Abby’s Guide > Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) > Discussions > MTD TECUMSEH 80-110 ENGINE
Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) Discussions |
|
BudHtown
Joined: Jul 23, 2010
Points: 9
|
|
MTD TECUMSEH 80-110 ENGINE
Original Message Jul 23, 2010 11:27 am |
|
I just recently purchased a MTD Snowblower with 8hp Tecumseh Engine on it, for $200.00 off of Craigs List. It was running fine until I put it up on its casining to chech for it being lubed on it's drive gear. Since then it starts up but will also stall out when I switch it off from full choke, 1/2 choke, then to no choke. It then will not start even with using the electric starter. I have been online and have read alot of forums on the Tecumseh motors and have found this one to be the best. ( Richie ) your comment being the first one I had read on adjusting the RPM'S on your engine. I had in other forums have heard of these motors have a common problem of staring issues. Mostly directed towords the carburator. My brother has the same HP Tecumseh on his Snowblower and it starts from year to year with out running any Sta-bil in it before parking it in his garage for the next 10 months!!! Can anyone give me any direction on my next step. Here is some additional info. 2003 on owners manual, Spec- 155693X HMSK 80, D.O.M. 03325CH0708 Thanks, Bud
|
BudHtown
Joined: Jul 23, 2010
Points: 9
|
|
Re: MTD TECUMSEH 80-110 ENGINE
Reply #10 Nov 8, 2010 9:20 am |
|
I'll have to pull the carb off then. I will try to follow your instructions on the adjustment of the float and the others that you had mentioned. I'm pretty mechanically inclined but have never fooled with adjustments on a carb. , other than for idle, but will give it a whirl. It's one of those things to see and have some explain what they are talking about. Then reading something and understand exactly if you are doing it right or not......ya know. I've looked into carbs for this thing if I have to go down that path. They are around 80.00. Does that sound about right?? It just drives me crazy that my brother has no problems with his and does not do any preventive maintinece on his and his starts right up, and with no problems! He does change the spark plug though. So, I'll take off the carb tomorrow and see what happens. I have off tomorrow and Wednesday. Thanks again trouts2!!! Bud
|
trouts2
Location: Marlboro MA
Joined: Dec 8, 2007
Points: 1328
|
|
Re: MTD TECUMSEH 80-110 ENGINE
Reply #11 Nov 8, 2010 1:08 pm |
|
There are some things listed above you could do before pulling the carb which could eliminate the need to pull it.
The adjustments and steps above probably seem complicated because you are not familiar with the carb but they are actually pretty easy. Backing out a screw 1 ½ turns is not difficult or cause you to skin your knuckles. Watching a needle drop with lowering the float won’t make you throw up.
Your carb may or may not have the low idle adjust as a settable screw versus a screwed in jet with no adjustment.
Your carb goes for approx 60-80. Suppliers may have the original or a replacement. The replacement may not have settable jets. It would probably be better to have your original carb working than a non-settable replacement.
Your brothers not doing maintenance on the engine and having it start and run next season is a matter of luck. It depends on how much gas was in the tank at storage, if there is a shutoff, temperature of the storage place, ventilation, moisture & etc. Some conditions will cause a carb to gum up quickly and others not. Just say a person left a half a tank of gas, did not have a shutoff and left it in a small shed in the sun. Chances are high the gas in the bowl will evaporate quickly and be refilled over and over leaving a heavy brown gum inside. Another person could leave a half a tank of gas in, shutoff the valve and store it in a shed under a tree. He might end up with a very thin gray/green film which will not cause a problem. The gas could even stay good and fire up the next year with no problem. It would probably take several years before the buildup became a problem. There are lots of factors to just how varnish builds
|
BudHtown
Joined: Jul 23, 2010
Points: 9
|
|
Re: MTD TECUMSEH 80-110 ENGINE
Reply #13 Nov 9, 2010 12:57 pm |
|
Well trout2 I just went out and started it up with the old plug still in. It started right up. I could hear it was running a little ruff so I shut it down and put the new one in. and it kicked off right away. I ran it for 15 mins and then shut it off and went back inside for about 20 mins., - came out and it started right up again. I ran it actually til it ran out of gas - thought there was more in it. - put some in it, and it fired right off. What I did do was loosen up the gas cap. It was on pretty tight. I had seen you mention about that, but never heard of over tightning a gas cap would cause a engine to stall out. But, I noticed on my lawn mower there is a hole in the top of the cap and not one one the snowblower. When I go back home I'm going to start it againg and see what happens. I'm going to take off the bowl, and see if there is any dirt in the bottom of it. By the way, I did purchase a repair manual for it when I started to have the problems. According to my serial # I have a 644E model. With the illistrations, I believe it has series 3-4 carb on it. Do you think I should pull the gas tank off and blow it out and also the line to the carb to make there is no dirt in either of them?? Thanks bud for all the feedback!!! Bud
|
trouts2
Location: Marlboro MA
Joined: Dec 8, 2007
Points: 1328
|
|
Re: MTD TECUMSEH 80-110 ENGINE
Reply #14 Nov 9, 2010 1:49 pm |
|
Gas caps come with holes. The tank needs a vent so it will not develop a vacuum and stop gas flow to the carb. Take off the gas cap and look at the inside. Depending on the cap you’ll see there is a way for air to get in. From your first descriptions it seemed you could start but only run for some amount of seconds but under a minute. Now you are running for a long time before crap out, 15-20 minutes. Running for a short time and stalling is indicative of a few problems mentioned above in a prior post. It’s possible that the condition has cleared and now you are hitting a second different issue. Stalling out like you are now could be from the cap being plugged. It’s also possible that you have the original problem but it occurs less frequently. Run it again with the cap off or loose and see what happens. Running with no load consumes only a little gas. You could get a better test by driving it around with the augers engaged to use more. If there’s a flow/gas problem or needle sticking it will happen sooner. If a gas cap vent problem that will happen also but still take a few to several minutes. You don’t have to remove the tank to get it clean. As mentioned above you can remove the gas line at the carb and empty the tank gas into a container. Pour the gas back into the tank and drain it through again. Look into the container to see what comes out. It should be clear gas and easy to see the bottom of the container. If clouded whitish there water in the gas. Read above again about draining the bowl. I buy lots of second hand machines and it’s very rare to get a machine that does not have some sort of carb problem. There’s lots of reading on the net and many good postings on this forum about carb problems. A 664E is probably a 26 inch. If in decent shape $200 is OK good price. That model is fairly easy to fix so you should be able to keep it running for as many years as you want. Clear your area of any branches, stones or whatever could get caught in the augers and it will last many years.
|
BudHtown
Joined: Jul 23, 2010
Points: 9
|
|
Re: MTD TECUMSEH 80-110 ENGINE
Reply #15 Nov 10, 2010 11:18 am |
|
trout2, Mine is 24" width. I figured that 200.00 was a good price for it. I figured I would get many years of use out of it. My brother has the same make and he bought his in 96' or so. Mine is 2004 according to the serial #. I went home again and checked the cap and there is not visible hole on the top of it. I loosened it up again it ran fine until it ran out of gas. This time I ran it around the yard with the auger engaged until it ran out of gas. I put more in it and it started right up and continued to run until I shut it down. It has never ran this good with out stalling out. Now should I drill a small hole ( 1/8" ) in the cap and then put it on and tighten it, to see if it will still run? I do plan on ordering a new one for it anyway. I fugure, this way, I know this cap is deffinately vened and should not create the vacum. Hell, if I keep running it I'll soon need to change the oil again! By the way, would you use a synthetic oil, and if so, would you still change it after each season??? I'm going out to try running it again - will let you know what happens Thanks, Bud
|
BudHtown
Joined: Jul 23, 2010
Points: 9
|
|
Re: MTD TECUMSEH 80-110 ENGINE
Reply #17 Nov 11, 2010 9:28 am |
|
trout2, I ran it all day yesterday and it didn't stall out and not start up again, not once! I rechecked the cap and found no hole anywhere to be found. I called my brother and his 8hp has no hole in it either. I asked him - how tight does he put his on ann he said, just till it stops. So, I may have been over - tighting mine. It said, no where in not the manul or the repair manual - not too over tighten it. I now think sometime there was dirt blocking the needle valve and causing the one running problem. Given now that I've run it and restarted it many times, and will, on and off to make sure of that. I'm not going to fool with anything for now. The way I ran it around the yard, if it was going to stall out it. It would have. If I do then I'll fool with the carb again. I'll let you know if I have any problems in the next couple of weeks. Thanks Bud for all your HELP! Bud
|
bus708
Location: Maryland
Joined: Jul 24, 2010
Points: 321
|
|
Re: MTD TECUMSEH 80-110 ENGINE
Reply #18 Nov 11, 2010 10:28 am |
|
I miss the old Tecumseh finger pushbutton fuel bowl drain..... Anybody else misss those too? -Friiy If you run fresh clean gas with stabilizer you don't need to drain it. I never mess with my drain valve or any other carb adjustment. the more you mess with it the more potential problems you have. My Techumseh is 12 years old and never gave me any problems. I maintain it properly. Read my posts # 3 here, and follow my preventive maintance , you too will not have any problems
This message was modified Nov 11, 2010 by bus708
|
|
|