Head Replacement: CMC 8500 Series

• Head appearance may vary from model shown, but the connections are the same.

• Do not pick up Head using only the blade depth knob or the Head cover.

• Pick up the Head by holding the “D-Shaped” upper and lower Head plates.

• Follow these instructions if there is a Straight Line Trimmer installed.

• Turn the shut off valve on the blue air line, and unplug the blue air line before removing the Straight Line Trimmer.

• Turn the bottom locking knob clockwise to loosen.

• Turn the top locking knob counter-clockwise to loosen.

• Slide the Straight Line Trimmer off of the Board and set aside in a safe place.

• Turn off the ECU.

• Click the Reset Motors Button on the Cut Preview and click OK on the release motors prompt if it displays.

• Push the blade cartridge release down to eject the blade cartridge.

• Turn off the air.

• Remove the hood from the Gantry by unscrewing the screws that hold it in place and set aside.

• Move the Gantry to the right side of the Board until the Footblock is off the Board.

• Disconnect the Head power plug (square connection) from the Head grabber arm.

• Disconnect the air to the Head by untwisting the two air fittings.

• Remove the two 5/32” screws and set aside.

• Roll the Head down the Gantry until it rolls off the Gantry, taking care not to drop it.

• Package it for return to Wizard.

• Keep the Gantry on the right edge of the CMC.

• Point the replacement Head so that the Footblock faces toward the CMC and the wheels are close to the bottom of the Gantry.

• Line up the wheels on the Head to the center channels of the Gantry arm and ease the Head onto the Gantry.

• Roll the Head up the Gantry until it lines up to the Head grabber arm on the right side of the Gantry.

• NOTE: If you are installing the Head and having difficulty getting the Head wheels onto the Gantry, see “Head Wheel Adjustment” further below.

• Holding the Head in position so that the Head lines up neatly to the Head grabber arm, replace the two 5/32” screws, making sure they go into the Head grabber arm and into the Head and tighten firmly.

• Connect the air to the Head by twisting the two air fittings together, matching colors.

• Connect the Head power plug (square connection) to the Head grabber arm.

• Reinstall the Gantry hood, replacing the screws removed earlier.

• Lift the Head up so that the Footblock does not strike the side of the Board and move the Gantry to the left.

• Turn on the air.

• You have installed the Head.

IMPORTANT: PROCEED TO Head WHEEL ADJUSTMENT INSTRUCTIONS.

WARNING: To avoid damage to the Head, do not loosen the Head wheel screws without first aligning the Head to the middle of the Board.

• Go to the Cut Preview screen.

• Manually move the Head and the Gantry to the middle of the Board, and click the power button and align the Head in this position.

• Locate the Head wheel adjustment Allen screws on the left side of the Head under the blade depth adjustment plate.

• They are next to the Head wheels and are marked with red dots. Do not touch the Allen screws on the wheels themselves.

• Loosen each Head wheel adjustment Allen screw only until the wheels are loose; about two full turns.

• The wheels are spring-loaded and will pop into place.

• NOTE: If having difficulty getting the Head wheels onto the Gantry during Head installation, loosen the Head wheel adjustment screws, roll the Head onto the Gantry, then continue with the following instructions.

• Grasp the Head with both hands and gently rock it back and forth to ensure that the wheels are lined up to the Gantry grooves.

• Holding the Head up so that it is level with the Board, retighten the Head wheel adjustment Allen screws consecutively; tighten the top screw half a turn, then the bottom screw half a turn, back to the top and continue until they are both tight.

• Check each of the Head wheels to make sure there is no movement.

• There are the two visible wheels on the left side of the Head under the blade depth adjustment plate, and two wheels on the backside of the Gantry, which can be felt by hand.

• They should sit firmly into the Gantry groove and be difficult to turn.

• If not, repeat the steps above for Head Wheel Adjustment.

• The Head wheels have now been adjusted.

• Click on the Reset Motors Button, click OK on the reset motors screen if it displays.

• Return the Head to the home position.

• Reinstall the blade cartridge if necessary.

• Call Customer Support if you have any questions at 425/551-4300 or 888/855-3335.

• The top of the Straight Line Trimmer has an air line coming out of the back of it.

• Locate the T-Nut on the glides on the backside of the trimmer.

• Make sure that the T-Nut lines up with the glide on both the upper and lower sections of the trimmer.

• Holding the Straight Line Trimmer steady (a second person helps here), carefully slide the trimmer onto the channels on the right side of the Board, making sure that the T-Nuts slide into the channel of both the upper and lower rails.

• Move the Straight Line Trimmer to the right until it stops.

• On the Straight Line Trimmer slowly tighten the bottom locking knob Counter-Clockwise until it is snug.

• Slowly tighten the top locking knob Clockwise until it is snug.

• Because the locking nuts were adjusted in the calibration process, it is not required to recalibrate when reinstalling the Straight Line Trimmer onto the Board.

• Plug the blue air line of the Straight Line Trimmer back into the blue air line of the air regulator.

• Turn the shut off valve on the blue air line to reconnect air to the Straight Line Trimmer.