Question about Lawn Mowers
While using my Craftsman Model 536.887251 Snow Thrower it became stuck in drive. I released the Traction drive lever and it kept on rolling. After a couple of tries of holding it and releasing it I finally had to shut the engine to get it to stop. Now the wheels are locked and the I am unable to move the shift lever.
I have just taken apart my Troy-Bilt Model 5521 so now I can see how all the bits fit together.
The electric starter is a separate device that engages with the cogs on the outside of the engine flywheel.
The cord pull engages the flywheel at the centre.
The fact that the cord pull starts the engine is a good thing.
If you dismantle the blower and take of the top cover (very annoying with many bolts all over the unit, take a look at the spare parts guide to see the exploded view) the starter it comes away with the power cord.
You can plug this in to the main supply and press the start button and you should see the small cogged teeth turning about 200 rpm. Keep your fingers clear.
I am guessing that this is not working at all. Either that or the cog wheel has shaved the teeth off or it is jammed.
This is a good do it yourself project for someone who doesn't mind getting their hands dirty.
It should take about 3 hours to take the unit apar and another 2 to put it back together.
Troy Bilt doesn't sell the starter motor or the engines (mine had an engine seize with a broken main bearing and a broken piston).
I suspect that the resellers don't have these parts either. But someone does.
Posted on Dec 22, 2008
If the engine has a float type carburetor, remove the float cover and see if the float is hung in the down position. If so free it up and make sure it will now operate freely up and down. If not and the bowl is full of crud, you will have to remove and clean the carb.
Posted on Mar 13, 2009
Just found the same problem with mine. The bearing on the gear shaft is frozen. To replace these, follow the instructions in the manual to replace the friction wheel, then tap out the bearings in the side of the case, you'll probably find one frozen up. As long as you're there, might as well put in a new friction wheel. Mine is looking pretty worn after fighting the bearings all winter.
Posted on Apr 19, 2009
SOURCE: My Yard Machines snow blower
The bearing can be a bugger to remove....and it sounds like the bearing may also be bad... so you will want to replace that also...
To get it off make sure that the set screw(s) are backed out with an allen wrench...the set screws will be in a small hole in the lip of the bearing....an allen wrench is a six sides wrench that comes in many sizes... the screws may also be a metric size...
then to remove the bearing you will need to use a gear puller that will grab the bearing equally with thre jaws and the use the shaft for leverage as you turn the screw to pull the bearing off of the shaft...
You will bugger up the shaft if you keep trying without the proper tools and then you will really have a mess on your hands...
Posted on Dec 21, 2010
It sounds like you have sheared a roll pin. Look at the auger that is not turning, on one end you will see a hole, there is a steel pin that goes through the shaft, I am pretty sure that pin has sheared and allows the auger to spin freely on the shaft. You may have to find a small punch and drive out the broken piece before inserting new one. Seeing how the auger has been spinning on the shaft you're gonna have to line up the hole in the auger with the hole in the shaft. Look at the good side to see alignment. Hope this helps ya.
Posted on Dec 21, 2010
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