If you applied for a job at pretty much any small engine shop - and
they asked you how to remove the flywheel on a lawnmower engine, - and
you told them you would use a flywheel puller, I PROMISE you would not
They would instantly know you had no experience or expertise working
on small engines.
On Tue, 13 Jul 2010 10:22:44 -0700, Smitty Two wrote:
I think we all agree at this point on two things:
1. Most experienced people use the pry-and-bang method to remove flywheels
2. Clearly it's embossed on my flywheel to use the tap-and-lift method
Further, since I had never worked on a lawnmower before (that's why I asked
for advice from you wonderful guys), the pry-and-bang method turned out to
be dangerous (since I broke many things trying it) and that the
tap-and-lift method turned out (for me) to work wonderfully.
So, I hope we can agree that advice to newbies should include not only the
most-often-used pry-and-bang method but also the suggestion to consider the
more appropriate tap-and-screw method.
Thank you. My only goal is to get the right answer and to post the results
to help the next guy. That's what the USENET is all about, isn't it?
If I had known what I know now, I would never have needed to ask the
question. Now I consider myself well versed on the various methods (both
good and bad) to remove a flywheel on my particular Craftsman Briggs and
Stratton lawnmower engine.
Yes. Completely. I'm sorry it took me so long to understand. I appreciate
your patience. I hope the next nntp reader benefits from our wonderful and
polite technical discussion.
Someone else mentioned the vibration/shock of whacking something
with a hammer. It's an old trick that works for things like plumbing.
Hold one hammer on one side of the plumbing, hit the other side with
another hammer. Doing it in as many places as possible loosens up the
Hitting a bolt head sometimes helps loosen it. It's seldom that I
hear of things vibrating tight.
If nothing else whacking something with a hammer a few times is a
good stress reliever.
On Mon, 12 Jul 2010 20:05:58 -0500, Dean Hoffman wrote:
By now, I'm convinced the shock and awe method of hammering and prying
works, but I wouldn't recommend that method except on someone elses' mower!
Pictures here of my mower. I learned a LOT from you guys! Thanks!
Short Link: http://yfrog.com/6zimage001oljx
The "preferred method" is to use a puller because the risk of damaging
other components is lessened. But, the "traditional method" also works
well for those with experience.
The experienced mechanic will probably use the traditional method due
to the TIME it takes. Time is money for the professionals. They can
remove a flywheel in a couple minutes as compared to having to tap
holes and use a puller which may take much longer.
I have used both methods on various engines. Most motorcycle engines
use a totally different type of puller and MUST be used because of the
weak metal surrounding the flywheel to pry on (replacing a motorcycle
case gets expensive and time consuming.
On some of todays generators, the only way to get the armature off the
engine is to use a hammer.
In closing, whatever works for ya! You can't argue with success.
I uploaded some pictures which show the Briggs & Stratton flywheel and even
the instructions on the flywheel itself to tap the holes.
Short Link: http://yfrog.com/6zimage001oljx
It's pretty certain by now that the traditional shock and awe method works;
it's just not the correct approach for this type of engine (according to
Briggs and Stratton and Sears).
I ruined my flywheel and intake manifold trying that hammer & pry method,
so, if you are going to use the brutish approach, it's best you use it on
someone elses' engine. :)
Thanks for all the help. I learned a LOT about lawnmowers. I'll let you
know when it's all back together (parts haven't arrived yet).
I realized I didn't have actual pictures of the flywheel being removed, so
I'll re-enact them tomorrow in the daylight and add them.
No, you ruined your flywheel by doing the right things the wrong way.
You are simply inept.
I'm sure there are probably some things that you are good at. There
may even be some things that you are VERY GOOD at. Fixing machinery,
however, is OBVIOUSLY not on that list.
You are 'assuming something not in evidence'. That they say to use a
puller in that stamping does _not_ say 'not to use the traditional pry/
hammer method'. I gaurantee you that if you were to take that mower
to a shop and point out the instructions they would laugh and when you
turned you back there would be a thump and the flywheel would be off.
At this point I wonder if you are a troll. You come here for advice,
you get it, it is confirmed by everyone who ever actually worked on
small engines, you then spend hours trying to prove them wrong. There
is little doubt a puller does a fine job on that task, I have a box
full of them, many do only one specific task, box must weigh over 50
pounds, there are some tasks that they are the only way to accomplish.
This task was was, deliberately I think kept to minimum tools
required. This is a tried and true method. I have a friend like you;
he comes up with a problem and goes person to person asking for
advice. He never takes it, he does what he was going to do anyhow, he
just likes asking and getting advice. He is more polite than you, he
doesn't argue, he just ignores everything you say. By any chance are
you a Sagittarius?
On Tue, 13 Jul 2010 06:48:03 -0700 (PDT), Eric in North TX wrote:
Actually, I took the advice I was given.
I even bought the recommended Briggs & Stratton flywheel puller tool which
is supposed to protect the threads of the crankshaft as you bang on it (see
the photos). http://yfrog.com/6zimage001oljx
It just didn't work for me.
Partly because I screwed up royally (I always said this is the FIRST
lawnmower engine I've ever worked on). But also partly because I found out
after the method failed for me that it isn't the recommended method.
To be precise, I'm SURE the method works for most of you. I'm absolutely
positive of that, even if I'm not quite sure HOW it works - it certainly
must work for most of you because you all say so.
Anyway, I took all your advice. I screwed up. I found a better way (at
least from my perspective). And I took photos of it. I annotated those
photos. And I responded to all the serious queries.
I do thank you all.
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