Ryobi R163RTA English Manual - Page 18

OPERATION DEPTH OF CUT See Figures 16 - 17. Depth of cut is important because it affects the rate of feed that, in turn, affects the quality of the cut and the possibility of damage to the tool's motor and bit. A deep cut requires a slower feed than a shallow one. A cut that is too deep will slow the feed so that the bit is scraping rather than cutting. A too deep cut can cause smaller bits to be broken off. Bits that are 1/16 in. in diameter are easily broken off when subjected to too much side thrust. A large enough bit is not likely to break, but attempting a cut that is too deep may result in a rough cut, and it may be difficult to guide and control the bit as desired. It is recommended that you do not exceed 1/8 in. depth of cut in a single pass, regardless of the bit size or the softness or condition of the workpiece. To make deeper cuts, make as many successive passes as needed, lowering the bit 1/8 in. for each new pass. To save time, perform all the cutting necessary at one depth setting before lowering the bit for the next pass. This will insure a uniform depth when you complete the final pass. NOTE: Do not remove more than 1/8 in. in a single pass. Excessive depth of cut can result in loss of control and the possibility of serious personal injury. 2nd pass depth of cut width of cut 1st pass 2nd pass Fig. 16 1st pass Fig. 17 adjustments ADJUSTING Lock lever TENSION See Figure 18. Over time and with repeated use, the lock lever may become loose. When this occurs, tighten the stop nut slightly. The elastic stop nut should be loose enough so that there is some play in the lock lever when it is in the open position. NOTE: Do not over tighten the elastic stop nut. The lock lever should clamp tightly to secure the motor housing. CAUTION: Make sure the motor housing does not move up or down when clamped. If motor is not securely clamped in base, adjustments will not be accurate. LOCK LEVER stop nut TO TIGHTEN Fig. 18 18