You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an alternative browser.
You should upgrade or use an alternative browser.
Export thread
Primer issue
#1
C
Cfs
C
Cfs
Primer/carb question
I am working on an old Ariens lawn mower model 911014 with a Tecumseh TVS120 63096F engine. Customer brought it to me with a broken remote mounted primer. Snaps into the blower housing (2 legs and a center fitting the hose gos to) Like the ones you see on snowblowers. I put a replacement generic primer that fit and it would not run for more than 3-5 seconds. Figured out that if I plug the hole in the center of the primer that it would continue to run. Seems like the primer bulb begins to expand while running with the plug in it. Must be pressure that is venting back from the carb. Is there a different model of primer that I need one with a check valve built into it? Is there an internal vent in the carb that is blocked? I have checked the fuel drained and refilled it after flushing the gas tank, installed a new needle and seat. I was pulling my hair out until I thought that since the old primer was a solid rubber cover (no center hole) that I should try to block the hole in the new one and Shazam it will stay running
What do you recommend
Thanks
Spit
I am working on an old Ariens lawn mower model 911014 with a Tecumseh TVS120 63096F engine. Customer brought it to me with a broken remote mounted primer. Snaps into the blower housing (2 legs and a center fitting the hose gos to) Like the ones you see on snowblowers. I put a replacement generic primer that fit and it would not run for more than 3-5 seconds. Figured out that if I plug the hole in the center of the primer that it would continue to run. Seems like the primer bulb begins to expand while running with the plug in it. Must be pressure that is venting back from the carb. Is there a different model of primer that I need one with a check valve built into it? Is there an internal vent in the carb that is blocked? I have checked the fuel drained and refilled it after flushing the gas tank, installed a new needle and seat. I was pulling my hair out until I thought that since the old primer was a solid rubber cover (no center hole) that I should try to block the hole in the new one and Shazam it will stay running
What do you recommend
Thanks
Spit
#2
R
Rivets
R
Rivets
I’m getting confused, so can you provide us with a bit more info. Are you sure the engine has not been replaced? I’ve looked up the model number for your mower and cannot find your engine listed as an original engine. Second the engine you listed uses a carb with the primer mounted on the carb. Can you supply us with the serial number for both the engine and the mower.
#3
C
Cfs
I have downloaded an owners manual a parts list and a Service manual for the mower from Ariens website. It clearly shows an engine with a shroud mounted primer and references the model number that I see on the engine. I have just re-checked the everything that I did to the carb. New seat and needle etc all looks good:,,
C
Cfs
I’m getting confused, so can you provide us with a bit more info. Are you sure the engine has not been replaced? I’ve looked up the model number for your mower and cannot find your engine listed as an original engine. Second the engine you listed uses a carb with the primer mounted on the carb. Can you supply us with the serial number for both the engine and the mower.
The model & serial number for the Ariens mower is 911014 serial 024589. mower. The Tecumseh engine has theses numbers on shroud/blower housing TVS120 63086F. Serial 8302BI’m getting confused, so can you provide us with a bit more info. Are you sure the engine has not been replaced? I’ve looked up the model number for your mower and cannot find your engine listed as an original engine. Second the engine you listed uses a carb with the primer mounted on the carb. Can you supply us with the serial number for both the engine and the mower.
I have downloaded an owners manual a parts list and a Service manual for the mower from Ariens website. It clearly shows an engine with a shroud mounted primer and references the model number that I see on the engine. I have just re-checked the everything that I did to the carb. New seat and needle etc all looks good:,,
#4
C
Cfs
C
Cfs
The model & serial number for the Ariens mower is 911014 serial 024589. mower. The Tecumseh engine has theses numbers on shroud/blower housing TVS120 63086F. Serial 8302B
I have downloaded an owners manual a parts list and a Service manual for the mower from Ariens website. It clearly shows an engine with a shroud mounted primer and references the model number that I see on the engine. I have just re-checked the everything that I did to the carb. New seat and needle etc all looks good:,,there is definitely pressure in the primer hose going back to the primer from the carb. If I plug the hole in the center of the primer immediately after starting the mower it will continue to run, if not it will stop running in 3-5 seconds. The primer bulb seems to inflate when I plug the hole in it. if I unplug the hole the engine dies in a few seconds. Somehow air pressure is going backward away from carb to the primer. When I stop I the air flow by plugging it at the back primer I runs….Maybe a leaking intake valve allowing a back pressure to get in to the carb preventing gas from getting into to the cylinder/combustion chamber??? I am for confused as hell
#5
C
Cfs
Chuck
C
Cfs
My fat fingers It is a TVS120- 63096F not 86. Could there be some kind of an oil breather that is not venting pressure this seems to have the Tecumseh type breather not the Briggs style that bolts on over the valvesThe model & serial number for the Ariens mower is 911014 serial 024589. mower. The Tecumseh engine has theses numbers on shroud/blower housing TVS120 63086F. Serial 8302B
I have downloaded an owners manual a parts list and a Service manual for the mower from Ariens website. It clearly shows an engine with a shroud mounted primer and references the model number that I see on the engine. I have just re-checked the everything that I did to the carb. New seat and needle etc all looks good:,,
Chuck
#6
R
Rivets
R
Rivets
When I look up your engine this is the carb it calls for. https://www.partstree.com/parts/tecumseh-632046a. This carb is what is called an internally vented primer system. From your description you also have an internally vented system, but using a remote primer. I’ve looked everywhere and I can’t find this primer bulb. I’ve looked at the Ariens manual and they don’t make any mention of it. Is this bulb mounted on the tank or on the engine shroud? Plugging the vent hole is going to get tricky, as you don’t want to use anything which may eat the rubber. Only thing that might work is a silicone or latex caulk. I’m going to keep looking around but I’m hoping IL, StarTech or Bert will see this thread and chime in to tell me what I’m missing.
#7
C
Cfs
C
Cfs
It is the original engine, the Ariens owners manual I downloaded clearly shows the remote primer mounted on to the engine shroud. The casting of the carb body has the location for a carb mounted primer but it does not appear to be drilled with the passages necessary for a carb mounted bulb.
I used a piece of Tygon tubing to run from the new primer to the carb, twice now after running the engine with the primer hole plugged and shutting it off...when I went to restart it I found that the tygon tubing had split and detached itself from the plastic bayonet fitting on the primer.
It makes me all the more certain that pressure from the engine is somehow venting itself through the carb and out of the Vent fitting that the primer tube attaches to. . When I don't plug the primer this reverse pressure is shutting the engine down by preventing the fuel to flow into the intake. when I pug the hole the flow out of the primer line is stopped, the engine keeps running but pressure builds up in the primer line and causes the hose to split.
Since the carb is only connected to the intake I am assuming that the intake valve must not be seating/sealing completely and on compression stroke some of the exhaust is venting back through the carb and out the vent that the primer line attaches to. Make sense to anyone?
I am trying to process what I am experiencing and this is all that makes sense to me...surely someone else has had a similar experience... Hoping somebody can confirm my conclusions or straighten me out
Thanks CFS
I used a piece of Tygon tubing to run from the new primer to the carb, twice now after running the engine with the primer hole plugged and shutting it off...when I went to restart it I found that the tygon tubing had split and detached itself from the plastic bayonet fitting on the primer.
It makes me all the more certain that pressure from the engine is somehow venting itself through the carb and out of the Vent fitting that the primer tube attaches to. . When I don't plug the primer this reverse pressure is shutting the engine down by preventing the fuel to flow into the intake. when I pug the hole the flow out of the primer line is stopped, the engine keeps running but pressure builds up in the primer line and causes the hose to split.
Since the carb is only connected to the intake I am assuming that the intake valve must not be seating/sealing completely and on compression stroke some of the exhaust is venting back through the carb and out the vent that the primer line attaches to. Make sense to anyone?
I am trying to process what I am experiencing and this is all that makes sense to me...surely someone else has had a similar experience... Hoping somebody can confirm my conclusions or straighten me out
Thanks CFS
#8
R
Rivets
R
Rivets
This is something I’ve never heard of before. To me I’d like to figure this out or learn from someone who has seen this. Part that really confuses me is I can’t ever recall a Tecumseh carb internally vented with a remote primer. Can you take some pictures of what you are talking about, so we all can see what you have? Use low resolution settings so they aren’t too large to post.
#9
V
VegetiveSteam
V
VegetiveSteam
Did the customer say if the engine was running fine before the remote primer got broken? Has it been sitting around for quite a while broken or were they recently using it and broke the primer?Primer/carb question
I am working on an old Ariens lawn mower model 911014 with a Tecumseh TVS120 63096F engine. Customer brought it to me with a broken remote mounted primer.
#10
StarTech
StarTech
I am too confused as all the model/spec listed in the parts IPL are carburetor with primers and no indication of a remote primer on those engines IPLs.
Can the OP post the MFG code from the current carb. Maybe I can cross it to the Tecumseh carb PN and then pull it up to cross to engines that used it.
Can the OP post the MFG code from the current carb. Maybe I can cross it to the Tecumseh carb PN and then pull it up to cross to engines that used it.
#11
C
Cfs
C
Cfs
I am unable to upload photos ‘essage says my files are too big. The original primer was black and did not have a center hole in the top of it. I see that the Tecumseh used a black primer that did not have a hole in it part number 34814 superseded to 35769. Does anyone know if it incorporated a check valve of any type. I have verified that the 911 series Ariens used a 5HP Tecumseh engine that had a remote primer. Maybe I can e-mail the photos to someone who can post them for all to see.
#13
R
Rivets
R
Rivets
Now I’m event more confused. If you have the correct part number, why did you replace an internally vented primer bulb with an externally vented primer? I’ve found this manual which discusses how internally vented primers work on page 8.
#14
V
VegetiveSteam
And again, was it running fine before the broken primer? If not then you could easily have two different issues.
V
VegetiveSteam
Getting the correct primer and go from there is what I would do. If the original had no hole then you need one with no hole. They aren't interchangeable. You could be chasing an issue that wouldn't be an issue with the correct part. Can I say the correct part will fix it? Of course not. Just saying that would be my next step. Now the next issue would be, is the correct part still available?What do you recommend
Thanks
Spit
And again, was it running fine before the broken primer? If not then you could easily have two different issues.
#15
C
Cfs
carb. I got the engine running and quickly disconnected the primer from the tubing and while pinching the tubing closed I hooked up a small balloon. I was fully expecting the balloon to fill-up… but it actually seemed to pull what little air that was in the balloon out. As soon as I removed the balloon the engine stalled out. Is there another vent in the carb that is possibly blocked? Can anyone tell me where to look for a vent?
C
Cfs
I am a work in progress… it turns out that. It is not positive pressure blowing out of the carb up into the primer… it is in fact vacuum. Negative pressure is drawing air into the carb through the hole in the primer back to the fitting on theThis is something I’ve never heard of before. To me I’d like to figure this out or learn from someone who has seen this. Part that really confuses me is I can’t ever recall a Tecumseh carb internally vented with a remote primer. Can you take some pictures of what you are talking about, so we all can see what you have? Use low resolution settings so they aren’t too large to post.
carb. I got the engine running and quickly disconnected the primer from the tubing and while pinching the tubing closed I hooked up a small balloon. I was fully expecting the balloon to fill-up… but it actually seemed to pull what little air that was in the balloon out. As soon as I removed the balloon the engine stalled out. Is there another vent in the carb that is possibly blocked? Can anyone tell me where to look for a vent?
#16
C
Cfs
C
Cfs
I was will have to ask the customer. Thing is the guy who brought me the mower is the father of the guy and his wife that use the mower. I will see what I can find out and post it
#17
R
Rivets
R
Rivets
Forgot to include this manual. https://www.mymowerparts.com/pdf/Te...P-4-CYCLE-L-HEAD-FLAT-HEAD-ENGINES-692509.pdf. I’m starting to get the feeling that we are not getting the full picture from you. You came looking for information and help, but the info you provide us is incorrect, which you changed later or sketchy, you had the correct part number but never post it until later. You question our posts and keep repeating what you feel is the problem. I put in a couple hours trying to figure one out, but kept hitting road blocks because I didn’t have the info you have, plus I’m sure that Star has done the same thing. If you continue to want help please reread this entire thread, answer the questions which were asked and don’t assume that your thoughts about this problem are correct. My assumptions about what is wrong have changed each time you add a new piece of information, so to tell you the truth I’m back to square one, as I don’t know what parts of your posting are correct and what parts are wrong. I’ll agree that you have a Tecumseh engine with a remote primer bulb, but I question just about everything else.
#18
C
Cfs
C
Cfs
I have ordered the Tecunseh primer. I honestly thought that the ones I gave with a hole in them were replacements for all primers. I think the closed primer is going to fix it. Thanks to everyone who assisted me. I will report back when I have installed the part
CFS
CFS
#19
C
Cfs
C
Cfs
I did not identify a Tecumseh part number for a primer without a hole in it until late Sunday night searching Google. That is when I first saw and got a part number. I have always seen lots of Tecumseh Snow Kings with the red primers with a hole in the center in fact that is all that I have seen. I assumed incorrectly that the red w/Hole replaced all Tecumseh remote primers., I looked at the same illustrated parts list that you did for the model/serial number and no remote primer is identified. I apologize and realize that I started asking questions too soon without researching further. I will advise what the outcome is when I get the original style primer and install It.
Thanks again to everyone who took time to respond
Thanks again to everyone who took time to respond
#20
Law57
Law57
I don't know if this helps or not. I did run into a primer issue on an old Tecumseh engine. It would start on fluid - run great. One day I gave it 20 pumps and it started. Another time I gave it 5-6 pumps and held the primer in - depressed. It started cold but died when i removed my finger from the primer. I figured there must be a small hole in the primer so I ordered some new ones. The mower starts and runs fine now. It didn't like that air leak on a cold start.
As an aside - this is my favorite mower. I just use it for trimming - it's not really a work horse. But it's an old Weed Eater brand with an aluminum deck. So light. Just great for working around trees, propane tank, you name it. I always keep my eyes out for another. If one is good. Two is better. More than two you have to hide from your wife.
As an aside - this is my favorite mower. I just use it for trimming - it's not really a work horse. But it's an old Weed Eater brand with an aluminum deck. So light. Just great for working around trees, propane tank, you name it. I always keep my eyes out for another. If one is good. Two is better. More than two you have to hide from your wife.
#21
C
Cfs
Again I did not find a primer part number, for the primer that eventually fixed my problem until hearing from the members of this forum that what I was looking at right in front of me was something that they were questioning as unheard of... At that point I thought I should keep researching to find if there was another primer. Thanks to everybody who took their time to he!p me
CFS
C
Cfs
The Tecumseh Primer arrived today and I installed it and then he mower is running properly now. I never knew that the primer with a hole in it was not a sub for one without a hole in it. Thank you to everyone who offered me help. I am still scratching my head as to why the Tecumseh illustrated parts list does not show a remote primer for the model engine which is the original engine per the Ariens owners manual. Very strange andForgot to include this manual. https://www.mymowerparts.com/pdf/Te...P-4-CYCLE-L-HEAD-FLAT-HEAD-ENGINES-692509.pdf. I’m starting to get the feeling that we are not getting the full picture from you. You came looking for information and help, but the info you provide us is incorrect, which you changed later or sketchy, you had the correct part number but never post it until later. You question our posts and keep repeating what you feel is the problem. I put in a couple hours trying to figure one out, but kept hitting road blocks because I didn’t have the info you have, plus I’m sure that Star has done the same thing. If you continue to want help please reread this entire thread, answer the questions which were asked and don’t assume that your thoughts about this problem are correct. My assumptions about what is wrong have changed each time you add a new piece of information, so to tell you the truth I’m back to square one, as I don’t know what parts of your posting are correct and what parts are wrong. I’ll agree that you have a Tecumseh engine with a remote primer bulb, but I question just about everything else.
Again I did not find a primer part number, for the primer that eventually fixed my problem until hearing from the members of this forum that what I was looking at right in front of me was something that they were questioning as unheard of... At that point I thought I should keep researching to find if there was another primer. Thanks to everybody who took their time to he!p me
CFS
#22
V
VegetiveSteam
V
VegetiveSteam
Thanks for letting us know it's up and running. It's nice to know an issue got solved.The Tecumseh Primer arrived today and I installed it and then he mower is running properly now. I never knew that the primer with a hole in it was not a sub for one without a hole in it. Thank you to everyone who offered me help. I am still scratching my head as to why the Tecumseh illustrated parts list does not show a remote primer for the model engine which is the original engine per the Ariens owners manual. Very strange and
Again I did not find a primer part number, for the primer that eventually fixed my problem until hearing from the members of this forum that what I was looking at right in front of me was something that they were questioning as unheard of... At that point I thought I should keep researching to find if there was another primer. Thanks to everybody who took their time to he!p me
CFS
#23
H
hlw49
H
hlw49
Parts IPL did not show a reference no. but the parts list did list it as reference no. 350. have seen this in various IPLs