9-S10
L3130 · L3430 · L3830 · L4630 · L5030, WSM
ELECTRICAL SYSTEM
4. CHECKING, DISASSEMBLING AND SERVICING
CAUTION
• To avoid accidental short circuit, be sure to attach the positive cable to the positive terminal before the
negative cable is attached to the negative terminal.
• Never remove the battery cap while the engine is running.
• Keep electrolyte away from eyes, hands and clothes. If you are spattered with it, wash it away completely
with water immediately.
• Keep open sparks and flames away from the battery at all times. Hydrogen gas mixed with oxygen
becomes very explosive.
• If the machine is to be operated for a short time without battery (using a slave battery for starting), use
additional current (lights) while engine is running and insulate terminal of battery. If this advice is
disregarded, damage to alternator and regulator may result.
[1] BATTERY
(1) Checking
Battery Voltage
1. Stop the engine and turn the main switch off.
2. Connect the COM (−) lead of the voltmeter to the battery’s
negative terminal post and the (+) lead to the positive terminal
post, and measure the battery voltage.
3. If the battery voltage is less than the factory specification, check
the battery specific gravity and recharge the battery.
W10125620
Battery Terminal Connection
1. Turn the main switch on, and turn on the head light.
2. Measure the voltage across the battery’s positive terminal post
and the cable terminal, and the voltage across the battery’s
negative terminal post and the chassis.
3. If the measurement exceeds the factory specification, clean the
battery terminal posts and cable clamps, and tighten them firmly.
W10126630
Battery voltage Reference value More than 12 V
Potential difference Reference value Less than 0.1 V
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