[1 Thump]

Changed motor oil at 550 miles. First change was at 75 miles by dealer. Replaced with one quart of valvoline 20w50 synth through the dipstick hole. How much more do I need to add. The dipstick is dry. Should I perform some decompressed kicks to spread the oil around after more oil is added. 

[REpozer]

More like 1.75-2 quarts, I can't remember because I fill mine to the bottom of the dip stick, then run at idle for a minute or two, shut off then check oil again . add if necessary to about half up the stick.

From then on check after a ride.

I also kick it over 4 times or more to prime the oil , before fire up.

[zentrax]

yep, what REpozer said. IT may be a bit early to start using synthetic though. These motors like a long break in time, 1000 miles or kilometres at least on mineral oil to free things up. then by all means use synthetic best thing. I use a brass one way check valve on my crankcase breather which eliminates all problems associated with it, plus it allows me to fill my oil to top of dipstick mark quite safely

[1 Thump]

Could you share where you get that valve from ?

[Geirskogul]

Any good sized straight PCV valve - get the biggest one with the quickest action you can fit on the hose.  Be sure to use a metal one, just in case.  You can figure out which way to set it by blowing in each side - one side it'll blow through the other it'll lock up.  Set it so it can blow air out but locks up when it tries to suck back into the crank (blows outwards from the oil tank).

Shucks/Oreilley's has them in boxes for you to open.

[zentrax]

Geirskogul is correct. The valve i use is a brass one way check valve designed for air compressor's etc. You can get them with either a nylon or brass internals, nylon has temp rating of 100 degrees c, brass 150.......ish. I use the brass but i dont think i had to, bit of overkill. As stated as long as you get a solid seal in one direction it's good :
). I ended up doing this kind of thing after being bitterly dissapointed with the bunn breather kit. Was big dollars for a bit of cheap plastic and hose which gave me big disapointment  . Place the hose from pcv/check valve outlet to chain, the miniscule bit of oil that comes out......eventually.... will do good here

[1 Thump]

Is there a specific size I should look for ? Does it plug directly into the crankcase, or into the tubing ?

Thanks.

[Geirskogul]

From oil tank - two inches of tubing - pcv valve - wherever you want it to go.