My Toro 622 HSK60 76008B Won't Start - Snowblower Forum : Snow Blower Forums
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post #1 of 22 Old 02-22-2015, 01:19 AM Thread Starter
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My Toro 622 HSK60 76008B Won't Start

So new to these forums, and new to small engine repair for the most part.

But I have a Toro 622 Snow Thrower with a Tecumseh engine HSK60 76008B

Before the season started I changed the oil, changed the auger belt, did general maintenance, and everything was running smoothly.

First couple snowfalls everything was running swimmingly.

Then we got a big snowfall, with big drifts.

After going into a couple of the bigger drifts, I noticed the engine seemed to start running slower, or harder. It seemed as if the throttle was down, but it wasn't... Just to make sure I put the throttle down, and then right back up to full speed and it seemed to correct the issue.

It happened a few more times the next snowfall, but again... quickly turning the throttle down, and then back up to full speed seemed to rectify the issue.

Then the next time I went to use it, I couldn't get it to turn over.

The research I did led me to a few options to try...and after each attempted repair, the problem seemed to be exactly the same.

Here's what I've done (in no particular order):

1) Got the snowblower inside to warm up.

2) Replaced Spark plug

3) Replaced Fuel Line

4) Replaced Carburator

When I replaced the Carb, I bought an entirely new one off eBay. When it arrived it looked exactly like the old one, but was missing one screw the old original carb had. I spoke with the dealer and was told the new one I bought, which was listed as "OEM Tecumseh Engine 640081" was simply a newer version of the original carb that passed new emissions standards.

However after 2 weeks of doing all of these things to the Snowblower, it still is doing the same thing, I prime it, I start it, it begins to kick up, and then it dies.

Here's a video I took today of what it is doing...



Any help would be greatly appreciated, cause I'm at my wits end...

Thanks to anyone who helps in advance

Last edited by Greenway1313; 02-22-2015 at 01:30 AM.
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post #2 of 22 Old 02-22-2015, 01:42 AM
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Seems like it's still on choke in your video. Make sure it actually comes off choke when the choke is turned off. Another words, choke on is that the opening of the carb being closed by the choke plate and off choke is when the cab opening is not blocked off. So when the choke is open / off, the throat of the carb in unobstructed.

Last edited by all3939; 02-22-2015 at 02:03 AM.
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post #3 of 22 Old 02-22-2015, 01:48 AM Thread Starter
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Choke was off, or in other words the little metal door is open. lol
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post #4 of 22 Old 02-22-2015, 02:09 AM
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Are you sure your getting good fuel flow? Did you check for gas in the carb or maybe you took the carb bowl off and din't put it back correctly limiting fuel flow. Loosen the gas cap perhaps the vent is clogged not letting fuel go to carb.
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post #5 of 22 Old 02-22-2015, 02:16 AM Thread Starter
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Thanks for the reply,

I have tried it with the gas cap loose.

I have not really done anything to the carb since it arrived. Except for installing it on the snowblower, so everything should be ok in that respect.

Like I said, its mind boggling lol
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post #6 of 22 Old 02-22-2015, 02:23 AM
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If there is a spring loaded bowl drain see if gas cones out. If not then open the carb bowl and make sure gas comes through. Make sure cab bowl is oriented so the float is not restricted.
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post #7 of 22 Old 02-22-2015, 02:30 AM Thread Starter
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Today when I replaced the fuel line, I drained the bowl, and gas did come out.

I have not ensured the float is not restricted in any way.

Like I said, I haven't touched the brand new carb at all except for installing it onto the snowblower.
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post #8 of 22 Old 02-22-2015, 02:38 AM
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Another thing comes to mind.Make sure all the gaskets are in place. You may have a gasket on wrong and it may be blocking a small hole. The gasket has to oriented correctly to the carbs openings. If it isn't it just won't run right.
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post #9 of 22 Old 02-22-2015, 02:58 AM Thread Starter
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Well the only gasket I touched, was the one pictured here...in the plastic bag.



That's a pic of the new carb I bought, and attached to the engine.

I've never really touched more than just the draining screw on this new carb.

Except for the gasket pictured, that connects the carb, to the engine.
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post #10 of 22 Old 02-22-2015, 07:05 AM
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Quote:
Originally Posted by Greenway1313 View Post
So new to these forums, and new to small engine repair for the most part.

But I have a Toro 622 Snow Thrower with a Tecumseh engine HSK60 76008B

Before the season started I changed the oil, changed the auger belt, did general maintenance, and everything was running smoothly.

First couple snowfalls everything was running swimmingly.

Then we got a big snowfall, with big drifts.

After going into a couple of the bigger drifts, I noticed the engine seemed to start running slower, or harder. It seemed as if the throttle was down, but it wasn't... Just to make sure I put the throttle down, and then right back up to full speed and it seemed to correct the issue.

It happened a few more times the next snowfall, but again... quickly turning the throttle down, and then back up to full speed seemed to rectify the issue.

Then the next time I went to use it, I couldn't get it to turn over.

The research I did led me to a few options to try...and after each attempted repair, the problem seemed to be exactly the same.

Here's what I've done (in no particular order):

1) Got the snowblower inside to warm up.

2) Replaced Spark plug

3) Replaced Fuel Line

4) Replaced Carburator

When I replaced the Carb, I bought an entirely new one off eBay. When it arrived it looked exactly like the old one, but was missing one screw the old original carb had. I spoke with the dealer and was told the new one I bought, which was listed as "OEM Tecumseh Engine 640081" was simply a newer version of the original carb that passed new emissions standards.

However after 2 weeks of doing all of these things to the Snowblower, it still is doing the same thing, I prime it, I start it, it begins to kick up, and then it dies.

Here's a video I took today of what it is doing...

Watch My Snowblower Fail to Turn Over


Any help would be greatly appreciated, cause I'm at my wits end...

Thanks to anyone who helps in advance
Welcome to SBF there Green!

Are you using fresh fuel? If not, get rid of what's in that tank and put some fresh fuel in.

The earlier symptoms of the engine seeming overloaded when it shouldn't be... is often a sign of low compression There are usually 3 sources (valves/valve-clearance, blown head gasket or rings/cylinder bore). The valves (particularly the exhaust) are probably the most common followed by the head gasket (you'll see black sludge around the base of your cylinder head).


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