48" craftsman Riding mower.
I have a 48 ' Craftsman Riding mower. I have had the mower for 4 years with
app 450 hrs on the 25 hp Courage engine. The last cut I did with it , I slowed
it down to back up and the engine died! Locked up ! It was a hot day and I had
about 2 or 3 hrs of running time on it that day. That's usual for my cutting my
large lawn. Towed it back to my garage and still locked up. Had about 25 hrs
running time on the oil and it was still full. I pulled the engine and dropped
the crankcase bottom off and it looks perfect inside but the crank is locked
up. The rods still move on their journals and the cylinders look fine for what I
can see. I`m guessing the upper main is where the lock up is. I have not yet
pulled the heads off and the pistons out. If in fact I can get the crank out ,
is it possible to recon the the upper main journal and recon the block opening
for the crank journal? Hate to junk this engine ,but what caused the failure.
Has anyone run into this problem. I did have a Sears tech look at it and he said
he has had a few that did lock up , and said the customer used a breaker bar and
a socket to try to break the seize up on it and it worked and ran! I tried but
no success. Should I look at something else on it. The crank will not budge
either way but there is slack in the rods so I`m pretty convinced the crank is
seized. All info much appreciated. Russ
On Tue, 01 Mar 2016 22:44:01 +0000, Russ in the Ozarks
Years ago, I had a rider mower become very hard to turn, I could barely
move it with the pull rope, and the electric starter would not budge it.
It had a smaller Briggs engine. I think it was a 12HP. Anyhow, I took
off the top and found the generator assembly which (I cant remember if
it was under or on top of the flywheel), but it had come apart and was
wedged against either the crankshaft or the flywheel. It's been years,
so I cant quite recall all the details, but once I removed that
generator, the engine spun fine. So the problem was not inside the
engine at all. Pull off the cover and check to make sure nothing is
jammed on top or under the flywheel. It might not be indide the engine
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.