Makita 4390D Instruction Manual

Also see for 4390D: Parts manual Instruction manual Parts Breakdown Parts manual Instruction manual

Contents

8• If you try to charge a battery cartridge from a justoperated tool, sometimes the charging light will notcome on. If this occurs, let the cartridge cool off for awhile. Then re-insert it and try to charge it once more.• When you charge a new battery cartridge or a batterycartridge which has not been used for a long period oftime, it may not accept a full charge. This is a normalcondition and does not indicate a problem. You canrecharge the battery cartridge fully after discharging itcompletely and recharging a couple of times.• When you charge a new battery cartridge or a batterycartridge which has not been used for a long period,sometimes the charging light will go out soon. If thisoccurs, remove the battery cartridge and re-insert it. Ifthe charging light goes out within one minute even afterrepeating this procedure a couple of times, the batterycartridge is dead. Replace it with a new one.• If you wish to charge two battery cartridges, allow 15minutes between charging on the charger.Tips for maintaining maximum battery life1. Charge the battery cartridge before completely dis-charged.Always stop tool operation and charge the battery car-tridge when you notice less tool power.2. Never recharge a fully charged battery cartridge.Overcharging shortens the battery service life.3. Charge the battery cartridge with room temperature at10°C - 40°C (50°F - 104°F).Let a hot battery cartridge cool down before charging it.Switch actionCAUTION:• Before inserting the battery cartridge into the tool,always check to see that the switch trigger actuatesproperly and returns to the “OFF” position whenreleased.To prevent the switch trigger from being accidentally pulled, alock-off lever is provided.To start the tool, slide the lock-off lever in the direction of thearrow and pull the switch trigger. Release the switch triggerto stop.1. Lock-off lever2. Switch trigger12002490