I'm having similar problem with my Craftsman, and I just discovered what I believe is the problem. There is a round-ish plastic plate/cover that is mounted inboard of the front wheels that is designed to keep clippings and debris out of the area where the drive gear meshes with the teeth on the inside of the wheel. This plastic cover and the wheel itself each have a flange, and when the wheel and cover are in place, these flanges are located in very close proximity, and are fairly effective in blocking debris from getting up into the vicinity of the gears.
The problem is that when rolling over thick or even slightly uneven ground the plastic cover can drag the ground and this will force the cover's flange to bind against the flange of the wheel. Once these flanges become in a "bound" state they tend to remain engaged and since the cover does not turn, the wheel does not turn as well.
I believe this is a design flaw that might be resolved by either:
1. obtaining larger front wheels which would cause the plastic flange to be higher above the ground and thereby less likely to come in contact with the ground,
2. to re-engineer or modify the plastic cover, and/or its flange, or
3. to remove the plastic cover altogether.
I intend to look at the parts shops to see if there are replacement front wheels that will fit this mower, but assuming that is not achievable, I am going to trim the plastic cover's flange - e.g., removing the flange from the very bottom /lower portion of the cover. This is the portion of the flange where the cover and the wheel's flanges are binding. A larger wheel might be the optimum, but I am pretty confident that trimming a few inches of the plastic flange will greatly improve the situation.
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4 Kommentare
FYI, I had a similar problem where the left front wheel of my Troy-Bilt TB230 suddenly stopped moving forward. After hitting a piece of plastic or something in my yard, the mower's front left wheel would make one revolution and then jam and stop, and I could pull it in reverse about one revolution and it would stop. To examine it, first I pulled the spark plug wire. Then I used a socket wrench and removed the wheel and inside there was a piece of broken plastic that got caught in one of the gear teeth inside the wheel. This is a self propelled mower, so the front wheels have gear teeth that fit into a corresponding powered gear to propel forward when engaged. I have removed the piece of plastic but have not reattached the wheel (due to incessant raining here in Austin, TX) but am certain that was the problem. There is a interior gasket or cover to the wheel that is damaged, so I think that's how the stray piece of shrapnel plastic got inside the wheel. Hope this helps.
von Eduardo Montalvo
I had a similar issue. There is a plastic cover that is meant to block clippings and mud from jamming the wheel gears. It was broken so i made a new one of thin aluminum.
von Gregory Miller
I have a Briggs and Stratton push mower about 20 yrs. old. Works great but
today I tried to engage the drive lever but it would only engage part way
preventing the the self propel from operating. Wheels spin fine but no
self propel. Any clues as to why the drive lever does not fully engage.
Thanks.
von Andrea
Is this site up and running?
von Andrea