Makita HR4041C Owners Manual - Page 7

Rotate the change lever to the position. Rest the core bit on the concrete and turn the tool on. Once the core bit has cut a shallow groove into the concrete, rotate the change lever to the position and resume drilling. Run the tool for several minutes to warm it up. Switch off and unplug the tool. Loosen three hex bolts which secure the crank cap cover and remove the crank cap. Rest the tool on the table with the bit end pointing upwards. This will allow the old grease to collect inside the crank housing. 1. Hammer grease 1 007800 NOTE: • No problem is caused even if the core bit unscrews slightly during brief use since the core bit rotates in the tightening direction. To remove the core bit, follow the same removal procedures covered in "When using the center bit". MAINTENANCE CAUTION: • Always be sure that the tool is switched off and unplugged before attempting to perform inspection or maintenance. Lubrication This tool requires no hourly or daily lubrication because it has a grease-packed lubrication system. It should be relubricated after every 6 months of operation. Send the complete tool to Makita Authorized or Factory Service Center for this lubrication service. 2 1. Hex bolt 3 2. Hex wrench 3. Crank cap cover 1 007791 1. Crank cap 1 007888 007792 Wipe out the old grease inside and replace with a fresh grease (60 g; 2 oz). Use only Makita genuine hammer grease (optional accessory). Filling with more than the specified amount of grease (approx. 60 g; 2 oz) can cause faulty hammering action or tool failure. Fill only with the specified amount of grease. Reinstall the crank cap and crank cap cover and tighten the three screws with the hex wrench. To maintain product SAFETY and RELIABILITY, repairs, carbon brush inspection and replacement, any other maintenance or adjustment should be performed by Makita Authorized or Factory Service Centers, always using Makita replacement parts. ACCESSORIES CAUTION: • These accessories or attachments are recommended for use with your Makita tool specified in this manual. The use of any other accessories or attachments might present a risk of injury to persons. Only use accessory or attachment for its stated purpose. If you need any assistance for more details regarding these accessories, ask your local Makita Service Center. • Bull point • Cold chisel • Scaling chisel • Grooving chisel • Core bit • Center bit • Rod • Core bit adapter • Hammer grease • Depth gauge • Safety goggles • Plastic carrying case 7