LEGO Diesel Locomotive
Set #723 · 1970 · 96 pieces · Quick build

Set Details
- Set Number
- 723
- Name
- Diesel Locomotive
- Theme
- Train
- Year
- 1970
- Pieces
- 96
- Complexity
- Quick
- Build Time
- 20-45 minutes
- Ages
- 6+
- Type
- Play-focused
About LEGO Diesel Locomotive
LEGO Diesel Locomotive (set #723) is a quick, accessible build with 96 pieces from the Train theme, released in 1970. The Train line features motorized and static train sets with tracks and stations. This is a quick-level build suitable for ages 6+, with an estimated build time of 20-45 minutes. This set dates from the pre-minifigure era, before LEGO introduced its iconic yellow-faced figures in 1978.
Finding Instructions
Instructions for older sets like #723 (1970) may not always be available on LEGO.com. Try searching the set number directly, or upload a photo of the bricks to LegoFinder — the AI can identify vintage sets from their parts.
Diesel Locomotive FAQ
More Train Sets
Also Released in 1970
Need Instructions for Diesel Locomotive?
Upload a photo of your LEGO Diesel Locomotive set and get the building instructions PDF in seconds.
Upload a Photo Now


