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.
836 pieces in 255 part and color combinations, plus 5 minifigures.
The piece count includes the 21 parts inside the set's minifigures, which this inventory lists separately. Spare parts are counted in neither figure.
Before you call it missing
Builders who report a missing piece often find it in one of these places. Tick each one off as you look.
Look-alike colors in this set
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.
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)Red ×2Trans-Red ×4Trans-Red is see-through: hold the piece up to a light.
Hinge Cylinder 1 x 2 Locking with 1 Finger and Axle Hole On EndsBlack ×2Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Plate 1 x 6Black ×4Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Plate Round 1 x 1 with Solid StudBlack ×4Dark Bluish Gray ×8Black is darker than Dark Bluish Gray.
Tile Special 1 x 2 Grille with Bottom GrooveBlack ×4Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
LEGO's request form asks for the set number (7898) and each piece's element ID, both listed above.
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Clear every mark for this set?
Piece checklist
Black
211 pieces
Bar 6.6L with Stop Ring [Umbrella Stand]BlackPart 4095Element 409526×2
Battery Box / IR Receiver, Train Baseplate 9V RC Train 6 x 30 [Complete Assembly]BlackPart 55455c01Element 4548379 or 4296054×1
Bracket 1 x 2 - 2 x 2BlackPart 44728Element 6117973 or 6048855×1
Brick 1 x 2BlackPart 3004Element 300426×4
Brick 2 x 4BlackPart 3001Element 300126×2
Brick Sloped Inverted 45° 4 x 4 Double with 4 x 2 RecessedBlackPart 4854Element 4643321 or 4603490×1
Brick Special 1 x 1 with HeadlightBlackPart 4070Element 407026×10
Control Unit / Remote, Train 9V / RC, Dark Bluish Gray Bottom, Yellow ButtonsBlackPart 2016bElement 4516563 or 4289546×1
Equipment Shovel [Rounded Handle End]BlackPart 3837Element 4189009 or 383726×1
Forklift Mast and Carriage, Wide 1 x 2 Hinge Plate Locking and Dark Bluish Gray Wide Forks Reinforced [Complete Assembly]BlackPart 4518bc02Element 4295553×1
Hinge Brick 1 x 2 BaseBlackPart 3937Element 393726×4
Hinge Cylinder 1 x 2 Locking with 1 Finger and Axle Hole On EndsBlackPart 30552Element 4158848Also in Dark Bluish Gray×2
Hinge Plate 1 x 2 Locking with 1 Finger On End, with GrooveBlackPart 44301aElement 4183043×2
Hinge Plate 1 x 2 Locking with 2 Fingers On End, with Groove, 9 TeethBlackPart 44302aElement 4183060×2
Hinge Tile 1 x 3 Locking with 1 Finger on TopBlackPart 44300Element 4296142 or 4183028×2
Hose, Ribbed 7mm D. 2L / 1.6cmBlackPart 78c02Element 6253278 or 4296147×4
Magnet CylindricalBlackPart 73092Element 73092×10
Minifig Head [Plain] [Blocked Open Stud]BlackPart 3626b×2
Sticker Sheet for Set 7898-1[No Color/Any Color]Part 56603Element 4296206×1
Minifigures
5 figures
Worker, Orange Overalls over Blue Sweater, Red Hard Hat (3626b Head)Minifigure, checked as a whole figure×1
Train Machinist - White Torso, Blue Striped Overall, Blue HatMinifigure, checked as a whole figure×1
Train Worker - Orange Safety Vest, Orange Legs, Red HelmetMinifigure, checked as a whole figure×1
Train Worker - Orange Safety Vest, Orange Legs, Red HelmetMinifigure, checked as a whole figure×1
Train Worker - Orange Safety Vest, Orange Legs, Red Helmet, red HairMinifigure, 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.