Small Engines (Lawn Mowers, etc.): Timing Marks, briggs stratton, cam gear

Question
Hi John,

I'm rebuilding a Briggs & Stratton 10A902.  I can't find any timing marks on the cam gear or the crankshaft gear.  How can I get this back together properly?  Here's the info:

Briggs & Stratton
Mod. #: 10A902
Type:   0426 A1
Code:   97020555

Thanks!

Answer
 Hello Joe:

 Is this the Plastic Cam Gear? If it is then the Outer Ring of the Gear will have a Recess (like a U)that is the Timing Mark. The Crankshaft Gear should have a Dimple or a Long Mark on the Tooth that Lines up with the U Recess on the Cam. Check both Sides of the Crankshaft Gear. Hope this Helps. Let me know what Happens, Please. I Enjoy knowing the Outcome. Thanks.

 Good Luck

 Respectfully

 John