Where is the emission label? Sorted by body style

The problem it solves

The emission control information label carries the engine family number, which ties a machine to a specific federal certificate rather than to a badge somebody chose. It is the strongest identifier most of these machines have — and it is almost always hidden behind bodywork, which is why most owners have never seen theirs.

Every guide to finding this label is written for one brand, which is unhelpful when your brand no longer exists or was only ever a sticker. What actually determines where the label lives is the shape of the machine: a step-through scooter has a storage bucket and a legshield, an ATV has fenders and a frame you can see, a go-kart has almost no bodywork at all.

So this sheet is organised by body style. Find the section that matches the shape of what you own and work down it, ticking places off as you eliminate them. If you reach the end having found nothing, that is a result too — record it, because it means you work from the crankcase stamping and the VIN instead.

One thing worth knowing before you start: a missing label does not mean the machine was never certified. These labels are printed on adhesive stock, live under plastics that get hot, and frequently do not survive a decade. The certificate still exists in the federal record even when the sticker has gone.

The mistakes this sheet exists to prevent

• Looking only under the seat and concluding it is not there. On many machines it is inside the storage bucket, which has to come out.
• Mistaking the tyre pressure or VIN plate for the emission label. The emission label names an engine family; the others do not.
• Peeling at a label to read it, which destroys the only copy.
• Not photographing it once found, so the panels have to come off again next time.
• Assuming a machine with no label was never certified, when the sticker simply has not survived.

How to use it

1. 01Identify which body style section applies, then work down it in order.
2. 02Take a torch. Almost every one of these locations is in shadow.
3. 03Photograph the label flat on and in focus the moment you find it.
4. 04If you find nothing after the whole list, record that and work from the crankcase stamping instead.