To avoid malfunction, damage or injury always use a suitable grinding wheel that is in
good condition. Do not use a grinding wheel that is chipped, cracked, or worn. You can
check if the wheel has cracks not visible to the human eye by hanging it up by the
central hole and tapping it with a non-metal object (ie: screwdriver handle). If it is in
good condition it will produce a metallic sound. A dull sound indicates a crack or break.
Make sure before carrying out any work on the MAXI Mk2 that the plug is disconnected
from the mains power.
Changing the Grinding Wheel
1. Switch off the machine and unplug from the main power source.
2. Raise the motor housing and lock it in the up position by tightening the nut. Remove
the grinding wheel protective cover by unscrewing the 4 retaining screws.
3. Hold the grinding wheel firmly with one hand and loosen the lock cap with the socket
wrench.
4. Remove the old grinding wheel and replace with a new one. Tighten the fixing nut
but do not over tighten - over tightening may cause the wheel to crack or break. Only
use grinding wheels with an outer diameter of 108mm and inner diameter of 23mm
(7/8"). The grinding speed of replacement grinding wheel must meet or exceed the
RPM rating of the machine.
5. Remount the grinding wheel protective cover onto the machine. Release the nut and
lower the motor housing. Never operate the MAXI Mk2 without the grinding wheel
cover in place. Keep away from the wheel when it is turning, and make sure no one
is standing close, in the line of the wheel rotation trajectory. If the grinding wheel
vibrates on start up, turn off the machine immediately and check that the grinding
wheel is mounted securely!
6 Never try to stop the grinding wheel with your hands, even if you are wearing safety
gloves. The grinding wheel will cut through gloves and your hand, causing serious
injury.
Replace the grinding wheel when it grinds down to a diameter of 75mm (3”).
Grinding Wheel Replacement
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