Ultimaker Original maintenance

More often

• level bed
• clean glass print bed with warm water
• clean and lubricate axles. Only add green grease to the lead screw
• Clean nozzle
• Check feeder and clean if necessary

Less often

• Check tension short belts
• 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.
• Change heat brake plastic thingy
• replace Bowden tube