Polaris Virage TX 2000 Service Manual page 14

GENERAL INFORMATION
Glossary Of Terms
ABDC: After bottom dead center.
ATDC: After top dead center.
ACV: Alternating current voltage.
Alternator: Electrical generator producing voltage alternating current.
BBDC: Before bottom dead center.
BDC: Bottom dead center.
BTDC: Before top dead center.
Bow: The front of a watercraft
C: Celsius
CC: Cubic centimeters.
CDI: Capacitor discharge ignition. Ignition system which stores voltage generated by the stator plate exciter coil
in a capacitor or condenser (in CDI box). At the proper moment a voltage generated by the stator plate pulser coil
closes an electronic switch (thyristor) in the CDI box and allows the voltage in the capacitor to discharge into the
primary windings of the ignition coil.
Cl: Cubic inches.
Condenser/Capacitor: A storage reservoir for electricity, used in both E.T. and CDI systems.
Crankshaft Run-Out: Run-out or "bend" of crankshaft measured with a dial indicator while crankshaft is
supported between centers on V blocks or resting in lower half of crankcase. Measure at various points especially
at the PTO end.
DCV: Direct current voltage.
Detonation: The spontaneous ignition of the unburned fuel/air mixture after normal ignition spark occurs. Piston
looks "hammered" through, rough appearance around hole. Possible causes: 1) Compression ratio too high for
the fuel octane; 2) low octane fuel; 3) over-advanced ignition timing.
Dial Bore Gauge: A cylinder measuring instrument which uses a dial indicator. Good for showing taper and
out-of-round in the cylinder bore.
End Seals: Rubber seals at each end of the crankshaft.
F: Fahrenheit
ft.: Foot/feet.
Foot Pound: Ft. Ib. A force of one pound at the end of a lever one foot in length, applied in a rotational direction.
g: Gram. Unit of weight in the metric system. There are 28 grams in one ounce.
gal.: Gallon.
Head Volume (Uninstalled): Cylinder head capacity in cc, head removed from engine with spark plug installed.
High Tension Lead: The heavy insulated wire which carries the high secondary voltage from the coil to the spark
plug.
Holed Piston: Piston in which a hole has formed on the dome. Possible causes: 1) detonation; 2) pre-ignition.
HP: Horsepower.
ID: Inside diameter.
Ignition Coil: A type of transformer which increases voltage in the primary windings (approx. 200V) to a higher
voltage in the secondary windings (approx. 14KV - 32KV) through induction. Secondary voltage must be high
enough to ionize the air gap at the spark plug.
Ignition Generating Coil: Exciter coil, primary charge coil. Stator plate coil which generates primary ignition
voltage.
in.: Inch/inches.
kg/cm : Kilograms per square centimeter.
Kg-m: Kilogram meters.
Km: Kilometer.
Kilogram meter: A force of one kilogram at the end of a lever one meter in length, applied in a rotational direction.
300 1.10 Polaris Sales Inc.