Stiga MPV 320W Workshop Manual page 54

WORKSHOP MANUAL
MPV 320W / 520W
• If you use a 12 volt automatic battery charg-
er, select a good quality charger with mini-
mum 5-10 Ampere output at 15 VDC and
charge for 3-12 hours depending on the bat-
tery charge status (see table).
• If you are using a constant current charger, charge at 1-2 Amperes for the time indicated in the
table.
IMPORTANT - Charging at higher rates will damage the battery and cause excessive gassing
and acid spewing.
d) Charging with an alternator
Under normal conditions the engine alternator will keep the battery charged. If the machine is not
used for a long period of time and the battery was fully discharged, a battery charger must be used
to charge it again.
e) Replacing the battery
The battery used on this machine is characterised by a CCA value, critical for good ignition. This
value indicates the number of amperes that a battery can support for 30 seconds at a temperature
of -17.8°C before the voltage drops to unusable levels.
The replacement must take place with a battery of similar or higher CCA
f) Emergency jump-start with cables
Jump starting, battery charging, or replacement is required when the starter motor will not crank
the engine.
IMPORTANT - The machine used for jump starting should have a 12 volt battery with at least 500
cold cranking amperes, and a negatively grounded system.
DANGER! - FROZEN BATTERIES CAN EXPLODE and result in death or serious in-
jury. DO NOT charge a frozen battery. Let the battery thaw out before putting on a charger.
UNIT MOVEMENT can result in death or serious injury. NEVER jump-start the machine
with cables directly on the starter motor or solenoid valves The machine could move for-
ward or backward and injure the person jump starting it.
To jump-start with the cables:
1. Ensure battery is not frozen. If the fluid is frozen, remove the battery from unit and allow to thaw
before charging.
2. Connect the positive (+) jumper cable to the positive (+) terminal of the discharged battery.
3. Connect the other end of the same jumper cable to the positive (+) terminal of the booster bat-
tery.
4. Connect one end of the second jumper cable to the negative (-) terminal of the booster battery.
Chapter
7 - ELECTRICAL SYSTEM
Voltage (OCV)
12.60
12.40
12.20
12.00
11.80
EDITION
2017
Charge % Charging time
100% --
75% 3 hours
50% 7 hours
25% 10 hours
0% 12 hours
[ 3.1].
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