Inspection And Replacement Of Spark Plugs - Rotax 912 Series Maintenance Manual

13.2) Inspection and replacement of spark plugs

General note See
Because of the differing thermal load, particular spark plugs have been
specified for each engine type.
In numerous tests the best possible heat range has been determined to
make sure that the spark plug will burn off deposits but will not overheat.
Renewal intervals
NOTES:
Special tool Ensure that the following spark plugs corresponding to engine type are
employed and that the correct spark plug socket is used:
912 A/F/UL
912 S/ULS
13.2.1) Remove the spark plugs
Remove
Remove the spark plugs and store them according to cylinder and posi-
tion. Always replace both spark plugs of a cylinder and do not inter-
change spark plugs between cylinders.
Effectivity: 912 Series
Edition 3 / Rev. 0
BRP-Powertrain
MAINTENANCE MANUAL
Fig. 31.
Use of incorrect spark plugs can result in ignition prob-
NOTICE WARNUNG
lems and pre-ignition and consequent engine damage.
See chap. 05-50-00 section: 3).
Operation with leaded fuels (e.g. AVGAS 100LL) can re-
sult in increased wear of the spark plugs. Reduce renewal
intervals accordingly.
Engine Part no.
897255
297940
Designation
DCPR 7E 16 mm (0.63 in)
DCPR 8E 16 mm (0.63 in)
12-20-00
September 01/2012
Size of socket
page 63