1. Remove the valve cover.
2. Turn the crankshaft until the piston is at the top of its compression stroke.
3. Align the timing marks on the camshaft and crankshaft.
4. Install the valve cover and torque the bolts to 10 Nm (7 ft-lb).
5. Start the engine and check the timing.
Here is a more detailed guide on how to put a 2007 Yamaha Raptor in timing:
Step 1: Remove the valve cover.
* Disconnect the spark plug wires.
* Remove the valve cover bolts and remove the valve cover.
* Be careful not to drop any of the valve cover bolts into the engine.
Step 2: Turn the crankshaft until the piston is at the top of its compression stroke.
* Use a socket and wrench to turn the crankshaft clockwise.
* As you turn the crankshaft, watch the piston.
* When the piston is at the highest point in its travel, it is at the top of its compression stroke.
Step 3: Align the timing marks on the camshaft and crankshaft.
* There are two timing marks on the camshaft and one timing mark on the crankshaft.
* The camshaft timing marks are located on the front of the camshaft, and the crankshaft timing mark is located on the rear of the crankshaft.
* Align the camshaft timing marks with the crankshaft timing mark.
Step 4: Install the valve cover and torque the bolts to 10 Nm (7 ft-lb).
* Place the valve cover on the cylinder head and install the valve cover bolts.
* Tighten the valve cover bolts to 10 Nm (7 ft-lb).
Step 5: Start the engine and check the timing.
* Connect the spark plug wires.
* Start the engine.
* Use a timing light to check the timing.
* The timing should be set at 10 degrees +/- 1 degree Before Top Dead Center (BTDC).
If the timing is not correct, adjust it by turning the crankshaft.
Repeat steps 2-5 until the timing is correct.
