this post was submitted on 05 Oct 2024
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Homestead

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Anybody here who knows about lawnmowers? (sh.itjust.works)
submitted 23 hours ago* (last edited 23 hours ago) by [email protected] to c/[email protected]
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In search of a dedicated small engine community I come here.

I have an older husqvarna frontrider with a hydrostatic transmission. While checking the transmission oil I noticed that the fan had broken of most of the blades.

Looking at the transmission cover I can see that it has been grazed by the blades, suggesting that the fan has been pulled sideways.

The oil check was part of a small service, that I was doing since I had to replace both belts going to the cutting deck as well as the belt in the deck. Those belts died when the belt tensioner, in middle of the mower, came loose and dangled beneath the mower.

My questions are these:

  1. WTF?
  2. If the belts have pulled that much in the engine driveshaft, as to do this, what else would you look for before starting the mower again?
  3. Given that it's about 10°C outside, would you run the mower without a fully functioning fan?
  4. Have I missed something? Any wisdom you wish to impart?
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[–] mvirts 6 points 21 hours ago (1 children)

If you can, I recommend waiting until you can replace the fan. Maybe this fits?:

https://www.amazon.com/Husqvarna-Fan-black-1a646083070-Replaces-414415-583350101/dp/B00TD59K9K/

Have you discovered why the tensioner failed?

If you haven't already, considered getting new belts.

[–] [email protected] 7 points 17 hours ago

If you can, I recommend waiting until you can replace the fan. Maybe this fits?:

https://www.amazon.com/Husqvarna-Fan-black-1a646083070-Replaces-414415-583350101/dp/B00TD59K9K/

Thanks, I've already found a local source though. I'm in Denmark and much of the stuff on Amazon doesn't ship here. It does look exactly like the one I need. The part number in my manual is 5069868-01

Have you discovered why the tensioner failed?

My theory is that I attempted to cut too much too fast. Normally I'll just rip belt #2 in the picture below. This time shaft #14 came loose from bolt #15 so the entire assembly dangled below the mower. The tensioner pulley #25 may have gotten stuck, because it was demolished in the process. Part of a parts diagram for a Husqvarna rider r16c

If you haven't already, considered getting new belts.

Oh, I have. I replaced belt #3, as well as pulley #25 and the belt in the cutting deck. Belt #3 and the cutting deck belt was ripped, while I belt #2 seems ok. I did order a replacement for #2 though. Just kinda annoyed that I didn't notice the fan issue earlier, because I was really planning on giving the garden an autumn mowing this weekend.