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Snowblower Carb

FriboRage

FriboRage

New member
I dunno if anyone around here maybe knows a thing or two about this... It's an MTD 315-611D000 with a Tecumseh motor.

My dad left gas in his snow blower for a year or two, cause he got sick and stopped using it. I took the carb apart to rebuild it, got it all cleaned out, put the carb back on, but I lost two parts.

One is a thin, flat piece of metal that goes on a bolt that rocks forward to back on the snowblower, it sounds like it moves a plate inside the motor or something, it attaches to a spring which attaches to a lever that moves with the throttle lever.

The other is a thin metal rod with some bends in it that I dont quite remember how it's configured, it attaches to a rotating part on the top of the carb that moves the plate on the opening to the carb.

If anyone could tell me specifically what those parts are called, or where to find them to buy new ones... maybe a picture of how they go together so I can maybe fabricate something... I've been looking at exploded view breakdowns of the machines, and parts lists, but I cant find anything exactly it.
 


the rod off the lever goes to the throttle hole in the part that moves the inner butter fly. thats the governor lever on the block. it needs to be set the right way too when you put the new one on.

second rod sounds like the choke.
 
Yeah the first sounds like the butterfly, absolutely essential unless you want WOT all the time. It doesn't have to come off to rebuild.

The other sounds like the throttle linkage. The rotating part is the throttle, in which it attaches. If you can't remember how it goes on, try looking through this search for a machine like it if there is one.
http://www.youtube.com/user/donyboy73/search?query=throttle+configuration

If not, with a pic I could probably tell you since I've worked on quite a few.

That video you posted scotty, is for a fix I had to do to one of the snowblowers I bought to fix and resell, it was revving like crazy and the screw was a bit loose and came out of adjustment.
 


some that dont work, the whole lower cable connection need to come off, and doing that sucks cause its holding the throttle and gov setting with it its springs and levers. then theres the cute springs that the rod goes through with the hooks on both sides.

ive worked on way to many small engines. you need the carb settings for the mix screws? well starting settings, you need to tune it for hi and low speed.
 
Yeah. IF it's adjustable (most newer emissions carbs aren't) The air screw on the side goes to .75 turns out, and the bottom jet goes to I think 2.5. Then fine tune it when it's running.
 
i start @ 1.5 turns out for the side screw, and like 2 turns out on the bottom. then warm it up, then hit hi throttle, work the bottom screw in till it starts to choke its self out, then open it up till it hits that fat spot lol then turn it back in like a 1/4 turn. you dont want it too rich when it hits a load, it will bog out. may need to fine tune it with a load on.

same goes for the side screw at idle.
 
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