I have been dealing with this issue for 9 years, Aaron, so it's not a real big deal I guess---LOL! I don't let it idle long and close the fuel shutoff when not using the tractor. Still might check into a new one sometime.
The old "Rat MTD" runs good again! Made up an exhaust brace out of some scrap steel.
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That carb tuned in without much adjustment at all. It came with the hi-speed and idle screws turned out 2-1/2 times. I closed them up to 1-1/2 before it got installed. Just thought that was too much. Drove it around the yard for a while using all the gears. No problems there. Pulled the deck lever and quickly discovered the deck is locked up somewhere! That deck mechanism was in bad shape when I was using it way back when. The splines had stripped on one of the gearboxes and I had a friend weld it so it would work. Of course it wasn't perfectly straight so there was a vibration after that. I'm not a fan of splined drive shafts on small tractors. I discovered then that the kill in the ignition switch or wiring isn't working any more. I had to jump off the tractor while the belt was smoking and release that lever. That short engagement lever was always tough to use even in my younger days! I never thought about reaching in the discharge and seeing if the blades move before this. The deck will be removed. Drove around a little more, brought it in the shop and choked the engine off. It restarted well but puffed out some smoke probably due to closing the choke to shut it off.
Went to put the air filter back together, and discovered the filter that came with the carb is much bigger.
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I was hoping the part number was on this sticker but nope.
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I had been using a K&N breather filter on this thing. I drilled a hole in the top and cut off the flange for a hose clamp to hold it to a breather tube at some point many years ago. Put it back on for now. Will give it a good cleaning but not today. Was probably a throw-away from the race car back in the 80's! Might even put a longer stud in and use that new filter open. Like I said, there is no plan for this old beater besides just making it drivable.
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Cut that part of the grill out to reach the choke lever and put the grill on. Hard to see the end of the lever but it's easily reachable with a finger.
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Set the hood on but don't have hinge bolts in it yet. Done for today.
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DAC