I brought my Briggs & Stratton 16.5 tractor in for it's inaugural oil change. While draining the oil, I hear a little "plop" and find a small round half piece of metal with a cam on it about the size of a watch battery. I don't think there is any damage as of yet, but I have pulled the bottom half open. any guess as to what this part may be?

KeepItSimpleStupid

Post a picture via "go advanced"

First idea. Part of the piston from a previous repair especially if the part was aluminum.

kevandkaye

thanks for the advanced option reminder, I have done no previous tear-ins on this motor, but always have taken very timely maintenance of it. The last fwe years though, it was always tough to crank. I'm assuming valves were tight. here's a pic of the junk that was in the pan http://ph.groups.yahoo.com/group/vhs...browse/271f?c= I think it may be from the bottom or top pushrod area, still tearing into it.

KeepItSimpleStupid

That's a members only group of yahoo groups.

SteveWard3928

You stated you brought in in for the inagural service. What did the repair guy say?

kevandkaye

I'll get that pict thing straight yet! by inaugural, I meant annual spring tune up... I usually do all the regular maintenance myself.... maybe this works? Under the cam gear there seems to be a part with a piece of plastic, a sprung spring, and nothing else... could this be whats been "eaten"? and whats it called?

SteveWard3928

The picture works

SteveWard3928

Yep that dawned on me after I hit the submit button. I am afraid I cannot help ya. I will back out of this question.

KeepItSimpleStupid

You can re-size pictures with IrfanView - Official Homepage - one of the most popular viewers worldwide.

kevandkaye

here's the whole mess