Toro 826 dies when microswitch disengages - Snowblower Forum : Snow Blower Forums
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post #1 of 12 Old 01-08-2017, 02:15 PM Thread Starter
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Toro 826 dies when microswitch disengages

I just cleaned and tuned the carb on my 1978 Toro 826. Starts, idles and revs pretty good. But anytime I start to move any lever the snow blower dies. So basically before there is even a load put on the motor it dies. I noticed with the gear lever there is a neutral switch (called microswitch on part fiche) and once the lever no longer pushes it the engine dies, which is long before the lever locks any gear. I can push the blower with booth clutches engaged and I can turn the auger by hand without a problem so I think there is nothing seized. Anyone know what where I should be looking?
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post #2 of 12 Old 01-08-2017, 02:59 PM
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I've gone crazy diagnosing the micro switch safetys...usually it isn't the switches, but the little module on the block that the safetys plug into. I've spent hours testing micro switches and tracing wires and it is always the safety module on the block. I got them on e-bay as Toro discontinued them.
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post #3 of 12 Old 01-08-2017, 03:38 PM
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I disconnected it on my toro.


-efisher-
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post #4 of 12 Old 01-08-2017, 06:33 PM Thread Starter
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Originally Posted by cranman View Post
I've gone crazy diagnosing the micro switch safetys...usually it isn't the switches, but the little module on the block that the safetys plug into. I've spent hours testing micro switches and tracing wires and it is always the safety module on the block. I got them on e-bay as Toro discontinued them.
I am having trouble finding the part number in the micro fiche. I did find this on ebay.
Used Toro Safety Module Part # 28-4520 | eBay
Is this what I am looking for?
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post #5 of 12 Old 01-08-2017, 06:35 PM Thread Starter
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Originally Posted by e.fisher26 View Post
I disconnected it on my toro.


-efisher-

I guess if the safety circuits remain open then the module gets tricked in thinking the traction/auger are not engaged?
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post #6 of 12 Old 01-08-2017, 06:39 PM
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Bandito...the ones I've played with were a 1 inch cylinder by 5/8 high that had a metal tab on the bottom to bolt on the engine and a wire coming out the top to go to the saftey wires. I'll look and see if I can find one on ebay
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post #7 of 12 Old 01-08-2017, 06:50 PM
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Sorry Bandito.....I've done so many Toros in the last few years I'm misremembering...I looked up the 38150 Toro 826 with the Briggs engine on partstree .com and didn't find the module I thought would be there. I fixed a few last year with the one I was thinking of but they were from the 80's...my bad
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post #8 of 12 Old 01-08-2017, 07:21 PM Thread Starter
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Quote:
Originally Posted by e.fisher26 View Post
I disconnected it on my toro.


-efisher-
Quote:
Originally Posted by bandito View Post
I am having trouble finding the part number in the micro fiche. I did find this on ebay.
Used Toro Safety Module Part # 28-4520 | eBay
Is this what I am looking for?
Quote:
Originally Posted by cranman View Post
Sorry Bandito.....I've done so many Toros in the last few years I'm misremembering...I looked up the 38150 Toro 826 with the Briggs engine on partstree .com and didn't find the module I thought would be there. I fixed a few last year with the one I was thinking of but they were from the 80's...my bad
No worries. I am thankful that you helped. I will hopefully look for it on the snowblower in the next few days and find out what it looks like. This is the fist snowblower I have ever had and your reply did help me better to understand how snowblowers work and how to better trouble shoot. Thanks again.
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post #9 of 12 Old 01-08-2017, 10:09 PM
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I guess if the safety circuits remain open then the module gets tricked in thinking the traction/auger are not engaged?


Exaclty, so when starting eng, it must be in neutral, and auger disengaged, or it runs away. Since its in neutral when shut off its not an issue....for me.


-efisher-
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post #10 of 12 Old 01-09-2017, 06:28 PM Thread Starter
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Exaclty, so when starting eng, it must be in neutral, and auger disengaged, or it runs away. Since its in neutral when shut off its not an issue....for me.


-efisher-
It works! Thanks. Ironically this whole time I thought it was dying because of the carb. Probably never had to touch it. Anyways for your help.
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