724 38050 1978 running problem - Snowblower Forum : Snow Blower Forums
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post #1 of 29 Old 01-25-2015, 04:23 PM Thread Starter
Tex
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724 38050 1978 running problem

Hello all - I posted a note on the other thread (unknown snowblower age - new to forum) saying i was starting this thread to get some help (all the help on the other thread was great in helping me). What i have now is that the snowblower started, ran while using the drive wheels, and while using the blower, for about ten feet and then died. now the engine starts and runs, but dies out after about ten seconds, like out of gas. repush primer, close choke, pull start, runs then dies. thinking that i need to get rebuild kit for carb - any suggestion? I took some photos (as suggested in other thread) but need to know how to get them on the forum in this thread.

724 toro m/n 38050 s/n 8006021
tec eng h70-130176d s/n 72790
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post #2 of 29 Old 01-25-2015, 04:30 PM
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I would crawl up in that whole fuel system. to see what is going on. might be a float or just a carb rebuild. see the paper clip up top of this thing. you can take pics off of your system. some one else can explain it better than me.

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post #3 of 29 Old 01-25-2015, 05:09 PM
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+1

It seems as though carb rebuild, new fuel lines, fuel filter, shutoff is almost always needed when buying used equipment.

I use photobucket for sharing pictures. Open an account, create a library for your 724 pics, drop photos into the library, copy the text in the "IMG" field and paste it into this field


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post #4 of 29 Old 01-25-2015, 06:40 PM
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Hello Tex. Try loosening the gas cap and see if it continues to run. You may have a clogged vent in the cap and preventing fuel flow.

Toro 8/24 (38080) 1989
Toro 721-QZR (38743) 2015 (Hemi Predator Power)

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post #5 of 29 Old 01-26-2015, 08:36 AM
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Put a Predator 212 on it. They are less than $100 right now. It will be a much better machine.
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post #6 of 29 Old 01-26-2015, 12:59 PM Thread Starter
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I will be getting a carb rebuild kit, primer hose (this one is hard and has kink that won't come out), and gas cap filler (or gas cap) since this looks saturated. Checked flow through to carb (with bowl off) to check hoses and shutoff valve, and had full flow - so thanks for the recommendations. As to a "Predator 212", I don't know what that is (carb or engine I assume) since I never heard that name. I looked for a "paper clip" (assuming this is how to attach pictures) but did not see it anywhere. I have the pictures on my computer now (had problems uploading to Photobucket from cell phone so put on computer) so I will upload them to this thread, if I can find out how to do that.

724 toro m/n 38050 s/n 8006021
tec eng h70-130176d s/n 72790
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post #7 of 29 Old 01-26-2015, 01:07 PM Thread Starter
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Forgot to ask another question in last posting - when the snow was coming out of the chute (for the little bit of running time at full throttle with wheels in forward position 2), it was only thrown about 3 feet from machine - what do I need to check to increase the throwing distance?

724 toro m/n 38050 s/n 8006021
tec eng h70-130176d s/n 72790
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post #8 of 29 Old 01-26-2015, 01:28 PM
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The predator that pcf is referring to is an overhead valve engine from Harbor Freight. It can be a contentious topic mainly due to the political nature (stolen technology, chinese "labor laws", patriotism, etc.) however guys have been having great success repowering with them despite their low cost.

Unless there's a hole in the side of your block and/or the cylinder bore is hosed, stay the course and resolve the fuel delivery issues. Get it running and see how it performs. Kinked primer line can be a big deal if you don't have a dedicated vent hole on the side of the carb; it would mean that you'd create a vacuum in the carb bowl which needs to stay at atmospheric pressure.

What part of photobucket is giving you trouble?


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post #9 of 29 Old 01-26-2015, 01:58 PM
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See this thread regarding installation of a Predator 212 on a Toro 724: https://www.snowblowerforum.com/#/for...4/topics/18921

It will make a large improvement in performance, throwing snow 20+ feet with ease. Much easier to start as well.

Last edited by pcfithian; 01-26-2015 at 07:24 PM.
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post #10 of 29 Old 01-26-2015, 04:51 PM
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Probably not it, but the engine on my 826 dies if I don't press on one of the switches on the handles whenever the auger is engaged (the ones that look like brake levers on a bike).

It's a safety feature that cuts spark if not pressed down... because that auger is deemed dangerous, it would seem!



Last edited by 762mm; 01-26-2015 at 04:54 PM.
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