Camshaft timing and TDC

[Incubus]

This is pretty simple, but I just wanted to bounce it off someone.

I had to use the timing plate from the parts bike when I got Incubus running (XS1100F). I am not totally convinced the timing arrow is in the right place. I am not worried about whether the camshafts are timed right, as the bike runs well, but I am concerned about setting the spark timing and adjusting the cam chain tension.

To make sure the mark is in the right place I put No. 1 cyinder at TDC and the "T" mark then should line up with the timing arrow, right? If it is not, I move the timing arrow until it lines up?

Thanks, y'all.

Patrick

[bikerphil]

Yep, find TDC thru the #1 spark plug hole, use something like a soda straw or similar. If you have a dial indicator, that's even better but not necessary. When it's at TDC, if the pointer isn't on the "T" mark, loosen the Phillips screw and move it so it lines up. When using the timing light, the "F" mark should be lined up with the pointer when the bike is idling at 1100 RPM. Cam chain adjustment should be done at the "C" mark after turning the engine by hand clockwise a few times.

[randy]

That's pretty much it. You can use a drinking straw in the spark plug hole to feel TDC. There will be a null spot of a few degrees as the crank comes over, try to find the middle of the null spot. That's TDC.

[Incubus]

Thanks, guys. I have a dial indicator - a remnant of my two-stroke dirt bike days when you had to find TDC to time the engine, set the points, change the oil, inflate the tires, turn left - pretty much everything. I still have one, my DT1B. You have to find TDC and pull the cylinder head on that bike to shift your butt on the seat.

That was the way I remembered it, but I didn't have to tear down this engine and its been a couple years since I had Succubus apart.

Patrick

[79XS11F]

If the factory paint blob is still in place at the base of the pointer then it has not been moved. The paint blob will be on the pointer screw and pointer base. If it's been moved then follow the instructions you have already been given.
Rob