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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.
Builders who report a missing piece often find it in one of these places. Tick each one off as you look.
LEGO's request form asks for the set number (9158) and each piece's element ID, both listed above.
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Duplo Figure, Early with Joined Legs Yellow, Blue Top with Red Suspenders, Red Hair, Freckles, White in Eyes Print
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Duplo Figure, Early with Joined Legs, Blue Legs and Body, White Bonnet (Baby)
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Duplo Figure, Early, Aviator Hat Yellow, Yellow Legs, Plain Top
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Duplo Figure, Early, Sailor Hat White, Blue Legs, Anchor Print
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Duplo Figure, Early, with Short Parted Hair Light Gray, Black Legs, Light Lime Bow Tie, Glasses Print
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Duplo Figure, Early with Joined Legs Yellow, Red Top with Collar And 3 Buttons, Yellow Hair, White in Eyes Print
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Duplo Figure, Early, Hair Bob Black, Blue Legs and Arms, Yellow Scarf with Red Dots, White Eyes Print
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Duplo Figure, Early, Hair Bob Brown, Blue Legs, Blue Overalls, Turned Down Nose Print
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Duplo Figure, Early, Hair Bob Brown, Yellow Legs, Yellow Arms, Yellow Scarf with Red Dots, White Eyes Print
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Duplo Figure, Early, Hard Hat White, Blue Legs, and Blue Overalls, Turned Down Nose Print
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Duplo Figure, Early, with Flat Cap Red, Black Legs, 2 Yellow Buttons, White Eyes Print
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Duplo Figure, Early with Joined Legs, with Yellow Legs, Black Hair, and Yellow Bonnet (Baby)
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Duplo Figure, Early, Hair Bob Brown, Red Legs, Red Buttons and Gray Wrench, Turned Down Nose Print
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Duplo Figure, Early, Hair Bob Light Gray, Red Legs, Red Necklace, Gray Hair, Glasses Print
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Duplo Figure, Early, Fire Helmet Red, Black Legs, White Buttons Print
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Duplo Figure, Early, with Short Parted Hair Black, Blue Legs, Yellow Tie, Blue Arms, White Eyes Print
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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.
