Poulan PO17542LT flywheel fan replacement
Today I will show you how easy it is to replace a flywheel fan and pretty much why do you need to replace it. So far we didn't cover anything like that on this site, but it took me hours of trying to find a tutorial on that procedure and I was not able to find it. I decided I will post it here.
Well, I bought a good riding lawnmower, Poulan, for a really good price. It had screen missing and had a black colored fan on the top of the engine. I did not know it's purpose, but after cutting my yard, I noticed that it appears that my lawnmower is overheating.
I asked around on forums if it's normal for lawnmower to be that hot after working on it and was told that my flywheel is damaged and needs to be replaced.
I searched on internet and determined that I just needed to replace my flywheel fan and it would be smart to get on it a screen that would protect the flywheel fan from debris, bugs, etc.
I would recommend replacing everything with OEM parts, which are not expensive at all for this specific procedure.
The engine on Poulan is Briggs and Stratton. I will not give you specific web site to order as there are many places to get the items, including eBay and amazon.
If you have the same lawnmower, get part number 796201, which is flywheel fan and screen cover. I am sure that if your flywheel fan is broken, your screen is probably broken too.
I also ordered Briggs and Stratton Fly Wheel Puller, but it turned out that I needed it only if I wanted to remove the whole flywheel, not just the fan.
Once you got your flywheel fan and screen, it time to get to the job. Make sure you have all necessary tools.
You will definitely need a flat head screwdriver, 10mm and 24mm wrench tools. First thing to do is lift the hood and unscrew four bolts around the engine's body. Two are in the front and two are in the back.
If it's hard for you to remove two bolts in the back, you may want to remove two bolts securing the gas tank, which are also 10mm size.
Once the gas tank bolts removed, gently push the tank away from the engine. That should give you more clearance space in removing the remaining two bolts.
Once bolts are removed, lift the engine body up. Chances are the body is dirty and you may want to clean it up.
Now take your flat head screwdriver and pry open the cover. Most likely yours have Briggs and Stratton logo on it.
Once it's open, you'll see a 24mm bolt inside. You will probably need a deep socket wrench to reach it. You will notice that when you try to unscrew the bolt, whole flywheel rotates with the bolt. You need to put something under flywheel to stop it from moving. I used a pry tool and it did its job.
Once something is there, remove the bolt. When bolt is removed, you can easily take off the flywheel fan.
Put the new flywheel fan in its place; make sure all holes are aligned. On top of the flywheel fan, put the screen cover. Secure it with the same 24mm bolt. All you have left to do there is put on top the plastic cover (which can be removed later with a flat head screwdriver by prying it open.)
Now put the engine body (hopefully cleaned) back on its place. Secure all 4 bolts. Then put gas tank back in its place (if you had to move it) and secure it with two bolts. Don't forget to use washers if you had them.
That's all. Everything is done. If you want to, double check that the screen and flywheel fan can rotate without disturbing the body. You should not have any issues there as I did not have any problems. If it will have issues, make sure your engine body is aligned properly.
You are all done. If you are unable to do it properly, just hire someone to do it. It was an easy fix for me, but I am sure mechanic wouldn't charge over a $100 for such an easy repair.
If you have any questions, feel free to post them here. As always, this article if for information purposes only and I am not responsible for any damages or harm that may be done to you or to the equipment. Always use caution and common sense.