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1/18/14 1:45pm - Original Message: 'Snow blower adjustment'
Adam Wartell Lifetime Member
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Eagleville, PA - USA

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Used to own a 1979 Corvette now owned by JB79

Joined: 11/1/2001
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I replaced the carb, changed the oil, fuel, fuel filter, and belts all in an effort to get this thing to run right.  It mostly does, but I can not move the choke to OFF even after the engine is hot.  I have to put it on FULL to start it and immediately move it to HALF.  If I move it any lower than half the engine will shut off.  Below is a video of it running with HALF choke and hot.   

Please tell me why the squarish silver thing in the middle of this video (I think it is the throttle control) moves by itself making the engine speed faster and slower.  This throttle is linked by a metal rod to a lever. That lever is connected by a spring to the manual throttle (the rabbit/turtle) control on the outside of the carb cover.  When the engine is off, moving the manual throttle control makes this throttle on top of the carb move (open or closed). I leave the manual throttle lever on "rabbit" when I start it.  If I move it down all the way, the engine will shut off.  If I move it half way, nothing seems to happen.

This is a John Deere TRS22.  Any advice would be great!

Here's the video:


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1/18/14 2:10pm - Reply: 'Re: Snow blower adjustment'
corvette440hp Lifetime Member
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Adam, the squarish metal part I believe is the engine governor. I believe that you still might need to adjust your throttle control to insure that you reinstalled it properly to get the full travel of the carburator. Also you need to insure that the choke lever will totally close the choke when you are at full choke position. Just for reference, my snow blower only likes to run in cold weather with the choke in the mid position. If I open it fully the engine stalls out. Remember that's in cold weather. I hope this might help.  

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1/18/14 5:00pm - Reply: 'Re: Snow blower adjustment'
manget1 Lifetime Member
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Indianapolis, IN - USA

Vette(s):
Silver 1974 Convertible - L82 4 speed Low miles (was only 8,900 when I bought it in March 2006) - Now 42K miles. Original owner bought it as an investment for son's college expenses. 2008 Jetstream Blue Convertible - DAILY DRIVER!!

Joined: 9/3/2006
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Adam, I think the key is not to try to make the kind of adjustments Terry Moore did a couple of years back!
 
Sorry, had to...


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1/18/14 5:01pm - Reply: 'Re: Snow blower adjustment'
Sarge81 Lifetime Member
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WEST SENECA, NY - USA

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1981 Blue Ice Met. w/pearl ghost flames TKO500 5speed. LS1 Swap 3.45 Dana 44.

Joined: 12/3/2001
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First is there a screw on the bottom of the float bowl? That's the round bowl shaped thing on the bottom of the carburetor. Some have a screw and some have a plain brass nut holding the bowl on. 

If it has a screw at the bottom, gently turn the screw in until it stops. Back it out 1.5 turns. If it doesn't have the screw it's a fixed jet, no adjustments.

The tiny screw on the side of the carburetor just above the float bowl (not the screw with the red spring in the video.) Turn that in gently then back it out 1.5 turns. 

This will get you a baseline adjustment. Try starting it. If it starts and idles to fast you may want to back off of the screw with the red spring in the video. That is the idle screw. It looks to me in the video it's cranked it kinda far. If you look down the carb past the choke blade to the throttle blade it shouldn't be hardly open at all. 

If you get it started and idling. Let it warm up. Then turn the tiny screw above the float bowl in until it stutters or stalls. Back out screw a little bit and restart. Turn it out until it smooths out. This will set the idle air fuel mixture.

Run the engine wide open throttle. Turn the screw on the bottom of the float bowl in until the engine stumbles. Then turn the screw out until the engine stumbles again. Set that screw in-between the points of where it stumbled in and out. The engine should be running smoothly at wide open throttle then. That will set the power adjustment. 

Here are a couple good videos that explain things a little better. 



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1/18/14 11:19pm - Reply: 'Re: Snow blower adjustment'
KDADDY79
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Dutchess County, NY - USA

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White '79 Corvette. It's a driver.

Joined: 8/27/2007
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That screw at the bottom of the float bowl in the carb (that Sarge just mentioned) has been the culprit with my snow blower a few times.

I've had luck removing it and checking to see that both tiny pass thru holes in it are clear. Old / dirty gas can clog them. I clear them out using a single piece of wire from a wire brush.

Then follow sarge's instructions after re-installing the screw. 


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1/20/14 7:38am - Reply: 'Re: Snow blower adjustment'
Adam Wartell Lifetime Member
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Eagleville, PA - USA

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Used to own a 1979 Corvette now owned by JB79

Joined: 11/1/2001
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Hey guys. I appreciate the help, but I still have one question. Why does that throttle thingy move by itself as it is idling. Is it supposed to do that? 

Looks like I'm going to get to use the thing tomorrow. 4-7" expected to fall.


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1/20/14 11:31am - Reply: 'Re: Snow blower adjustment'
Sarge81 Lifetime Member
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WEST SENECA, NY - USA

Vette(s):
1981 Blue Ice Met. w/pearl ghost flames TKO500 5speed. LS1 Swap 3.45 Dana 44.

Joined: 12/3/2001
Posts: 2376
That throttle thingy isn't supposed to move causing the engine to surge. The only time its supposed to move is when you move the throttle to speed or slow the engine speed. Or when you start getting into heavy snow the governor (which part of it) is that rod thingy connected to the throttle will move the throttle automatically to keep the engine speed up in the "power band."

If the engine is still surging there is either a bit of dirt in the carburetor or it's not totally adjusted properly. 

Too bad I didn't live closer to you. I'd have that little Tecumseh engine singing. 


|UPDATED|1/20/2014 9:31:58 AM (AZT)|/UPDATED|


____________________________________

GEN III 5.7L "LS6" Engine swap
TKO500 5 spd.
3.54 Dana 44
'69 "N11" Sidepipes
Borgeson Steering Box
Born 8/1981
Sequence #3975




Click here to see more pics of my Vette on CarDomain.


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1/20/14 12:51pm - Reply: 'Re: Snow blower adjustment'
Adam Wartell Lifetime Member
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Eagleville, PA - USA

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Used to own a 1979 Corvette now owned by JB79

Joined: 11/1/2001
Posts: 14705
Sarge81 said: That throttle thingy isn't supposed to move causing the engine to surge. The only time its supposed to move is when you move the throttle to speed or slow the engine speed. Or when you start getting into heavy snow the governor (which part of it) is that rod thingy connected to the throttle will move the throttle automatically to keep the engine speed up in the "power band."

If the engine is still surging there is either a bit of dirt in the carburetor or it's not totally adjusted properly. 

Too bad I didn't live closer to you. I'd have that little Tecumseh engine singing. 





You always like a nice drive!  Come on down! :D
Thanks for the help.


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-Adam Wartell
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1/20/14 2:45pm - Reply: 'Re: Snow blower adjustment'
dads2vette Lifetime Member
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Ash Fork, AZ - USA

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1981 Red Interior White exterior

Joined: 4/18/2007
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Adam Wartell said:
Sarge81 said: That throttle thingy isn't supposed to move causing the engine to surge. The only time its supposed to move is when you move the throttle to speed or slow the engine speed. Or when you start getting into heavy snow the governor (which part of it) is that rod thingy connected to the throttle will move the throttle automatically to keep the engine speed up in the "power band."

If the engine is still surging there is either a bit of dirt in the carburetor or it's not totally adjusted properly. 

Too bad I didn't live closer to you. I'd have that little Tecumseh engine singing. 





You always like a nice drive!  Come on down! :D
Thanks for the help.



Cool, sounds like a road trip, I'll bring mine along since mine is doing the same thing!

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1/20/14 8:06pm - Reply: 'Re: Snow blower adjustment'
Sarge81 Lifetime Member
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WEST SENECA, NY - USA

Vette(s):
1981 Blue Ice Met. w/pearl ghost flames TKO500 5speed. LS1 Swap 3.45 Dana 44.

Joined: 12/3/2001
Posts: 2376
dads2vette said:
Adam Wartell said:
Sarge81 said: That throttle thingy isn't supposed to move causing the engine to surge. The only time its supposed to move is when you move the throttle to speed or slow the engine speed. Or when you start getting into heavy snow the governor (which part of it) is that rod thingy connected to the throttle will move the throttle automatically to keep the engine speed up in the "power band."

If the engine is still surging there is either a bit of dirt in the carburetor or it's not totally adjusted properly. 

Too bad I didn't live closer to you. I'd have that little Tecumseh engine singing. 





You always like a nice drive!  Come on down! :D
Thanks for the help.



Cool, sounds like a road trip, I'll bring mine along since mine is doing the same thing!

Yes I do enjoy a nice drive…in the spring/summer/fall. My aching back doesn't do long winter drives well. I drive one of those very large dump trucks plowing town roads all winter. They pound the heck out you. Otherwise I'd be more than happy to take a run out your way. 
You could ship the carb out to me and I could go through it if you want. I just did 2 carbs for Tecumseh snowblower engines this winter season so far. Just cover parts and shipping. 

Dave, now your around the block from me. lol. If you need help with yours just give me a holler. 



____________________________________

GEN III 5.7L "LS6" Engine swap
TKO500 5 spd.
3.54 Dana 44
'69 "N11" Sidepipes
Borgeson Steering Box
Born 8/1981
Sequence #3975




Click here to see more pics of my Vette on CarDomain.


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1/22/14 11:02am - Reply: 'Re: Snow blower adjustment'
Adam Wartell Lifetime Member
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Eagleville, PA - USA

Vette(s):
Used to own a 1979 Corvette now owned by JB79

Joined: 11/1/2001
Posts: 14705
So, I did not get a chance to attempt to adjust it correctly before using it yesterday. It was mostly fine, but the longer I used it, and the more clogged up the auger and chute got, the worse it behaved. It would sputter and "backfire" and get near stalling.  I watched the video you posted, and plan to watch it again and use it as my guide, perhaps this Saturday, to try and get it to run right.

Thanks!


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1/22/14 8:19pm - Reply: 'Re: Snow blower adjustment'
dyoes
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Zachary, LA - USA

Vette(s):
1974 L-48 Auto. Just your basic Vette. GM crate motor w/vortec heads and intake. Crane cam. Scorpion rockers, Edelbrock carb. Lots of parts still in boxes... :(

Joined: 1/27/2013
Posts: 201
What's this "snow" stuff you speak of...




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1/27/14 10:46am - Reply: 'Re: Snow blower adjustment'
Adam Wartell Lifetime Member
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Eagleville, PA - USA

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Used to own a 1979 Corvette now owned by JB79

Joined: 11/1/2001
Posts: 14705
I got to adjusting it this weekend. I couldn't seem to get it adjusted quite right. A guy who I know from Cub Scouts happen to be driving by my house when I was working on it, and he stopped to say hi.  He has experience with these engines and carbs, so he offered to help.  He got it running pretty good for me. I was able to use it for a snowfall we had Saturday. It was a light snowfall, though. I'll be interested to see how it performs for a heavy snowfall.

Thanks for the help guys!


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-Adam Wartell
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1/27/14 12:52pm - Reply: 'Re: Snow blower adjustment'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

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#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

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Adam...check THIS out....it will solve all your snow blower problems....guaranteed....Wink

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1/27/14 12:54pm - Reply: 'Re: Snow blower adjustment'
indy99
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Newport, MI - USA

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Adams' Apple said: Adam...check THIS out....it will solve all your snow blower problems....guaranteed....Wink


Only if it comes with a free slave.


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1/27/14 12:57pm - Reply: 'Re: Snow blower adjustment'
Adam Wartell Lifetime Member
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Eagleville, PA - USA

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Used to own a 1979 Corvette now owned by JB79

Joined: 11/1/2001
Posts: 14705
indy99 said:
Adams' Apple said: Adam...check THIS out....it will solve all your snow blower problems....guaranteed....Wink


Only if it comes with a free slave.


Not when I have herniated discs and am not supposed to shovel.  So, Tongue

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-Adam Wartell
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Founder:
C3 Vette Registry (Join C3VR on facebook)
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1/28/14 8:47am - Reply: 'Re: Snow blower adjustment'
Sarge81 Lifetime Member
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WEST SENECA, NY - USA

Vette(s):
1981 Blue Ice Met. w/pearl ghost flames TKO500 5speed. LS1 Swap 3.45 Dana 44.

Joined: 12/3/2001
Posts: 2376
Adam Wartell said: I got to adjusting it this weekend. I couldn't seem to get it adjusted quite right. A guy who I know from Cub Scouts happen to be driving by my house when I was working on it, and he stopped to say hi.  He has experience with these engines and carbs, so he offered to help.  He got it running pretty good for me. I was able to use it for a snowfall we had Saturday. It was a light snowfall, though. I'll be interested to see how it performs for a heavy snowfall.

Thanks for the help guys!


Cool!!! Thumbs Up

My 13hp Ariens has been getting a lot of use this season. Since my back is shot, I only shovel the light fluffy stuff and the front porch. 


____________________________________

GEN III 5.7L "LS6" Engine swap
TKO500 5 spd.
3.54 Dana 44
'69 "N11" Sidepipes
Borgeson Steering Box
Born 8/1981
Sequence #3975




Click here to see more pics of my Vette on CarDomain.


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1/28/14 5:11pm - Reply: 'Re: Snow blower adjustment'
tb2k82ce Lifetime Member
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Lemon Grove, CA - USA

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1982 C3 Collectors Edition 44000 miles, sat in the sun most of it's life, My wife purchased it for me for fathers day in 2007 from her girl friend that had it for 19 years. It is on the road again. I'm retired but it is now my daily driver.

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Posts: 2007
Adam that is just mean spirited.  I do agree and almost fell out Beerof my chair laughing.

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