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I was given a mtd 5 hp model 243-645B000 chipper. It had been

Stored for a number of years with gas. I took the tank and carb off and the stem was clogged up. it started up but I have to run it on choke to keep it running. maybe replace the diaphragm?

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Because it was stored with gasoline in it, the entire carb. is likely gummed up. It needs to be removed, soaked in carb. cleaner for a few hours, and then rebuilt using the correct carb. kit.

Posted on May 28, 2009

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I have a mtd chipper shredder that's been idle for years. I have new spark plug, gas & oil. Air filter is clean. Any other tips to get it fired up?


The unit could possibly have carburetor issues after being idle for so long. For a start, add maybe some solvent to the fuel to attempt varnish removal in the carb without taking it off the engine. I suggest using a dose of the Chem Tool Berryman B-12 in your fuel mix. It is pretty strong and if you are lucky, it will enable the engine to run. If not, carb removal and rebuild will probably be required.

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I have a Briggs & Stratton 5HP Engine (Horizontal shaft) And it has the diaphragm carb on it. The last person to own it messed with the carb adjustments and it'll have trouble starting and idling...


2 turns out should get ya started adjust from there. If adjusting doesn't help you may need a new diaphragm. While you have diaphragm out blow through the 2 holes you'll see under diaphragm with air to hopefully avoid pulling carb off to clear screens on pick up tubes. Also check carb mounting screws through carb into tank. They frequently come loose on chippers and log splitters because of hard mount.

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I Have a push lawm mower (mtd product model # 11a-439s729) serial# 1d261k81143 I have to prime before pulling the lanyard to start . I have no problem starting the engine ,the real problem is it will die...


I really need your engine number but I am going to guess that it is a 3.5 to 4 HP Briggs & Stratton with a black primer bulb on the side of the carb.

Try this the next start. Take a screw driver handle just a bit smaller than the primer bulb and FORCE it against the carb body trying to make a seal with the primer rubber against the carb body. You use your thumb if you can manage to depress the entire area of the center of the primer bulb agains the carb body. If it runs normally when you do this..... the Primer Bulb has a pin hole in it. (No joy..... read on)

If after doing the above you strill have the same problem remove the air cleaner and tighten all of the screws that mount the carb to the gas tank. Often over time the carb body will warp and then it starts getting air introduced into the diaphram that is between the cab and the gas tank. Tighten the screws. There are usually 5 of them. (Remember the body is plastic.... tight but don't break it) Then try another start.

If that does not work the diaphram between the carb and gas tank is probably damaged and will need replaced.

If you need parts info respond with your engine number or go to www.briggsandstratton.com and look it up for yourself using your ENGINE TYPE MODEL SERIES number found on the air shroud above the spark plug.

Thanks for choosing FixYa.

Kelly

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You should be chipping away right soon!

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MTD manuals are here:
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