8If the see-through blade guard becomes dirty, or sawdustadheres to it in such a way that the blade is no longer easilyvisible, unplug the saw and clean the guard carefully with adamp cloth. Do not use solvents or any petroleum-basedcleaners on the plastic guard.If the blade guard is especially dirty and vision through theguard is impaired, use the supplied socket wrench to loosenthe hex bolt holding the center cover. Loosen the hex bolt byturning it counterclockwise and raise the blade guard andcenter cover. With the blade guard so positioned, cleaningcan be more completely and efficiently accomplished. Whencleaning is complete, reverse procedure above and securebolt. Do not remove spring holding blade guard. If guardbecomes discolored through age or UV light exposure, con-tact a Makita service center for a new guard. DO NOTDEFEAT OR REMOVE GUARD.Kerf boardThis tool is provided with the kerf board in the turn base tominimize tearing on the exit side of a cut. If the kerf groovehas not yet been cut in the kerf board by the factory, youshould cut the groove before actually using the tool to cut aworkpiece. Switch on the tool and lower the blade gently tocut a groove in the kerf board.Maintaining maximum cutting capacityThis tool is factory adjusted to provide the maximum cuttingcapacity for a 255 mm (10ā) saw blade.When installing a new blade, always check the lower limitposition of the blade and if necessary, adjust it as follows:First, unplug the tool. Lower the handle completely. Use thesocket wrench to turn the adjusting bolt until the periphery ofthe blade extends slightly below the top surface of the turnbase at the point where the front face of the guide fencemeets the top surface of the turn base.1. Blade guard10017821. Kerf board2. Turn base1 20017761. Socket wrench2. Adjusting bolt1 2001777