2009 Suzuki 400 LTZ Quad Sport Service Manual, Page 284Get this manual
Charging System: 8) Insert the caps (2) into the filler holes, pressing in firmly so that the top of the caps do not protrude above the upper surface of the battery's top cover! !
CAUTION
CAUTION
Once the caps are installed to the battery, do not remove the caps Do not tap the caps with hammer when installing them
For charging the battery, make sure to use the charger specially designed for MF batteryOtherwise, the battery may be overcharged resulting in shortened service life Do not remove the cap during charging Position the battery with the cap facing upward during chargingBattery recharging!
CAUTION
Do not remove the caps on the battery top while rechargingNOTE When the vehicle is not used for long period, check the battery every month to prevent the battery discharge1) Remove the battery from the vehicleRefer to "Battery Removal and Installation (Page 1J-12)"2) Measure the battery voltage using the multi-circuit testerIf the voltage reading is less than the 12 (DC), recharge the battery with battery chargerRecharging time 0.9 for to 10 hours or for hour