Knowledge
12 step by step guides for the jobs where the right tool decides between success and damage. Every guide names the tool that belongs with it and says what happens if you leave it out.
Guide
The flywheel sits on the taper of the crankshaft. It is not held there by the nut but by the friction between two cleanly mated...
Tools: Flywheel Puller M22x1.5 / M26x1.5, Flywheel Puller M27x1.25
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The ignition timing determines when the spark jumps in relation to the piston position. A few degrees too early and the engine pinks and gets hot....
Tools: Degree Wheel 120 mm, Degree Wheel 120 mm (German made)
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The feeler gauge is the simplest measuring tool in the workshop and still the one most mistakes are made with. A thin steel blade with...
Tools: Feeler Gauge 0.40 mm, Feeler Gauge, 6 Blades
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A weak spark, flickering lights, a flywheel that rubs on the pole shoes: all three faults often have the same cause, a wrong air gap...
Tools: Centring and Setting Ring 79.8 mm, Feeler Gauge 0.40 mm
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The front sprocket is the smallest and most heavily loaded gear in the drivetrain. It turns most often per kilometre, and it sits where oil, dirt...
Tools: Sprocket Holding Tool 415 Kreidler, Sprocket Holding Tool 420 Zündapp KS 50/80, Kreidler RS, Hercules Ultra
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The clutch is the component that beginners most often come unstuck on with a moped. Not because it is complicated, but because it...
Tools: Clutch Puller Puch Maxi, Clutch Holding Tool Kreidler
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Changing a tyre on a moped or light motorcycle is hand work. You do not need a tyre machine, but you do need two decent tyre levers, a...
Tools: Tyre Lever 270 mm, Valve Core Tool
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A snapped clutch cable or a frayed throttle cable puts the moped out of action. Ready-made cables to suit are no longer available for many classics, or they...
Tools: Bowden Cable Nipple Assortment, 83 Piece
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The spark plug is the cheapest diagnostic tool on a two-stroke. Its appearance tells you whether the mixture and the heat range are right, whether the engine is drawing oil or...
Tools: Spark Plug Spanner 21 mm, Brass Brush
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A piston change is one of the jobs every two-stroke mechanic does sooner or later: after a seizure, with worn rings or during a...
Tools: Gudgeon Pin Extractor, Piston Support Block Kreidler
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A rattle from the crankcase, an engine that draws false air once it is warm, or a crankshaft with noticeable play: then the...
Tools: Crankshaft Bearing Puller BO15 / BO17
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Every torque table quotes figures in newton metres. What the figure means, why an oiled thread changes it and what happens when you...
Tools: Wheel Hub Spanner 17 mm, Spark Plug Spanner 21 mm
Read →Choose the job, get the tool list. With the order of work, the reasoning and a shortlist.
Start →Threads, sizes across flats, tightening torques, bearing designations, measuring points for the feeler gauge.
Look it up →Convert torque, decode a bearing number, identify a thread, tick off your basic equipment.
Calculate →