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Posted by digitalmaster on May 15, 2006, 5:28 pm
> x-no-archive:yes
>
> I dont let it sit dry.
> By the way, I always leave the throttle in the fast position and it
> still does it even if I move the throttle to slow.
> Stubby wrote:
>> stryped wrote:
>> > x-no-archive:yes
>> >
>> > I have a 5 or so year old craftsman riding lawn mower 48 inch cut. It
>> > seems to run fine while mowing if th eblades are engaged. However, when
>> > I turn the blades off after mowing for awhile, the engine surges like
>> > someone is making the throttle go up and down. It "jerks" while you are
>> > tryign to drive it. I can remember if it still surges when in neutral
>> > or not but it is bothersome when you have to drive somewhere with the
>> > blades off.
>> >
>> > Any advice on what is the problem and how I address it?
>>
>> I'll bet you run it dry when you put it up for the winter. That lets
>> the diaphragm in the carburetor get hard. It can't flex right and the
>> accelerator pump won't work right. Get a rebuild kit, throw away all
>> the replacement valves and nozzles, just install the gasket/diaphragm.
>> It takes about a half hour.
>
I would try the air filter first if you have not already as suggested in a
previous post.Some carbs have an "air bleed screw" that can be adjusted to
alleviate surging sometimes.Drop the bowl on the carb and clean it also.
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