Tachometer Selection - BOMBARDIER 1996 Ski-doo MX Z440 Handbook

TACHOMETER SELECTION

A different tachometer type is needed for different ignition types. The number of poles on the
stator and flywheel determine the number of pulses generated per revolution. The tach must be
matched to the ignition type. Two types of tachometers are used on Ski-doo models. Tachometers
with no labeling are usually 4 pulse tachometers. 6 pulse tachometers are usually labeled as such
on the dial face.
4 PULSE TACHOMETERS
- Bosch breaker points
- Bosch CDI polar fire, '72-'78
- Bosch CDI racing, '79-'82
- ND dual and single generating
coil, 4 pole, '81-'95
- ND 4 pole racing
(ND = Nippondenso)
Section 04 ENGINE PREPARATION
6 PULSE TACHOMETERS
-
Bosch 6 pole CDI, 77-80 Blizzard
- Ducati CDI 170 and 240 watt, '92 and newer
- ND 12 pole CDI 220 watt, '93 and newer
04-95