Blade Replacement
Replace or rotate cutting blades.
Video Guide
How to Change Blades on a Luba (1:29)
Timestamps: 0:13 Disc swap trick · 0:20 Remove discs · 0:38 ⚠️ Hand tools only · 0:44 Remove old blade · 0:52 Install new blade · 1:00 Free rotation check · 1:09 Second hole trick
Frequency
| Action | Interval |
|---|---|
| Rotate blades 180° | Every 1.5 months |
| Replace blades | Every 3 months or 150 hours |
| Thicker grass | More frequent replacement |
Tools Required
- 2.5mm Allen key — For removing cutting discs
- Phillips head screwdriver — For blade screws
- Gloves — Highly recommended for safety
Step-by-Step Procedure
- Flip Mower — Place on soft surface (grass), upside down
- Remove Cutting Discs (optional, for disc swap) — 0:20
- Use 2.5mm Allen key
- Remove 3 center screws per disc
- Remove Old Blade — 0:44
- Use Phillips screwdriver
- Unscrew blade from disc
- Install New Blade — 0:52
- Place new blade + new screw
- Tighten by hand — NOT with power drill
- Verify Free Rotation — 1:00
- Blade must spin/flick freely around screw
- NOT clamped tight
- Reassemble — Replace disc if removed
Extend Blade Life
Disc Swap Trick — 0:13
Because discs rotate in opposite directions, swapping left and right discs uses the fresh edge of each blade.
Second Mounting Hole — 1:09
Each blade has two mounting holes. Moving the screw to the second hole exposes fresh blade edge — doubles blade life.
Warnings
Hand Tools Only
NEVER use a power drill — drills can slip and cause serious cuts — 0:38
Free Rotation Required
Blades must “flick” out of the way when hitting rocks. Over-tightening can crack the disc.
Replace All Together
Replace all blades and screws simultaneously for balanced cutting.
Official Manual
PDF Reference