Dewalt DCMWP234U2 Instructional Manual - Type 1 - Page 22

English • Set mower at highest cutting height when mowing in rough ground or in tall weeds. Removing too much grass at one time can cause the motor to be overloaded and to stop. • If a grass collection bag 22 is used during the fast growing season, the grass may tend to clog up at the discharge opening. Release bail handle to turn mower off, remove the safety key 6 and battery packs 26 . Remove the grass collection bag 22 and shake the grass down to the back end of the bag. Also clean out any grass or debris which may be packed around the discharge opening. Reinstall the grass collection bag 22 . • If mower should start to vibrate abnormally, release bail handle to turn mower off, remove the safety key and battery packs. Immediately check for cause. Vibration is a warning of trouble. Do not operate the mower until a service check has been made. • For best cutting results, keep blades sharpened and balanced. • Inspect and thoroughly clean mower after each use. A deck with caked grass will degrade performance. • Always release the bail handle to turn mower off, remove safety key and battery packs when leaving it unattended even for a short period of time. The following suggestions will help you to obtain optimum runtime from your cordless mower: • Slow down your cutting pace in areas where the grass is especially long or thick. • Avoid mowing when the grass is wet from rain or dew‑soaked. • Cut your lawn frequently, especially during high growth periods. NOTE: It is recommended that both of your battery packs be recharged after each use to prolong the battery life. Frequent charging will not harm your battery packs, and will ensure that the battery packs are fully charged and ready for their next use. NOTE: Storing the battery packs not fully charged will shorten their life. MAINTENANCE  DANGER: To reduce the risk of serious personal injury, turn unit off and remove the safety key and battery packs before making any adjustments or removing/installing attachments or accessories. An accidental start‑up can cause injury. Removing and Installing Blades (Fig. X-DD)  DANGER: RISK OF INJURY. WHEN REASSEMBLING THE BLADE SYSTEM, ENSURE EACH PART IS REINSTALLED CORRECTLY, AS DESCRIBED BELOW. IMPROPER ASSEMBLY OF THE BLADES OR OTHER PARTS OF THE BLADE SYSTEM MAY CAUSE SERIOUS INJURY.  DANGER: To reduce the risk of serious personal injury, turn unit off, remove safety key and battery packs before making any adjustments or removing/installing attachments or accessories. An accidental start‑up can cause injury. 20 Replacement blades are available from your nearest authorized service center. This mower requires replacement blades: DWO1DT234. Cut a piece of 2" x 4" wood 42 (about 2 feet long) (610 mm) to keep blades from turning when removing the blade assembly bolt 43 .  WARNING: Use gloves and proper eye protection. Turn the mower on its side. Be careful of sharp edges of blades. 1. Position the mower on its side, with two wheels flat on the ground. 2. Position the 2" x 4" wood 42 between the blade assembly 47 and outer lip of deck as shown in Fig. X to keep the blades from turning. 3. Unscrew and remove the blade assembly bolt 43 counterclockwise with a 9/16" (14 mm) wrench 44 (not included) as shown in Fig. X, Y. 4. Remove the keyed spacer 45 and blade assembly 47 from the blade shaft 49 . 5. Secure the blade assembly 47 in a vise 34 as shown in Fig. Z. 6. Unscrew the four blade nuts 51 counterclockwise with a 9/16" (14 mm) wrench 44 (not included) as shown in Fig. Z. First unscrew the two blade nuts 51 for blade 1 53 and remove blade 1. Then unscrew the two blade nuts 51 for blade 2 52 and pull blade 2 from the blade hub 48 . NOTE: The mower blades 53 and 52 have keyed mounting holes 55 permitting them to only be installed onto the blade hub 48 in the correct orientation. 7. Examine all pieces for damage and replace if necessary. 8. Install sharpened or new blades onto the blade hub 48 as shown in Fig. AA, BB. 9. Blade 2 52 is installed first, the bolt holes being aligned with the outer blade studs 56 and keyed mounting hole 55 on the blade hub 48 as shown in Fig. AA. NOTE: Ensure the keyed mounting hole 55 engages the key 57 on the blade hub 48 as shown in Fig. AA. The key 57 should be proud of blade 2 52 . 10. Blade 1 53 is installed second, the bolt holes being aligned with the inner blade studs 58 and keyed mounting hole 55 on the blade hub 48 as shown in Fig. BB. NOTE: Ensure the keyed mounting hole 55 engages the key 57 on the blade hub 48 and sits flush as shown in Fig. BB. NOTE: If blade 1 53 is not flush with the key 57 on the blade hub 48 , then the blades have been mounted in the incorrect order and must be reversed. 11. Thread the four blade nuts 51 onto the blade studs 56 and 58 as shown in Fig. AA, BB. Hand tighten the four blade nuts 51 . NOTE: When replacing sharpened or new blades on blade hub 48 make sure the bottom of the blade as marked Grass Side will be facing the ground when the mower is returned to its normal upright position.