If by chance an excessive amount of gas is generated due to overcharging, the safety valve operates to keep the battery safe.

3) When you do not use the motorcycle for months:

Give a refresh charge before you store the motorcycle and store it with the negative lead removed. Give a refresh charge once a month during storage.

4) Battery life:

If the battery will not start the engine even after several refresh charges, the battery has exceeded its useful life. Replace it. (Provided, however, the vehicle’s starting system has no problem.)

Keep the battery away from sparks and open flames during charging, since the battery gives off an explosive gas mixture of hydrogen and oxygen. When using a battery charger, connect the battery to the charger before turning on the charger. This procedure prevents sparks at the battery terminals which could ignite any battery gases. No fire should be drawn near the battery, or no terminals should have the tightening loos­ened.

The electrolyte contains sulfuric acid. Be careful not to have it touch your skin or eyes. If touched, wash it off with liberal amount of water. Get medical attention if severe.

Interchange

The sealed battery can fully display its performance only when combined with a proper vehicle elec­tric system. Therefore, replace the sealed battery only on a motorcycle which was originally equipped with the sealed battery.

Be careful, if a sealed battery is installed on a motorcycle which had an ordinary battery as original equipment, the sealed battery’s life will be shortened. Charging Condition Inspection

Battery charging condition can be checked by measuring battery terminal voltage.

• Remove the seat (see Seat Removal in the Frame chap­ter).

• Disconnect the battery terminals.

CAUTION Be sure to disconnect the negative terminal first.

• Measure the battery terminal voltage.

NOTE

О Measure with a digital voltmeter [A] which can be read one decimal place voltage.

• If the reading is below the specified, refreshing charge is required.

Battery Terminal Voltage Standard: 12.8 V or more

ELECTRICAL SYSTEM 16-23

Battery

Refreshing Charge

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WARNING

This battery is sealed type. Never remove seal cap [B] even at charging. Never add water. Charge with current and time as stated below.

• Disconnect the battery terminals (see Charging Condition Inspection).

• Remove the battery [A].

• Do refresh-charge by following method according to the battery terminal voltage.

Terminal Voltage: 11.5 ~ less than 12.8 V Standard Charge

1.2A×5~10h (see following chart)

Quick Charge

5.0 A × 1.0 h

Caution

If possible, do not quick charge. If the quick charge is done due to unavoidable circumstances, do stan­dard charge later on.

Terminal Voltage: less than 11.5 V Charging Method 1.2 A × 20 h

NOTE

○If the current does not flow when charging, raise the voltage initially (25 V as maximum), and let down the voltage to charge when the current starts to flow as a yardstick. If ammeter shows no change in current after 5 minutes, you need a new battery. The current, if it can flow into the battery, tends to become excessive. Adjust the voltage as often as possible to keep the current at standard value (1.2 A).

Battery [A] Battery Charger [B] Standard Value [C] Current starts to flow [D]

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completion of the charge by measuring the terminal volt­age according to the table below.

Criteria	Judgement
12.8 V or higher	Good
12.0 ∼ less than 12.8 V	Charge insufficient → Recharge.
less than 12.0 V	Unserviceable → Replace

16-24 ELECTRICAL SYSTEM

Charging System

Alternator Rotor/Starter Clutch Removal

• Hold the alternator rotor [A] steady with the flywheel holder [B], and remove the rotor bolt.

Special Tool - Flywheel Holder: 57001-1410

NOTE

○The rotor bolt has left-handed threads, therefore it must be turned clockwise in removing.

• Remove the engine sprocket cover (see Engine Sprocket Removal in the Final Drive chapter).

• Remove the engine guard (see Engine Guard Removal in the Frame chapter).

• Remove the shift pedal.

• Remove the circlip and washer from the shift shaft.

• Remove the left side cover.

• Slide the air cleaner housing.

• Disconnect the alternator lead connectors.

• Place an oil pan beneath the alternator cover.

• Remove the alternator cover bolts [A], and pull off the alternator cover [B] and gasket. There are two knock pins in the cover mating surface.

• Using the rotor puller [A], remove the alternator rotor and starter clutch assembly from the crankshaft. There is a spacer between the starter clutch sprocket and the alter­nator rotor. The woodruff key may come out with the al­ternator rotor and starter clutch assembly.

Special Tool - Rotor Pulier, M16/M18/M20/M22 × 1.5: 57001 -1216