearance al l done cold. Subsequent torquing of around 22 to 24 seems to
help in settling down head bolts and heads.
9. Don’t BABY YOUR ENGINE but monitor carefully CHT and oil temp initially especially during
the first few hours of operation.
Remember engines need to be flown. T hey are designed for this purpose. Do not use full power
before CHT reaches 100oC.
Ring bed in is accomplished better at 75% power and above. Avoid heat build up. Monitor CHT and
oil temps . Vary R PM. Initial temps will be elevated due to friction of a new engine.
Failure to operate at realisic power settings could be detrimental .
10. Do not use any type of automotive oil. These oils have not been blended for the purpose of air
cooled aero engine operation and will be detrimental to its operation.
11. U se AVGAS 100 LL or the highest Octane Mogas above 95 containing lead. Engines not
shimmed on the cylinder base should only be run on AVGAS .
12. When you change oil from the “run in” type to the “normal” oil at or around 25 hrs replace oil fil
er. You may want to cut the filter open for inspection. It is usual in Jabiru engines to find
a small amount of aluminium but definitely no metal. If bearing metal is present contact the
Jabiru Service Department.
13. With ignition and master OFF and throttle closed turn the prop by hand and observe engine for
odd nois s or heavy movements .
Check for regular compressions, if irregular, firstly check tappet adjustment. Operation with
incorrectly adjusted tappets will result in damage to valves, valve seats , guides and overhead gear .