Free workshop printables
Identification worksheets
Work out what you actually own when the badge is meaningless and the paperwork has gone.
The badge on the bodywork is the weakest evidence on the machine. It names the company that imported it, not the factory that built the engine, and when that importer folds the name leads nowhere. Everything in this section works from what is stamped, cast or printed on the machine itself, because those survive the company that sold it.
What scooter do I actually have?A one-sheet record of every number that identifies your machine — badge, VIN, engine number, engine family and factory. Fill it in once, photograph it, and never hunt for it again.TSP-ID-01 · 6 pp
Where is the VIN on a Chinese scooter?A search checklist for the VIN, frame number, engine number and emission label — including the places people look last and should look first.TSP-ID-02 · 3 pp
GY6 engine identification chart and worksheetThe measurements and observations that tell you which engine you have when the label is gone — recorded in the order a parts supplier will ask for them.TSP-ID-03 · 3 pp
Short case or long case? How to tell, and why it decides everythingOne measurement and one count decide which drive belt, which wheel and which brake your engine takes. Take them before you shop, not after.TSP-ID-04 · 3 pp
How to read a Chinese scooter VIN, character by characterWhat each of the seventeen characters means under US federal rules, and the two traps that make a motorcycle VIN harder to read than a car one.TSP-ID-05 · 3 pp
What the engine code on your crankcase meansEvery character in the code stamped on your crankcase, what it means, and why 139QMB and 1P39QMB are the same engine.TSP-ID-06 · 3 pp
What size engine do I actually have?The speedometer, the sticker and the title can all be wrong. The crankcase is not. How to settle displacement from physical evidence.TSP-ID-07 · 3 pp
Where is the emission label? Sorted by body styleThe most useful label on the machine, organised by what shape your machine is rather than by what it says on the bodywork.TSP-ID-08 · 3 pp
How to take a rubbing of a frame or engine numberWhen a stamping will not photograph and will not read, take a rubbing. It works when your eyes and your phone both fail.TSP-ID-09 · 3 pp
Badge twins: the other names your scooter was sold underThe same machine was sold under other names. Those names are extra search terms, and this is where you write them down.TSP-ID-10 · 2 pp
Is my scooter a two-stroke or a four-stroke?The question everything else depends on, settled from six things you can see without tools. Plus air-cooled or liquid-cooled while you are there.TSP-ID-11 · 2 pp
Other sections
- Measure partsTrue-size gauges and record sheets for the measurements a seller will ask you for.
- Maintenance and recordsLogs and checklists that turn a machine with no history into one with a history.
- TroubleshootingStructured diagnostic sheets that end at an observation you can make, not a part to buy.
- Electrical and wiringMeter readings, connector maps and wire traces, recorded on paper where they belong.
- Complete packsThe sheets that belong together, assembled into a single PDF for a job that takes a whole day.
- Buying and orderingWhat to check before you hand money over, and before you click buy on a part.