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Rotax 914 series Maintenance Manual

Rotax 914 series
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BRP-Rotax
Maintenance Manual
72-00-00
page 34
May 01/2007
Effectivity 912/914 Series
Edition 1 / Rev. 0
d02622
Measure the inner diameter (13) of the propeller shaft and the bearing neck (14)
of the oil inlet flange. The wear will probably appear as a flat area on the journal.
Check the gear-tooth system of the drive gear (15) and the vacuum pump gear
(8). Carry out a visual inspection of the ball bearing (12) and the cylindrical roller
bearing (16).
â–  CAUTION : The attachment screw (7) M8 of the vacuum pump gear for
hydraulic governor drive is 16 mm long (0.63 in.) and with a low
screw head. For vacuum pump drive, however, it is only 14 mm
long (0.55 in.) with standard screw head.
Clean parts carefully and remove sealant residues. Check the sealing surface
and all oil bores in the governor flange (3) for free passage. Carry out a visual
inspection of the needle sleeve (11) and the gear-tooth system and bearing
surface of the drive sleeve (9). Ensure that the connecting face for the oil
pressure line is clean.
The governor must be sent to the manufacturer if any repair work becomes
necessary.
00257
13
14
15
11
12
8
9
10
16
7
Fig. 72-32

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Rotax 914 series Specifications

General IconGeneral
Bore79.5 mm
Stroke61 mm
Compression Ratio9.0:1
Cooling SystemLiquid-cooled cylinder heads, air-cooled cylinders
Redline5800 rpm
Engine Type4-cylinder, 4-stroke
Fuel TypeAvgas 100LL
Oil SystemDry sump
Fuel Systemfuel injection
TBO (Time Between Overhauls)2000 hours
Displacement1.211 liters (1211 cc)
Power Output84.6 kW (115 hp) at 5, 800 rpm

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