Hi fellow cubbys,
I am fairly new here. Bought a 1641 a few weeks ago that needed an overhaul.
On idle, the engine didn't appear to smoke, but full throttle - it smoked bad. Plus, it didn't have enough power to pull the mower deck.
So I bit the bullet and started tearing it down. Engine is cleaned up and on the work bench - the valves are carbon up bad from all the oil burning - so I took the heads to a shop to have a valve job done.
I opened the crankcase and found this::::
Lying loose in the bottom of the crankcase.
Where could it have come from?
Actual size - about 1 inch long X 1/8 inch thick.
The cylinder walls look new - perfect condition. The only possible damage I can find likely caused by this spring being in the crankcase is one rod end has a score on it where it bolted to the crank. The crank has very minor discoloration from this rod, but can't feel anything rough... It appears to be okay.
I ordered a new rod with pistons, rings, and gaskets.
Back to the foreign object.
Does anyone recognize this spring as being part of a 1641's Briggs Vanguard engine?
Is it supposed to be connected to something in the crankcase? I can't find where it would have been...
How could it have gotten in there?
Thanks for your help.
Fred