Looking to adjust the valves on my tracker 16V, & the manual calls for a special tool because it said that you can't get a wrench on some of the nuts.  I can't find the tool, so thinking of making one out of a deep socket & weld a handle on it then stick a screw driver down the center for the screw, but I don't know what size the nuts are to get the socket.        This is my first time trying to adjust the valves as they are making some noise, I have a new VC gasket, but don't want to remove the cover till I have everything to do the job... any help on this?
 Also what adjustments do you use for the int & exh.

It's a 10mm nut, but Ive done mine several times without any " special " tool. Just a 10mm box wrench and screwdriver. There is a procedure for getting the valves to be adjusted to TDC, then it depends if the engine is cold or hot. I always do mine cold, like after sitting overnight. .005 to .007 cold I believe, without checking my FSM. Try searching for " valve adjustment" here and you should be able to find all the specs and procedures.

Thanks for the info, never would have thought a 10MM was thinking more like a 12 or 13MM...will give it a try with just a box wrench, like you I always have adjusted valves when cold,

To tight is worse than loose. It's better to have a little
noise in these than quiet "too tight"

Agree with Sundance, loose is better than tight, but with that being said I try and get mine as close to the minimum as possible. Splitting the difference is always good too, like .006.

thanks for the info, will let you know how it goes