Predator engine for Toro 521? - Snowblower Forum : Snow Blower Forums
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post #1 of 12 Old 02-02-2015, 12:10 AM Thread Starter
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Predator engine for Toro 521?

I'm about to make a purchase of a Toro 521 which the owner says the engine won't run. I always make a point of proving others wrong....

At any rate, if it is not operational, has anyone installed the Harbor Freight Predator 212cc engine for this model? Not sure - from what I've been reading on the site, it's been done with a larger model - 724, etc.

Any thoughts? I wouldn't mind tinkering a bit and would put a smile on my face....

Should mention - this is my first post - I currently own a Powerlite that is on its last legs. I've got a great story that goes with that one....

- Adam
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post #2 of 12 Old 02-02-2015, 12:22 AM
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The Predator should work fine for you.

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post #3 of 12 Old 02-02-2015, 02:59 AM
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Yes, Like Shryp said it would work well and will be more powerful than the original 5hp and many people have repowered their Toro 521 with these engines.

Last edited by GustoGuy; 02-02-2015 at 03:06 AM.
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post #4 of 12 Old 02-02-2015, 06:39 AM
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ALOHA from the frozen TUNDRA.:ee k:

Long LIVE THE POWERSHIFT!! MAY IT NEVER RUST IN PEACE!!
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MAHALO!!!!!!!!!
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post #5 of 12 Old 02-02-2015, 07:35 AM
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welcome to the site.
yes, I have installed a predator on a Toro 421 (same frame as 521) and it was extremely easy. straight bolt up. I bought two new pulleys, larger pulley installed for the impeller (3") and it threw very nice. only thing from memory I had to do was the crank chute had to be extended wider to clear the engine.

Current machines-
1978 Bolens 8/24 (Loncin 420cc engine upgrade)
1986 toro powershift 6/24 ( 212cc Predator upgrade)
1988 Simplicity 860 (Predator 301cc upgrade)
1995 Honda HS 621
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post #6 of 12 Old 02-02-2015, 10:10 AM
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Buttchet

What size belts did you use? I was hoping to use the stock ones if possible.
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post #7 of 12 Old 02-02-2015, 10:38 AM
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The 212cc HF motor will add significant punch to that Toro 21 incher. The pulley will be a 3/4 on the HF motor, and it is always easier if you can use the same pulley from the other motor. Tractor Supply has a wide variety of belts, as does NAPA.
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post #8 of 12 Old 02-02-2015, 11:59 AM
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I had a Toro 3521 that I put one of the older 6.5 HP Greyhound engines on. I used the original pulley and belts and a 2x4 block of wood to move the crank out.




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post #9 of 12 Old 02-03-2015, 12:45 AM Thread Starter
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Welp - got the old girl home tonight. Changed the spark plug, a bit of starting fluid, and we had fire! I guess I won't be making the change just yet.

It was dark when I got home, so I didn't get a chance to get the model/serial off of it yet, but by the end of an hour or so of cleaning the linkages, changing the gas, checking the oil, etc... - I had it running pretty nice in 9 degree weather at the first choke notch - so I think I accomplished something.

In regards to this engine, it seems from a quick ebay search that there are multiple listings for brand new carburetors in the $20 range. Are they any good? Kind of seems to be to good to be true. Appreciate your insight.

Thanks - Adam
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post #10 of 12 Old 02-03-2015, 01:36 AM
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If you have a 3/4 shaft and want to use the same pulleys and belts (advisable) a 212cc Predator would give that machine quite a nice boost

The meltdown is under way ...
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91' Toro Powershift 824/Predator 301cc
05' Toro 3650/ 6.5 RTek
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