Aircraft Service Manual
Jabiru Aircraft
Pty Ltd
JTM001-1
J120, J160, J170, J200/J400, J230/J430, J250/J450 Variants
REVISION
1
Dated: Nov 2011
Issued By: SW
Page: 159 of 233
13.2 ENGINE
13.2.1 DESCRIPTION
The engines used in Jabiru Aircraft are horizontally-opposed, 4-stroke air-cooled designs, driving a
fixed-pitch wooden propeller. 80hp, 4-
cylinder “2200” versions are used in the J120, J160 and J170
model families while the 120hp, 6-
cylinder “3300” engine is used in the J200, J230 and J250 model
families. In some kit-built variants the 3300 engine may also be used in the smaller aircraft.
The front Starboard cylinder is numbered 1, the front Port is numbered 2 with this numbering
convention continuing for the remaining cylinders.
Refer to Engine Instruction & Maintenance Manual for detailed engine data.
For repair & overhaul of the engine, refer to the Overhaul Manual issued by Jabiru Aircraft Pty Ltd.
13.2.2 ENGINE DATA
Refer Engine Instruction & Maintenance Manual
13.2.3 ENGINE REMOVAL & INSTALLATION
Refer Engine Instruction & Maintenance Manual
13.2.4 ENGINE TROUBLE SHOOTING
Refer Engine Instruction & Maintenance Manual
13.2.5 ENGINE CLEANING
Refer to Section 5
13.2.6 ENGINE ACCESSORIES
Jabiru engines may be fitted with an accessory vacuum pump, mounted to a pad at the rear of the
engine.
All Jabiru engines are fitted with a permanent magnet alternator at the rear of the engine. This is
considered a part of the engine and is discussed in the engine Instruction & Maintenance Manuals.
Removal, inspection and installation of accessories are discussed in the appropriate engine
Instruction & Maintenance Manual.
13.2.7 ENGINE INSPECTIONS
For specific items to be inspected and for periodic inspection details, refer to Engine Instruction &
Maintenance Manual.
Generally, inspect for:
-
Loose bolts, nuts, cracks, leaks & cooling fin damage
-
Inspect baffles, baffle seals & brackets for cracks, deterioration or damage.
-
Inspect hoses for internal swelling, chafing, cuts, breaks, stiffness or loose connections.
Excessive heat on hoses will cause them to become brittle & easily broken. Hoses are most likely
to crack or break near the ends & at support points. Check fire sleeves on fuel lines within the
engine compartment.
-
All flexible hoses in the engine compartment should be replaced at engine overhaul or every 2
years whichever comes first. Hoses which show visible deterioration (cracking, excessive
hardening) should be replaced immediately, irrespective of age.
-
For major engine repairs, refer to Jabiru Aircraft Pty Ltd or an Approved Jabiru Service Centre.
13.3 FLEXIBLE HOSES
13.3.1 DESCRIPTION
Flexible “rubber” hoses are used within the engine bay to carry fuel and oil. Vent lines for the engine
and carburettor are also flexible lines.
