You can not set the timing. It is determined by the keyway between the flywheel and the crankshaft. It only goes in one place. You can adjust the coil, the valves and the carburetor.
The valve clearance is set by grinding the faces if there is too much clearance or grinding the tip of the stem if there is too little. If it is a OHV engine you can easily adjust the valves. Try going to the link below for a video that shows how to adjust the valves.
Lance Briggs is number 55 on the Chicago Bears.
0.004-0.006
You have to set the piston at Top Dead Center (TDC). I beleive the lash adjustment (valve clearance) is .004 to .006 in. That means thousandths. Once you have set piston at TDC (valve springs will not be compressed but extended on the compression stroke at TDC). You can now set the lash adjustment by loosening the set nut and bolt. You need a feeler gauge to do this. Set lash on both valves then recheck.
Valves 21 hp Briggs and Stratton Intek V Twin can be adjusted by increasing the torque on screw band with a right rotation. This can eliminate some leaking problems.
You can adjust the valves on your 17 horsepower Briggs and Stratton engine by turning the adjustment screws. The adjustments screws will determine how much fuel goes into the piston chamber.
how do you set the valves & what are the adjustments for the valves on a 2007 suzuki eiger 400
Yes They Do
This video will show you how: http://www.youtube.com/watch?v=NjzX-PUjKmo
0.004 clearance both valves both sides
The intake valves line up with the intake runners on the intake manifold. The exhaust valves line up with the exhaust runners on the exhaust manifold or headers. With #1 at tdc you can set 1,2,5,7 intake and 1,3,4,8 exhaust valves. Rotate the engine one revolution to #6 tdc and set the remaining valves.