Abby’s Guide > Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) > Discussions > Airens ST1032 Snowblower. Need advice.
Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) Discussions |
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dvdkea
Joined: Mar 17, 2010
Points: 28
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Airens ST1032 Snowblower. Need advice.
Original Message Mar 17, 2010 9:18 pm |
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I recently picked up a Airens ST1032 snowblower. It is in good shape but, when I bought it it was taken apart. The previous owner said it did not have any spark. I replaced the points and condenser and I also removed the cylinder head cover to check the condition of the piston and valves. They look good but i did notice a hair line crack in the cylinder head. (the part the spark plug screws into). It does not appear to go all the way through. I am in the process of putting the motor back together, but with the cylinder cracked, I am also considering getting a new motor all together. How do i know if the head is trashed? It does seem to have a decent amount of compression, but it hard to tell, because i dont know what "normal" is for that motor? It is a 10hp tecumseh HM100 motor Any advice?
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friiy
Location: Las Vegas, The Desert
Joined: Apr 12, 2008
Points: 600
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Re: Airens ST1032 Snowblower. Need advice.
Reply #5 Mar 18, 2010 7:42 pm |
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Those cracks may be just "Casting Marks"... if they were cracks, they would go (I think) all the way through with nothing to stop it. Also if they were cracks comming off the plug hole, The spark plug would expand them as it tightened up.. Remember what you said first... It has no spark... Put it back together and check your kill switch wiring and lockouts... Good Luck, Friiy
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dvdkea
Joined: Mar 17, 2010
Points: 28
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Re: Airens ST1032 Snowblower. Need advice.
Reply #6 Mar 18, 2010 8:59 pm |
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I got it back together tonight and it does have spark now. Replacing the points and condenser did the trick. Tomorrow morning I am going to see if i can get it running. I can get a replacement head for $30, so I may get one anyway. The cast iron gear box, is that in the front of the machine, up by the auger? If so, yes it is cast iron.
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dvdkea
Joined: Mar 17, 2010
Points: 28
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Re: Airens ST1032 Snowblower. Need advice.
Reply #8 Mar 19, 2010 8:21 pm |
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I got it running today, but it wont stay running. I soaked the carb for 2 days prior to today, got a carb rebuild kit, blew out all the carb with compressed air. It will run on full choke, but when i turn the choke off, it stalls. I spent a few hours today adjusting the carb, but no luck. I took the carb off of my st824 and (appears to be the same one) it started up and was running normal. So its definetly the carb. Any suggestions? I was looking at new ones....
This message was modified Mar 19, 2010 by dvdkea
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dvdkea
Joined: Mar 17, 2010
Points: 28
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Re: Airens ST1032 Snowblower. Need advice.
Reply #10 Mar 19, 2010 9:04 pm |
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Where can I get the diagram that show hows the carb comes apart? The motor is a hm100 159024D
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trouts2
Location: Marlboro MA
Joined: Dec 8, 2007
Points: 1328
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Re: Airens ST1032 Snowblower. Need advice.
Reply #11 Mar 19, 2010 9:33 pm |
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It's probably just some left over dregs and the carb will cleanup and be fine after another basic run through. I dip in two solutions for 24 hours, give it an ultrasonic bath, then wash with carb spray then compressed air. Occasionally it will act just like yours and it ends up some crud was missed. I re-do the basics below and it's usually enough to get it going properly. The chances of needing a new carb around about 200:1. http://outdoorpowerinfo.com/repairs/tecumseh_carb_632334a.asp Running a quart of gas through the tank out of the carb line to flush crud in the line that often causes problems. Catch gas in a white cup and look for crud. Often I'll run a half gallon through but still end up with bowl dregs after putting the carb back on. The dregs are usually bits from the gas line that get loose from handling and break off later. Spray through the carb inlet, both directions with the inlet line removed. Check the carb seat is ribbed side in and fully seated. Take the needle out of the bowl nut and spray in there. Clean both holes in the nut with a thin wire, i.e. stripped tie wrap. One is tiny and just above the bottom threads where the smooth area starts. Run a thin wire up into the main tube i.e. runs from the bottom of carb into the throat. Put slight bends in the tube so they just graze the tube inside. Stick the carb spray tube at the tube and spray up into it. Remove the choke butterfly and run a wire in the main jet air inlet at the base of the choke butterfly. At least stick the carb spray tube there and spray in. Check the float setting for 11/64 between rim and float with the carb turned upside down. Use a drill of that size laid across the bowl rim. The float should just touch the drill. Check if the needle is sticking on the seat by moving the float up and down a few time and watching the needle. It may stick lightly but pull off as you lower the bowl. Spray into the primer port and watch the flat on the outside of the carb just above the low idle adjust for a spray out of the air vent hole (tiny). Also spray in the base welch cutout by the main jet base and watch for a fluid out of the same hole. Remove the idle jet and spray in there.
This message was modified Mar 21, 2010 by trouts2
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friiy
Location: Las Vegas, The Desert
Joined: Apr 12, 2008
Points: 600
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Re: Airens ST1032 Snowblower. Need advice.
Reply #12 Mar 19, 2010 10:27 pm |
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dvdkea
Joined: Mar 17, 2010
Points: 28
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Re: Airens ST1032 Snowblower. Need advice.
Reply #13 Mar 21, 2010 8:00 am |
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I took the carb apart and soaked it again for 24 hours. I am going to blow out all the passages,, reasseble and give it try today. I will let you know how it goes. Thank you for all the help so far. I need to get a starter, and gas tank (I broke the tank when the pull start handle slipped out of my hand and smacked the side of the tank and put a nice hole in the it) The hole cold probably be fixed, but i am not sure what type of adheasive to use that will stand up to gasoline? Does anyone have a good source for a starter and tank? Part numbers?
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dvdkea
Joined: Mar 17, 2010
Points: 28
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Re: Airens ST1032 Snowblower. Need advice.
Reply #14 Mar 21, 2010 11:41 am |
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made a little progress.....if I prime the carb it will start and run with the choke off, but only for a few seconds. Not sure what the next steps are? Possibly float adjustment? Vacuum leak? One thing i noticed on the float bowl, it must have gotten a dent in it at some point, it was pushed back out, but not completely, could the float be getting caught up on the dent?
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trouts2
Location: Marlboro MA
Joined: Dec 8, 2007
Points: 1328
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Re: Airens ST1032 Snowblower. Need advice.
Reply #16 Mar 21, 2010 3:05 pm |
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You can get the Tecumseh factory number off the cowling and go to the link below for part numbers. It should be stamped on top. http://www.outdoordistributors.com/Tecumseh/Tecumsehpartslists.html Do you have pullback causing the handle to pull out of your hands? Timing.too advanced or gap too small causing an early fire? Did you just break the starter cord with all the pulling? A new cord can be strung pretty easily. For the cost of a new tank and recoil you could get a motor. There are plenty of glues around that will be ok with gas if the crack or hole is suitable for patching. Patching a tank is a bother. You can pickup a second hand tank To see if it will run you can start it and keep punching the primer to get gas to it. It seems like it still could have a block someplace. The bowl is stepped. The lower portion with the dimple goes away from the float hinge.
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dvdkea
Joined: Mar 17, 2010
Points: 28
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Re: Airens ST1032 Snowblower. Need advice.
Reply #17 Mar 21, 2010 4:41 pm |
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I took the carb off of my other snowblower (st824) and swapped it, and it runs fine with no other adjustments. I went through the original one twice and have speant many hours playing with it, I think its time to get a new carb and be done with it. They seem to go for about $100. The pull cord and recoil are ok, the handle slipped out of my hand once,and broke the tank.
This message was modified Mar 21, 2010 by dvdkea
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borat
Joined: Nov 10, 2007
Points: 2692
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Re: Airens ST1032 Snowblower. Need advice.
Reply #18 Mar 21, 2010 5:15 pm |
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I took the carb off of my other snowblower (st824) and swapped it, and it runs fine with no other adjustments. I went through the original one twice and have speant many hours playing with it, I think its time to get a new carb and be done with it. They seem to go for about $100. The pull cord and recoil are ok, the handle slipped out of my hand once,and broke the tank. Have you completely dis-assembled the carb down to it's basic components? I.e. pulled and cleaned the jets, run wire and blown compressed air through the galleries, set float to spec, checked for manifold air leaks? I've worked on a lot of carburetors for over 35 years and have never come across one yet that I couldn't fix. Sure, might have taken a while to get it right but that was usually caused by being in too much of a hurry on the first or second go around.
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dvdkea
Joined: Mar 17, 2010
Points: 28
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Re: Airens ST1032 Snowblower. Need advice.
Reply #19 Mar 21, 2010 5:38 pm |
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I did take the carb completly apart. Removed the jet, remover the chocke butterfly, and throttle butterfly, everything was apart, soaked it, and blew out all the passages, etc. Something i did notice. The choke butterfly is bent. it appears to have been slightly beant so it would open and close. I did try to straighten it, got it flat, and the choke would not operate. Could the beant choke butterfly be causing this issue?
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trouts2
Location: Marlboro MA
Joined: Dec 8, 2007
Points: 1328
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Re: Airens ST1032 Snowblower. Need advice.
Reply #22 Mar 21, 2010 6:39 pm |
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If you can keep it running well for a while on primer then your gas line, float, needle are probably ok and no vacuum leak. The float is working but the level could be off. Your main jet needle should look like the one on that website i.e. the tip cut off. 7's and below had the pointed tip. 8's and above cut off. You could try the nut and jet from the good working carb. Some carbs are wicked fussy about the float level. They are basically the same so I think it’s do to the way the machine sits. Some ST824s sit level, some droop towards the handlebars and some a bit forward. You seem starved so you could squeeze the float tab a hair to see if that helps. If you can run for a short period (no prime) then it stops then let it sit for a while and it starts and runs for a short period again then it’s probably the float level. Are your carb linkages opening the throttle plate when you put it on full throttle? You could open the choke butterfly and look in to be sure. 1 turn on the idle and 1 ½ on the main jet are enough to get a carb to run so don’t bother with trying any adjustments until fine tuning after you locate whatever the problem is. Seems like crud or a float adjustment.
This message was modified Mar 25, 2010 by trouts2
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dvdkea
Joined: Mar 17, 2010
Points: 28
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Re: Airens ST1032 Snowblower. Need advice.
Reply #23 Mar 21, 2010 7:39 pm |
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It is a new plastic float, the one that was originally in there was brass. The main needle jet does have the tip cut off, so it appears to be the correct one and is identical to the one that was in the carb before rebuild. in this case, when adjusting the float level, i want to allow more fuel into the bowl, correct? The carb linkages do open the throttle part way when the lever is at "fast" I was under the impression that this was normal, and the govenor would open the throttle more when needed. Is that correct? I did install a inline fuel filter, could that be causing problems? but, then again, the carb from the st824 works fine with it.....
This message was modified Mar 21, 2010 by dvdkea
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trouts2
Location: Marlboro MA
Joined: Dec 8, 2007
Points: 1328
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Re: Airens ST1032 Snowblower. Need advice.
Reply #25 Mar 21, 2010 9:03 pm |
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Never used a plastic float. I don’t know if they ride different or are set the same way. You can ballpark it by setting similar to the brass float then subtracting a hair from the tang to open slightly early. >>The carb linkages do open the throttle part way when the lever is at "fast" I was under >>the impression that this was normal, and the govenor would open the throttle more >>when needed. Is that correct? Yes, the linkage throttle movement is a gross movement so it’s probably fine. The governor is generally active at slowing down the motor (pushed internally by flyweights) or passivly being pulled back by throttle springs. >>I did install a inline fuel filter, could that be causing problems? but, then again, the carb from the st824 works fine with it..... Also, draining fuel out of the nut will double check that Remember, you just cleaned your carb and having problems which act like the carb is dirty. You might want to check things again because it looks like some area you cleaned or set right is now dirty or set incorrectly. It won’t need another dip but poking the passageways and verifying the float will probably cure it. Every time you put the gas line back on you are pushing hard on an old line that can easily break off crud immediatly or loosen the wall which will fall off later. Chances are the line did not come off easily and you had to use pliers or wedge a screw drive behind the line to get it off. That puts a lot of stress on an old line.
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borat
Joined: Nov 10, 2007
Points: 2692
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Re: Airens ST1032 Snowblower. Need advice.
Reply #28 Mar 22, 2010 1:26 pm |
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I give up. I adjusted the float several times with no difference in the way it runs. I ordered a new carb today. See if Trouts wants your old carb to find out if he can analyze the problem. He might be able to press it into service on a machine he's repairing. I hate giving in to a misbehaving carb! I hope you looked on Ebay before ordering in the new carb. Big savings to be had there on stuff like that.
This message was modified Mar 22, 2010 by borat
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dvdkea
Joined: Mar 17, 2010
Points: 28
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Re: Airens ST1032 Snowblower. Need advice.
Reply #29 Mar 22, 2010 4:37 pm |
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I may just throw it up on ebay to get rid of it. I'm sure it can be fixed, but i just dont have the patients anymore. They new ones are available on ebay for about $10 less than i can buy locally. I'll buy local. I have learned a lot about the st1032 already. Seems like it will be a good machine. I live in upstate NY and we had a very mild winter, but I'm sure we will get a lot of snow one of therse years... Any idea what a machine of that size\quality would go for today?
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dvdkea
Joined: Mar 17, 2010
Points: 28
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Re: Airens ST1032 Snowblower. Need advice.
Reply #31 Mar 23, 2010 1:23 pm |
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I was able to get a NOS carb locally that does have all of the adjustments like the original one does. I am assuming these are better than the non adjustable ones?
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