EasyManuals Logo

Rotax 912 Series Service Manual

Rotax 912 Series
456 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #254 background imageLoading...
Page #254 background image
74-00-00
page 6
May 01/2007
Effectivity 912/914 Series
Edition 1 / Rev. 0
d02624
BRP-Rotax
Maintenance Manual
2.1.1) Ignition
See Fig. 74-4.
As already stated, the engine is equipped with dual ignition of a
breakerless capacitor discharge design (DCDI). That means that the
ignition unit comprises two independently working ignition circuits
(separate trigger coil, electronic module, charging coils etc.).
â—† NOTE: The ignition unit cannot be disassembled and needs no
adjustment.
Each ignition circuit consists of two ignition branches. Ignition occurs on
cylinder 1 and 2 simultaneously every 360° as well as on cylinder 3 and
4 but 180° offset.
â—† NOTE: Due to engine design, ignition occurs also at "the TDC
of the exhaust stroke", but this has no effect on engine
operation.
The engine is furnished with an automatic ignition timing controlled by
the edge of trigger cams on the fly wheel hub and the electronic
modules.
◆ NOTE: For easy engine start, the ignition timing at start is 4°
B.T.D.C. for ignition circuit A and B.
As soon as the engine runs, the ignition point will change over
automatically to operation ignition.
On the 912 Series: Ignition circuit A and B 26°
On the 914 Series: ignition circuit A 26°
ignition circuit B 22°
The transition from start ignition timing to the timing for operation takes
place between 650 and 1000 rpm.

Table of Contents

Other manuals for Rotax 912 Series

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the Rotax 912 Series and is the answer not in the manual?

Rotax 912 Series Specifications

General IconGeneral
Redline5800 rpm
TBO2000 hours
Displacement1211 cc
Bore79.5 mm
Stroke61 mm
Power Output80 hp (59.6 kW)
Compression Ratio9.0:1
Fuel TypeAvgas 100LL
Ignition SystemDual electronic ignition
Fuel SystemFuel Injected
Oil SystemDry sump
Engine Type4-cylinder, horizontally opposed, 4-stroke

Related product manuals