Cam Timing Setup - Setting TDC

When setting up the cam timing on the Hayabusa, first you need to set the engine to Top Dead Centre (TDC). The timing mark on the starter clutch and cover is a good starting point but does not take in to account manufacturing tolerances.

I completed the following to set the engine to true TDC:

1. Set the engine to TDC by aligning the timing marks on the starter clutch and casings. I used the mark I made previously on the magneto and engine casing.
2. Installed the degree wheel on the end of the crank using the 14mm bolt that fixes the starter clutch. Had to remove the clutch and starter covers to fit the degree wheel.
3. Attached a piece of wire to the engine casing and pointed the end to TDC on the degree wheel.
4. Rotated the engine with a socket on the magneto bolt, rotated until the wheel read about 90 off TDC.
5. Fitted the piston stop in cylinder 1 which is nearest the magneto end.
6. Rotated the engine in the running direction until it hit the stop, then recorded the reading on the degree wheel.
7. Rotated the engine in the opposite direction and then when it hit the stop, recorded the reading on the degree wheel.
8. The numbers I recorded were 38 and 40. These were then added together and then divided by 2 making 39.
9. With the piston stop in place, I rotated the engine to the end of travel and then adjusted the pointer wire slightly to read 39.
10. Rotated the engine in both directions and checked that the readings were 39.
11. Finally rotated the engine to read TDC on the degree wheel.