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.
Box / Crate with Handholds 3 x 4 x 1 2/3BluePart 30150Element 4218596 or 4141380×1
Sink 4 x 4 with Elliptical BasinBright Light OrangePart 6195Element 4215440×1
Bucket with Handle Holes and 5 Bottom Holes - Center Bottom Stud HolderPearl Light GrayPart 48245Element 4297956 or 4216592×1
Sink 4 x 4 with Elliptical BasinReddish BrownPart 6195Element 4216582×2
Minifig Accessories
4 pieces
Tap 1 x 2 with Dual HandlesPearl Light GrayPart 6936Element 4550925 or 4215494×2
Equipment Cup / Mug [Plain]RedPart 3899Element 389921×2
Bricks Sloped
2 pieces
Brick Sloped 45° 2 x 2Dark OrangePart 3039Element 6248859 or 6115261×2
Tiles Special
2 pieces
Tile Special 1 x 2 with HandleBluePart 2432Element 243223×2
Animals / Creatures
1 piece
Animal, Cat, Standing with Blue Eyes and Black Eyelashes PrintWhitePart 6175pr0001Element 4234718 or 4119505×1
Non-System Parts
1 piece
Backdrop, Belville Riding School [5941][No Color/Any Color]Part 4215976Element 4215976×1
Pneumatics
1 piece
Pneumatic T-Piece (T Bar) [New Style]Light Bluish GrayPart 4697bElement 42115081 spare in the box×1
Stickers
1 piece
Sticker Sheet for Set 5941-1[No Color/Any Color]Part 47528Element 4212136×1
String, Bands and Reels
1 piece
String with End Studs 11L OverallBlackPart 14226c11Element 6096955 or 6037558×1
Transportation - Land
1 piece
Tipper Bed 4 x 6, Open StudsSand BluePart 4080Element 4215495×1
Tubes and Hoses
1 piece
Hose, Pneumatic 4mm D. 19L / 15.2cmBluePart 5102c19Element 4216591×1
Minifigures
2 figures
Belville Horse Rider, Tan Pants, Black HelmetMinifigure, checked as a whole figure×1
Belville Horse Rider, White Pants, Black HelmetMinifigure, checked as a whole figure×1
Tick each piece as you find it, or mark it missing.
When a piece really is missing
Ask LEGO
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.
Mark 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.
Keep a record
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.