Makita 35 mm HR3520 38 mm HR3850 Maintenance, Replacement of carbon brushes, Lubrication

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MAINTENANCE

CAUTION:

Always be sure that the tool is switched off and unplugged before carrying out any work on the tool.

Replacement of carbon brushes (Fig. 11 & 12)

Whenever carbon brushes must be replaced, they cut out the tool automatically. When this occurs, replace both carbon brushes at the same time. Use only identical carbon brushes.

Lubrication (Fig. 13 & 14)

This tool requires no hourly or daily lubrication because it has a grease-packed lubrication system. Lubricate the tool every time the carbon brushes are replaced.

Run the tool for several minutes to warm it up. Switch off and unplug the tool. Remove the crank cap using a Makita lock nut wrench 35 (optional accessory). Rest the tool on the table with the bit end pointing upwards. This will allow the old grease to collect inside the crank housing. Wipe out the old grease inside and replace with a fresh grease (60 g). Use only Makita genuine grease (optional accessory). Filling with more than the specified amount of grease (approx. 60 g) can cause faulty hammering action or tool failure. Fill only with the specified amount of grease. Reinstall the crank cap and tighten with the lock nut wrench. Do not tighten the crank cap exces- sively. It is made of resin and is subject to breakage.

To maintain product safety and reliability, repairs, maintenance or adjustment should be carried out by a Makita Authorized Service Center.

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Contents Mm HR3520 Mm HR3850 Page Page Symboli SymbolsSymboles SymboleOperating Instructions Additional Safety RulesSide grip auxiliary handle Core bit optional accessory Selecting action mode Not available for HR3520Adjusting depth of drilling Fig Switch action FigReplacement of carbon brushes MaintenanceLubrication Stroomvoorziening Aanvullende VeiligheidsvoorschriftenBewaar Deze Voorschriften Verklaring van algemene gegevensBedieningsvoorschriften Centerboor wordt niet gebruikt OnderhoudVervangen van koolborstels en Smeren en