OutdoorKing Repair Forum Forums Restoring, Customising and Modifying Tech Talk GV150 tuneup help needed

First, the easy bit. 8 is a timing chain. It runs around a small sprocket on the crankshaft and a large sprocket on the camshaft, so that the camshaft rotates exactly 1 revolution for each 2 revolutions of the crankshaft. This is at the bottom of the crankshaft, close to the large cover that goes across the bottom of the engine. You make a good point, though. Your GV150K1 has timing gears, where the original GV150 had a timing chain. The online parts list is for an early GV150 with a chain.
http://www.ereplacementparts.com/ho...ine-parts-c-37657_37658_38010_38030.html

Now, let's talk about the flywheel end of the crankshaft.

1. In your last picture, is the inner ring of the ball race a good fit on the crankshaft?

2. What is the diameter of the surface in the red circle?



3. Is the surface in the green circle eccentric to the rest of the crankshaft? If it is, it is a cam that operates the breaker points. This is a bit concerning, because Honda's manual shows the cam as being the first parallel surface after the flywheel taper - see red oval:


4. There is a narrow shiny surface inside the yellow circle. Is this where the lip of the oil seal has been touching the crankshaft? What is the exact diameter of the shaft right there?