Throttle doesn't have a stop - Snowblower Forum : Snow Blower Forums
 
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post #1 of 10 Old 07-02-2015, 11:16 AM Thread Starter
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Throttle doesn't have a stop

I noticed that on my snowblower, the throttle doesn't have a stop. The snowblowers that I've seen, if you put the throttle all the way down, the engine cuts off.

But, in the one that i bought, that shut off mechanism isn't there. I don't know if the original owner took it off or it came like that. So, the only way to shut off the engine is the key near the handles.

Is this normal? And, should I install a shut off on the throttle?

Thanks!
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post #2 of 10 Old 07-02-2015, 11:56 AM
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Some older ones didn't have it, but yours might just be corroded or the wiring for it broken / disconnected.

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post #3 of 10 Old 07-02-2015, 12:19 PM Thread Starter
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The unit is about 20 years old. I've checked another snow blower and this one definitely doesn't have the shut off mechanism.

I'm wondering if I should install one. But, I guess I can just shut it off from the key, right? The only thing that worries me is what happens if the key shut off malfunctions, how do i shut it off?


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Some older ones didn't have it, but yours might just be corroded or the wiring for it broken / disconnected.
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post #4 of 10 Old 07-02-2015, 03:31 PM
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If need be you could probably pull the plug wire off if careful. Just don't touch anything metal when you do it. I don't think that will short the coil out, but it might. If you have a fuel shut off you could turn the gas off and wait a couple minutes. You could turn the choke on and that might kill it.

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post #5 of 10 Old 07-02-2015, 05:34 PM
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I would think that if it has a key to turn it on and off, it will not have a throttle "kill switch".
That is how most Yamaha an Hondas are.
If you think of the key switch failing and not having a back up system to turn the engine off, think the other way around, the engines that have a "kill switch" at the throttle usually do NOT have a key switch.
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post #6 of 10 Old 07-02-2015, 08:58 PM
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Another thing. If you can get to the terminals of the switch you could short them together with a piece of metal. That assumes the actual switch is the issue and not the wiring though.

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post #7 of 10 Old 12-28-2015, 10:31 AM
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This thread should explain how this all works and give your three options..

1) Throttle kill terminal
2) Carburetor box kill key
3) Independent toggle kill switch

Any combination of these three options will turn off the machine.

How to wire up carb heater box on MTD 5/24 with Tecumseh HS50-67324K
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post #8 of 10 Old 12-29-2015, 10:43 AM
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How about a make and model of engine/blower????
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post #9 of 10 Old 12-29-2015, 11:59 AM
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Quote:
Originally Posted by EnjoyLife View Post
I don't know if the original owner took it off or it came like that.
It came like that.

Quote:
So, the only way to shut off the engine is the key near the handles.
Yes, but that's by design.

Quote:
Is this normal?
Yes.

Quote:
And, should I install a shut off on the throttle?
no need, because the key is meant to turn it off.

basically snowblowers came without a key, and you shut it off with the throttle. Or they came with a key, and you dont shut it off at the throttle.
One or the other, but seldom both..

The key was probably intended to be a safety feature, so kids cant start the machine when the key is out..but the key is also inconvenient for the user, which means probably 95% of users just leave the key right in the machine, which defeats the safety purpose!

Scot


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post #10 of 10 Old 12-29-2015, 12:51 PM
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Quote:
Originally Posted by sscotsman View Post
It came like that.



Yes, but that's by design.



Yes.



no need, because the key is meant to turn it off.

basically snowblowers came without a key, and you shut it off with the throttle. Or they came with a key, and you dont shut it off at the throttle.
One or the other, but seldom both..

The key was probably intended to be a safety feature, so kids cant start the machine when the key is out..but the key is also inconvenient for the user, which means probably 95% of users just leave the key right in the machine, which defeats the safety purpose!

Scot
My Craftsman came with the key interlock, as well as an ON/OFF switch mounted on the rear cowling of the engine. The key switch has only been removed once, to test it. I always worried a bit about the toggle switch because it it not really rated for wet conditions, but it has done the job for 7 years so far.

I recently added an adjustable throttle assembly from Briggs and Stratton, and during the switch over, I discovered that the throttle assembly does have provision to add a contact that is closed when the throttle lever is moved all the way to slow. The switch would be closed grounding out the coil kill wire to stop the engine. The throttle plate I picked up on Ebay did not have the contact installed, so I don't have the feature, but it has a place for it if I ever decide to track down the part and install it.

Don't think I will bother since I have two ways to stop it at the moment and too many wires leads to more places to have trouble.,

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