01-10-2015, 12:11 PM
I find it's typical of "power sellers" on ebay to put up a single picture of an item that they have multiples of to sell. That's fine for new items, but it's a pet peeve of mine that on "used" items they only picture their best looking one, then ship the ones sitting at the bottom of the pile. But I digress....
I used "medium" glass beads in my blasting cabinet for the cleanup. There is still some minor pitting in the gear teeth visible where the iron had been rusted away, but overall it's in good usable condition (now). The riveted cover retains the permanent magnet that excites the CDI ignition module. I vacuumed up the cast iron shavings after drilling and tapping the flywheel but you can see a lot of the shavings still stuck to the magnet in the 3rd pic. High pressure air gun removed those nicely.
Notes from the service manual:
The bearing race can be knocked further into the crankcase bore and wedge there, causing the crankshaft to rub directly against the opposite side of the aluminum crankcase housing. Another possible problem would be dislodging the governor flyweight balls (loose ball bearings) from the end of the crankshaft and falling down into the crankcase. Not a good thing to have aluminum shavings or hardened steel balls bouncing around inside a running engine obviously.
Gov-Na.jpg (Size: 26.21 KB / Downloads: 170)
I used "medium" glass beads in my blasting cabinet for the cleanup. There is still some minor pitting in the gear teeth visible where the iron had been rusted away, but overall it's in good usable condition (now). The riveted cover retains the permanent magnet that excites the CDI ignition module. I vacuumed up the cast iron shavings after drilling and tapping the flywheel but you can see a lot of the shavings still stuck to the magnet in the 3rd pic. High pressure air gun removed those nicely.
Notes from the service manual:
Quote:NOTE: A KNOCK-OFF TOOL IS NOT RECOMMENDED
FOR ENGINES WITH A BALL BEARING ON THE
MAGNETO END OF THE CRANKSHAFT.
NOTE: If a knock-off tool is used, the pounding may
cause the ball bearing to dislodge from the shroud
base and force the lower thrust face of the crankshaft
against the cylinder thrust face.
The bearing race can be knocked further into the crankcase bore and wedge there, causing the crankshaft to rub directly against the opposite side of the aluminum crankcase housing. Another possible problem would be dislodging the governor flyweight balls (loose ball bearings) from the end of the crankshaft and falling down into the crankcase. Not a good thing to have aluminum shavings or hardened steel balls bouncing around inside a running engine obviously.
Gov-Na.jpg (Size: 26.21 KB / Downloads: 170)
Willie