Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) Discussions

Hello I hope one of the experts can help me. We have a Toro snowblower 7/24 Model 38050 that we bought new back in 1981 I believe. It has been a work horse all these years and almost problem free until now. It leaks gas from the carb BUT I can stop the leak by using the shut off valve.

 I did the following: I replaced  the inlet needle - seat- clip and clip, float and also a new gasket around the bowl. Well it still LEAKS gas.

 I gave up on it for now and just wondering if anyone has any ideas. Maybe I installed the new seat in wrong? I made sure it went up all the way is that right? I cannot see anything else that would cause  this problem unless I have the wrong parts in??? I used a kit 631920 for the inlet assmb'ly.  Anytthoughts would be most helpful, I still can use it but will have to use the shutoff after I finish each time.

Ray

Perhaps you installed the bowl the wrong way and your float  won't let the darn thing seal.

GOOD LUCK ALLAN,

Thanks Fred, I checked the bowl and it is fine but I think Allan may have hit it right with the bowl being on wrong. It was very cold and windy and I may not have checked to see if the bowl was reinstalled correctly. 

I wll check it again come morning (and they snow is on the way) and let you know if the bowl is installed wrong. A quick fix if  it is.

Thanks again!!
Ray

Ray - did you set the float level & if so, what measurement did you use? The "seat" should be installed with the smooth side going up into the carb body, and the "rings" on the other side of the seat should be visible if you look up where it sits in the seat cavity.

Marty

Once again thank you all for trying to help! Okay it did snow this morning after all (why not) I checked everything again and (1) The bowl is installed with the step down portion towards the float end (front of blower) (2)  Re: Marty's help: The seat was with the smooth side down so I reinstalled so that the "rings" are visible when you look up ijn the seat cavity.  And it still is leaking, like the float is not pushing the needle to close the gas flow??? One thing I did have a problem with is that "clip" from what I see it only goes on one way and attaches to the new float I have.  As far as the float level, I left it the same as it was the first 2 times BUT then did turn the screw both ways to see if that would help and it did not.  What measurement should the level be? 

Unless I somehow damgaed that "seat" by taking out and reinstalling I am lost  with what is wrong. I have a new, needle, clip, float and seat. The bowl is not leaking as the gas comes out of the gasket area and also the choke area if I don't use the shut off. So this does tell me it is a float problem??? I gave up for today , and will order another kit and try again this week, before the new snow storm next week. 

Ray

Ray - the float setting is not achieved with a screw. I think the one you are turning is a mixture screw. To adjust the float properly, the carb must be removed & turned upside down. Then you put an 11/64" drill bit on the opposite side of the float hinge, between the upper bowl area where the gasket is & the float itself . The top of the float should just touch the drill bit for the proper setting. I think thats your problem.

Marty

Thanks Marty, that makes alot of sense. I did put the mixture screw back to where it was and it does run normal,  just that leak problem that I use the shut off to stop.

I would think that the "seat" does not go all the way up but is the part that gets moved (up or down" to make the proper float adjustment, am I understanding you correctly? Also because this is a 25 year old machine I am concerned about breaking a bolt  to take the carb off. 

The local shop wants 40.00 Pick up & re-delivery and then he also said about 75-100 to reapair the leak. That does not count a carb if needed because of the machine age.  This is why I decided to do it myself, and I did take the bowl off about 6 years ago when sediment caused blockage, fixed it and it did not leak and work until this problem.

The other concern was that  clip. it seems to come off to easily.

Ray

Just some quick suggestions if this a tecumseh engine. First, make sure the carb is clean. The seat described here, is put in wrong. Rings must be faced down first, and smoothside is for the inlet needle.Check float even if new, for leaks, adjust  float with a 11/64 inch drill bit.Put spring on with the pointed end towards the choke, yes, it's suppose to be lose.Float bowl cutout, should be on the inside towards the engine parallel with the float post . this makes sure that the float is able to drop in the bowl far enough to allow the fuel  to enter the carb. Make sure the bowl is vented , if plugged , this will cause the carb to flood. Was there any water in the carb and froze? if so you may have a small hair line crack somewhere causing the leak. It's usually and easy fix, keep working at it you'll get it working right.I hope this helps .

                                                                                                                                                                                                             Happy fixing from, snowballdgs

Thanks to ALL for trying to help me with this leak problem!!!!  I gave up until it gets warmer, I did try to adjust the float with a 11/64 drill bit as explained (thank you) but must be off a little yet as it still leaks, I can use it but have to use the shut off.  I don't want to attempt to take the carb off as after 25 years I am concerned about snapping a bolt, so I have been trying to adjust with the carb on. I know not a good idea!!!  When it gets warmer and I can get some help I will try again,  BUT at least I know what is wrong!!  I checked the price on a new one a 8/26 and it goes for 999.99.......will get this one fixed!!!

Best to all and THANK YOU.

Ray

Ray

I find it hard to believe you'll snap the bolts.They aren't as tight as you may think. Use the proper fitting tools and you'll be amazed how easy that comes loose.

Good luck,Allan

Marty ,

In my Tecumseh manual  it says that the ring side of the seat should be up into the carb and the smooth side is where the needle seats . Page 26  figure 29  manual 692509 ? Majorxlr8n wrote: