Index Snowmobiles / ATV Snowmobile Polaris 440 PRO X Fan, 440 PRO X, 600 PRO X, 700 PRO X, 800 PRO X - service manual 2003 year
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GENERAL INFORMATION 1.18 ACV: Alternating current voltage. Air Gap Spark Test: A good check for ignition voltage and general ignition system condition. Spark should arc 3/8” (1 Alternator: Electrical generator producing alternating current voltage. Bore: Diameter of cylinder. BTDC: Before Top Dead Center. Bump Steer: When skis toe in and toe out through suspension travel. CDI: Capacitor Discharge Ignition. Ignition system which stores voltage generated by the stator plate exciter coil in a Center Cylinder: On three cylinder engines, the cylinder between Mag and PTO ends. Center Distance: Distance between center of crankshaft and center of driven clutch shaft. Chain Pitch: Distance between chain link pins. Polaris measures chain length in number of pitches. Clutch Buttons: Plastic bushings which transmit rotation of the clutch to the movable sheave in the drive and driven Clutch Offset: Drive and driven clutches are offset so that drive belt will stay nearly straight as it moves along the clutch Clutch Weights: Three levers in the drive clutch which relative to their weight, profile and engine RPM cause the drive Coil: A winding of wire around an iron core which has the ability to generate an electrical current when a magnetic field Combustion Chamber: Space between cylinder head and piston dome at TDC. Compression: Reduction in volume or squeezing of a gas. 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 DCV: Direct current voltage. Detonation: The spontaneous ignition of the unburned fuel/air mixture after normal spark ignition. Piston looks Dial Bore Gauge: A cylinder measuring instrument which uses a dial indicator. Good for showing taper and Displacement: The volume of the cylinder displaced by Effective Compression Ratio: Compression ratio measured from after the piston closes the exhaust port. Electrical Open: Open circuit. An electrical circuit which isn’t complete. (i.e. poor connections or broken wire at hi-lo Electrical Short: Short circuit. An electrical circuit which is completed before the current reaches the intended End Seals: Rubber seals at each end of the crankshaft. Engagement RPM: Engine RPM at which the drive clutch engages to make contact with the drive belt. E.T. Ignition: Energy Transfer ignition. Generates primary ignition voltage through electro magnetic induction. 4 Bore x Stroke x 3.1416 2 = Displacement in |