I had this little sucker fail me TWICE. Once luckily near workshop who identified the problem (the bike wont run or will run with an awful sound that you really dont want to hear). So I kept an extra in my purse just in case and lo and behold, it happened again, but I was prpared. Suggestion: get one and keep it with that puny toolkit under the seat.
The Woodruff key serves two vital functions in an engine:
The Woodruff key serves two vital functions in an engine:
- Mechanical Locking & Torque Transfer: It sits halfway inside a matching semi-circular slot (keyway) on a rotating shaft (like the crankshaft). When a component like the flywheel or gear is slid over it, the protruding half locks into that component's keyway. This prevents the component from slipping or spinning freely on the shaft, ensuring precise rotational torque transfer.
- Precise Alignment (Timing): It acts as an alignment guide. Because it forces the flywheel to mount in exactly one position, it ensures that the engine's ignition and valve timing marks on the rotor line up perfectly with the crankshaft's position (Top Dead Center).
