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Rule out the usual hiding places first. If the piece really is gone, check the set piece by piece and leave with the element ID LEGO asks for, or a link to buy the part.
Checking
72 pieces in 31 part and color combinations.
LEGO counts 70 pieces. This inventory comes from a separate parts catalog and lists 72; the two do not always count the same elements, so their totals differ. Spare parts are counted in neither figure.
Builders who report a missing piece often find it in one of these places. Tick each one off as you look.
These parts appear in this set in two colors that are easy to confuse. If you are one short in one color, check whether it went in where the other color belongs. Each color has its own element ID in the parts list at the back of the instructions.
Clikits Icon, Star 2 x 2 Small with Pin [Frosted]
Trans-Light Blue ×4
Aqua ×2
Trans-Light Blue is see-through: hold the piece up to a light.
LEGO's request form asks for the set number (7509) and each piece's element ID, both listed above.
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Clikits Icon, Star 2 x 2 Small with Pin [Frosted]
Also in Trans-Light Blue
×2
Clikits Icon Accent, Square 2 1/2 x 2 1/2
×2
Clikits Icon Accent, Star 3 1/4 x 3 1/4 with Pixelated Holographic Pattern
×1
Clikits Icon Accent, Star 4 3/4 x 4 3/4
×1
Clikits Icon Accent, Star 3 1/4 x 3 1/4 with Textured Surface
×3
Clikits Hair Clip with Fixed Trans-Clear Icon
×5
Clikits Container, Sorting Tray 5 Compartment, Bottom
×1
Clikits Container, Sorting Tray 5 Compartment, Lid
×1
Clikits Icon, Star 2 x 2 Large with Pin
×2
Clikits Bead, Ring, Thick Small with Hole
×2
Clikits Cord, Jelly String, 170mm, with Same Colored Caps
×1
Clikits Icon, Square 2 x 2 Small, with Hole [Frosted]
×2
Clikits Icon, Square 2 x 2 Small with Pin [Polished]
×3
Clikits Icon, Square 2 x 2 Small, with Hole [Frosted]
×2
Clikits Bead, Ring, Thick Small with Hole
×2
Clikits Icon Accent, Square 2 1/2 x 2 1/2
×2
Clikits Icon Accent, Star 4 3/4 x 4 3/4
×1
Clikits Icon, Square 2 x 2 Large with Pin, Silver Square Print
×4
Clikits Icon, Square 2 x 2 Small, with Hole [Frosted]
×4
Clikits Icon, Star 2 x 2 Large with Pin
×3
Clikits Icon, Star 2 x 2 Small with Pin [Frosted]
Also in Aqua
×4
Clikits Icon, Star 2 x 2 Small, with Hole
×6
Clikits Icon Accent, Star 3 1/4 x 3 1/4
×2
Clikits Icon Accent, Star 4 3/4 x 4 3/4
×1
Clikits Icon, Square 2 x 2 Small with Pin [Polished]
×2
Clikits Icon, Star 2 x 2 Large with Pin
×2
Clikits Icon, Star 2 x 2 Small with Pin [Frosted]
×2
Clikits Icon, Star 2 x 2 Small, with Hole
×1
Clikits Icon, Square 2 x 2 Small with Pin [Frosted]
×3
Clikits Icon, Star 2 x 2 Small, with Hole
×4
Tick each piece as you find it, or mark it missing.
LEGO takes requests for pieces missing from a new set through its customer service site. The form asks for the set number and each piece's element ID, the number printed beside the piece in the parts list at the back of the instructions. This checker lists both.
Request a replacement from LEGOMark a piece missing and your list links it to an eBay search for that part, which also covers pieces from older or second-hand sets.
Copy or download your missing list (the CSV opens in any spreadsheet), or print the whole checklist and tick pieces off on paper. Your marks stay in this browser, so you can check a big set over several sittings.
