Battery — removal and installation Battery removal Remove: Tool Box (see Tool box removal in the Frame chapter) Disconnect the negative (-) cable [A]. Slide out the positive (+) terminal cap [B] and then disconnect the positive (+) cable. Caution! Be sure to disconnect the negative...
Battery activation Electrolyte filling Make sure that the model name [A] of the electrolyte container matches the model name [B] of the battery. These names must be the same. Battery Model Name for VN900B/D: YTX12-BS Caution! Be sure to use the electrolyte container...
Battery precautions Precautions 1) No need of topping-up. No topping-up is necessary in this battery until it ends its life under normal use. Forcibly prying off the seal cap to add water is very dangerous. Never do that. 2) Refreshing charge. If an engine will not...
Battery charging condition inspection Charging condition inspection Battery charging condition can be checked by measuring battery terminal voltage with a digital voltmeter [A]. Remove: Seat (see Seat removal in the Frame chapter) Battery Cable Cap (see Battery removal ) Disconnect the...
Battery refreshing charge Refreshing charge Remove the battery [A] (see Battery removal ). Do refresh charge by following method according to the battery terminal voltage. Warning! This battery is sealed type. Never remove sealing cap [B] even at charging. Never add water....
Alternator cover — removal and installation Alternator cover removal Drain the engine oil (see Engine oil change in the Periodic Maintenance chapter). Remove: Bolt [A] Bolts [B] Footboard [C] and Shift Pedal as a set Remove: Alternator Outer Cover (see Alternator outer cover removal ) Engine...
Stator coil — removal and installation Stator coil removal Remove: Alternator Cover (see Alternator cover removal ) Bolts [A] Alternator Lead Holder Plate [B] Bolts [C] Crankshaft Sensor [D] Crankshaft Sensor and Alternator Lead Grommets [E] Stator Coil Bolts [F] Remove the stator coil...
Alternator rotor — removal and installation Alternator rotor removal Remove: Alternator Cover (see Alternator cover removal ). Wipe oil off the outer circumference of the rotor. Hold the alternator rotor steady with the rotor holder [A], and remove the rotor bolt [B]. Special tools: Rotor...
Alternator inspection There are three types of alternator failures: short, open (lead burned out), or loss in rotor magnetism. A short or open in one of the stator coil lead will result in either a low output, or no output at all. A loss in rotor magnetism, which may be...
Regulator/rectifier removal and inspection Remove: Bolts [A] Regulator/Rectifier Cover [B] Remove: Bolts [A] Regulator/Rectifier [B] Connector [C] (disconnect) Regulator/rectifier inspection Rectifier circuit check Remove the regulator/rectifier (see Regulator/Rectifier Removal). Check...
Charging voltage inspection Check the battery condition (see Charging condition inspection ). Warm up the engine to obtain actual alternator operating conditions. Remove: Seat (see Seat removal in the Frame chapter) Tool Box (see Tool box removal in the Frame chapter) Check...
Starter motor — removal and installation Starter motor removal Remove: Regulator/Rectifier (see Regulator/rectifier removal ) Bolts [A] Front Cross Pipe [B] Drain the engine oil (see Engine oil change in the Periodic Maintenance chapter). Remove the starter motor cable nut [A] and the...
Starter motor — disassembly and assembly Starter motor disassembly Remove: Starter Motor (see Starter motor removal ) Take off the starter motor through bolts [A] and remove both end covers [B] and pull the armature out of the yoke [C]. Remove: Terminal Locknut and Washers O-ring Remove...
Starter relay inspection Remove: Right Side Cover (see Right side cover removal in the Frame chapter) Disconnect the connector [A]. Disconnect the starter motor cable [B] and battery positive (+) cable [C] from the starter relay [D]. Caution! The battery positive (+) cable...