Rotax 914 series Maintenance Manual

Effectivity 912/914 Series
Edition 1 / Rev. 0
page 1
May 01/2007
d02623
73-00-00
BRP-Rotax
Maintenance Manual
SECTION 73
FUEL SYSTEM
1) Table of contents
SECTION 73
FUEL SYSTEM
1) Table of contents .................................................................................... 73-00-00 / 1
2) Systems description ...............................................................................73-00-00 / 3
2.1) Fuel system (on 912 Series) .........................................................73-00-00 / 3
2.2) Fuel system (on 914 Series) .........................................................73-00-00 / 5
2.3) Fuel filter ....................................................................................... 73-00-00 / 7
2.4) Fuel pump (on 912 Series)............................................................ 73-00-00 / 7
2.5) Fuel pump (on 914 Series)............................................................ 73-00-00 / 7
2.6) Fuel pressure regulator (only on 914 Series) ................................73-00-00 / 8
2.7) Pressure connecting lines (only on 914 Series) ............................73-00-00 / 10
2.8) BING constant depression carburetor type 64-3 ..........................73-00-00 / 12
2.9) Handling of fuel .............................................................................73-00-00 / 15
2.10) Connections for instrumentation ...................................................73-00-00 / 16
2.10.1) Airbox air temperature display (only on 914 Series) .............73-00-00 / 16
2.10.2) Boost pressure display..........................................................73-00-00 / 16
2.11) Carb heat system and winter operation ........................................73-00-00 / 16
3) Maintenance ...........................................................................................73-00-00 / 17
3.1) Disassembling carburetors, carburetor sockets, fuel lines
and drip tray (on the 912 Series) ..................................................73-00-00 / 17
3.2) Disassembling carburetors, carburetor sockets, fuel lines
and drip tray (on the 914 Series) ..................................................73-00-00 / 19
3.3) BING-constant depression carburetor inspection ........................73-00-00 / 21
3.3.1) General note .........................................................................73-00-00 / 21
3.3.2) Float needle valve leakage test ...........................................73-00-00 / 22
3.3.3) Individual components of the carburetor (on the 912 Series)73-00-00 / 23
3.3.4) Individual components of the carburetor (on the 914 Series)73-00-00 / 24
3.3.5) Diaphragm ............................................................................73-00-00 / 25
3.3.6) Jet needle .............................................................................73-00-00 / 25
3.3.7) Float chamber, floats ............................................................ 73-00-00 / 27
3.3.8) Float brackets .......................................................................73-00-00 / 28
3.3.9) Carburetor jets ......................................................................73-00-00 / 29
3.3.10) Float needle valve inspection...............................................73-00-00 / 30

Rotax 914 series Specifications

General

Bore	79.5 mm
Stroke	61 mm
Compression Ratio	9.0:1
Cooling System	Liquid-cooled cylinder heads, air-cooled cylinders
Redline	5800 rpm
Engine Type	4-cylinder, 4-stroke
Fuel Type	Avgas 100LL
Oil System	Dry sump
Fuel System	fuel injection
TBO (Time Between Overhauls)	2000 hours
Displacement	1.211 liters (1211 cc)
Power Output	84.6 kW (115 hp) at 5, 800 rpm