Ultimaker Original maintenance

More often

• level bed
• clean glass print bed with warm water
• clean and lubricate axles

Less often

• check for tension on belts going to the motors. Retighten if necessary.
• Check for play on the axles: Don't follow the regular maintenance here. On UM2 and above the axles should not move lengthwise, but there are no pulleys blocking the axles from moving. There is some play in the wooden end caps. Maybe put some spacers in if necessary.
• check that print head is parallel with the other axles. Use the wooden helper pieces.