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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.

Level Four - Kit 10, Time Machine

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20209 Level Four - Kit 10, Time Machine

205 pieces in 87 part and color combinations, plus 1 minifigure.

The piece count includes the 4 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.

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Piece checklist

Plates 32 pieces

  • Plate 1 x 2 Black Part 3023 Element 302326 Also in Dark Bluish Gray ×4
  • Plate 1 x 4 Black Part 3710 Element 371026 ×7
  • Plate 1 x 6 Black Part 3666 Element 366626 ×1
  • Plate 2 x 4 Black Part 3020 Element 302026 ×2
  • Plate 2 x 8 Black Part 3034 Element 303426 ×1
  • Plate 1 x 2 Dark Bluish Gray Part 3023 Element 4211063 Also in Black ×2
  • Plate 2 x 4 Light Bluish Gray Part 3020 Element 4211395 ×4
  • Plate 2 x 6 Light Bluish Gray Part 3795 Element 4211452 or 3795194 ×1
  • Plate 1 x 10 Tan Part 4477 Element 4143409 or 447705 ×1
  • Plate 1 x 2 Tan Part 3023 Element 4113917 or 302305 ×8
  • Plate 2 x 16 White Part 4282 Element 6609534 or 4119227 ×1

Plates Round Curved and Dishes 27 pieces

  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Black Part 2654 Element 4617551 or 4278359 ×7
  • Dish 6 x 6 Inverted, Radar / Webbed [Anti-studs at 90°] Light Bluish Gray Part 4285b Element 4211487 ×2
  • Plate Round 1 x 1 with Solid Stud Tan Part 6141 Element 4161734 or 614105 ×6
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Tan Part 4032a Element 4140562 or 403205 ×5
  • Plate Round 1 x 1 with Solid Stud Trans-Green Part 6141 Element 6514057 or 6240221 ×1
  • Plate Round 1 x 1 with Solid Stud Trans-Red Part 6141 Element 6514051 or 6208450 ×1
  • Plate Round 1 x 1 with Solid Stud White Part 6141 Element 6601919 or 614101 ×5

Plates Special 23 pieces

  • Plate Special 1 x 2 [Side Handle Closed Ends] Black Part 48336 Element 4225201 ×3
  • Plate Special 1 x 2 with Bar Up [Horizontal Arm 5mm] Black Part 88072 Element 6261348 or 4569733 ×1
  • Plate Special 1 x 2 with Clip Horizontal on End Black Part 63868 Element 6336989 or 4535739 ×6
  • Plate Special 3 x 2 with Rounded End, Hole Black Part 3176 Element 317676 or 317626 ×1
  • Technic Plate 2 x 6 [5 Holes] Black Part 32001 Element 3200126 ×1
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Dark Blue Part 3794a ×1
  • Technic Plate 2 x 4 [3 Holes] Dark Bluish Gray Part 3709 Element 4227398 ×1
  • Bracket 1 x 2 - 2 x 2 Inverted Light Bluish Gray Part 99207 Element 4654580 ×1
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Light Bluish Gray Part 87580 Element 6126082 or 4565393 ×2
  • Plate Special 4 x 4 with 2 x 2 Opening Light Bluish Gray Part 64799 Element 4612621 ×2
  • Plate Special 1 x 1 with Tooth Tan Part 49668 Element 4224793 ×2
  • Plate Special 1 x 4 with 2 Studs, 3 Bottom Tubes White Part 92593 Element 4597131 ×2

Bricks Round and Cones 18 pieces

  • Brick Round 1 x 1 Open Stud Black Part 3062b Element 306226 ×4
  • Brick Round 2 x 2 with Axle Hole Black Part 3941 Element 614376 or 614326 ×2
  • Cone 2 x 2 x 2, Open Stud Black Part 3942c Element 6092664 or 6022160 ×1
  • Brick Round 2 x 2 Dome Top, Blocked Open Stud, Bottom Axle Holder Light Bluish Gray Part 30367b ×1
  • Brick Round 2 x 2 [Grill] Light Bluish Gray Part 92947 Element 4650645 or 4610816 ×2
  • Cone 1 x 1 [Top Groove] Light Bluish Gray Part 59900 Element 4529241 ×5
  • Brick Round 2 x 2 Dome Top, Blocked Open Stud, Bottom Axle Holder White Part 30367b ×3

Tiles Special 14 pieces

  • Tile Special 1 x 1 with Clip with Rounded Tips Black Part 12825 Element 6030718 ×1
  • Tile Special 1 x 2 Grille with Bottom Groove Dark Red Part 2412b Element 4541506 or 4528969 ×13

Technic Bricks 11 pieces

  • Technic Brick 1 x 1 with Pin Hole Black Part 6541 Element 654126 ×2
  • Technic Brick 1 x 2 with Axle Hole Type 2 [X Opening] Black Part 32064b ×5
  • Technic Brick 1 x 2 [1 Pin Hole] Light Bluish Gray Part 3700 Element 4211440 ×2
  • Technic Brick 1 x 4 [3 Pin Holes] Light Bluish Gray Part 3701 Element 4211441 ×2

Bricks Special 10 pieces

  • Brick Special 1 x 1 with Headlight Black Part 4070 Element 407026 ×8
  • Brick Special 1 x 4 with 4 Studs on One Side Black Part 30414 Element 4162443 ×1
  • Brick Special 1 x 1 Studs on 4 Sides Light Bluish Gray Part 4733 Element 4211511 ×1

Bricks Sloped 7 pieces

  • Brick Sloped 33° 3 x 1 Black Part 4286 Element 428626 ×2
  • Brick Sloped 45° 2 x 2 Dark Blue Part 3039 Element 4153653 ×1
  • Brick Sloped 33° 3 x 2 Light Bluish Gray Part 3298 Element 4211421 ×2
  • Brick Sloped 30° 1 x 2 x 2/3 White Part 85984 Element 6550189 or 4547489 ×2

Tiles 7 pieces

  • Tile 1 x 1 with Groove Dark Blue Part 3070b Element 6554193 or 4631385 ×2
  • Tile 1 x 1 with White and Red Gauge Print Light Bluish Gray Part 3070bpr0007 Element 4255629 ×2
  • Tile 1 x 2 with Red 82, Yellow and White Gauges Print Light Bluish Gray Part 3069bpr0101 Element 4227776 ×3

Bricks Curved 6 pieces

  • Brick Curved 2 x 2, Two Top Studs Black Part 30165 Element 4200023 or 4113231 ×2
  • Brick Curved 4 x 1 No Studs [Stud Holder with Symmetric Ridges] Dark Blue Part 11153 Element 6580395 or 6554195 ×4

Technic Axles 6 pieces

  • Technic Axle 8 with Stop Dark Bluish Gray Part 55013 Element 4499858 ×1
  • Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×1
  • Technic Axle 5 Light Bluish Gray Part 32073 Element 32073194 or 4211639 ×1
  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×3

Bars, Ladders and Fences 5 pieces

  • Bar 6L with Stop Ring Black Part 63965 Element 6170421 or 6081988 ×1
  • Lever Small Base with Black Lever Black Part 298c02 Element 73587 ×2
  • Bar 4L (Lightsaber Blade / Wand) Light Bluish Gray Part 30374 Element 6116608 or 4211628 ×1
  • Light Cover 1 x 1 Round with Internal Bar / Bionicle Barraki Eye Trans-Dark Blue Part 58176 Element 6328198 or 6171763 ×1

Minifig Accessories 4 pieces

  • Equipment Binoculars Dark Bluish Gray Part 30162 Element 4587887 or 4211051 ×2
  • Equipment Sextant Dark Bluish Gray Part 30154 Element 6269999 or 4217675 ×1
  • Equipment Binoculars Light Bluish Gray Part 30162 Element 4550170 or 4212313 ×1

Plates Wedged 4 pieces

  • Wedge Plate 8 x 3, 22° Left Light Bluish Gray Part 50305 Element 4258275 or 4228302 ×2
  • Wedge Plate 8 x 3, 22° Right Light Bluish Gray Part 50304 Element 4258273 or 4228300 ×2

Technic Connectors 4 pieces

  • Technic Axle Connector with Axle Hole Black Part 32039 Element 4107081 or 3203926 ×3
  • Technic Axle 1.5 with Perpendicular Axle Connector (Technic Pole Reverser Handle) Light Bluish Gray Part 6553 Element 4211536 ×1

Technic Pins 4 pieces

  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×2
  • Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 ×2

Transportation - Land 4 pieces

  • Steering Wheel Small, 2 x 2 Black Part 30663 Element 4153044 ×3
  • Seat / Chair 2 x 2 with Center Sprue Mark Reddish Brown Part 4079b ×1

Tiles Round and Curved 3 pieces

  • Tile Round 1 x 1 Light Bluish Gray Part 98138 Element 6284071 or 4650260 ×2
  • Tile Round 2 x 2 with Fine Mesh Grill Print Light Bluish Gray Part 4150pr0022 Element 4221881 ×1

Bricks 2 pieces

  • Brick 2 x 2 Corner Black Part 2357 Element 235776 or 235726 ×2

Panels 2 pieces

  • Panel 1 x 2 x 2 [Side Supports / Hollow Studs] Black Part 87552 Element 4593678 ×2

String, Bands and Reels 2 pieces

  • Chain 6L [5 Links] Pearl Gold Part 92338 Element 6323688 or 4600501 ×2

Technic Beams 2 pieces

  • Technic Beam 1 x 4 Thin White Part 32449 Element 6360072 or 4144138 ×2

Technic Gears 2 pieces

  • Technic Gear 8 Tooth Dark Bluish Gray Part 3647 Element 4514559 ×1
  • Technic Gear Rack 1 x 4 Light Bluish Gray Part 3743 Element 6457283 or 4211450 ×1

Transportation - Sea and Air 2 pieces

  • Propeller 7 Blade 6 Diameter Flat Silver Part 87751 Element 6493590 or 6176468 ×2

Large Buildable Figures 1 piece

  • Large Figure Weapon Ammo, Flexible Ammunition Belt Black Part 98567 Element 4652060 ×1

Minifig Neckwear 1 piece

  • Minifig Neckwear Bracket [One Stud] Light Bluish Gray Part 42446 Element 4211760 ×1

Minifig Shields, Weapons, & Tools 1 piece

  • Weapon Lightsaber Hilt with Bottom Ring Light Bluish Gray Part 64567 Element 4581155 or 4539481 ×1

Technic Bushes 1 piece

  • Technic Bush Light Bluish Gray Part 3713 Element 6275844 or 6271817 ×1

Minifigures 1 figure

  • MBA Level Four Kit 10 Minifigure, 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.

Request a replacement from LEGO

Buy the piece

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.

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