What tools do I need to adjust 16 valves?

[motorcyclebaby]

A mechanic was wrong telling me I needed shims to adjust my valves. Now trying to locate the tools I need to adjust them myself.

So far these items are all clear:
- 0.08-0.13 mm feeler gauges (or 0.004-0.005 in)
- new head gasket
- rtv sealant

What about these?
- Cylinder head cover screw o-rings - What size are those?
- locknut ring spanner - does 40-46mm work?
- tappet adjust wrench. Haynes manual says "a small open-ended spanner will suffice." Why this vs a tappet wrench. Is it 4mm square or something?

Before opening up the cylinder head and checking the cam chain, what would the symptom of a loose cam chain be? My engine rumbles really low and has been guzzling gas, so wondering if something like that could be a symptom. Or is it just the valves that need adjusting?

Is there anything else I need?

Thanks for all your help!

[cowboyup3371]

Basscliff's page is a godsend...http://members.dslextreme.com/users/...adjustment.pdf

[motorcyclebaby]

Thanks, cowboy!
That answered almost all my questions

[chef1366]

Valve cover gasket not a head gasket.
Motion pro makes a tool to adjust the tappet and keep it in place while tightening the lock nut but I just use a little pair of pliers.

[SqDancerLynn1]

DO NOT FORGET TO PROPERLY TIGHTEN THE TAPPET ADJUSTERS. One hard rev and the adjuster can be in the oil pan or worst...

[Dodik]

^^ triple check that they are tight i just put the motor back in after fishing out the nut out of my crankcase.

[Larry D]

Here's a couple pics of my tappet adjusters. Just a square drive drywall screw that's been superglued into a dowel.

[7981GS]

Here's a couple pics of my tappet adjusters. Just a square drive drywall screw that's been superglued into a dowel.

Good idea!

Daniel

[Dodik]

i just bent the 4 inch screw to L shape so i can hold it didnt even bother with a dowel works the same