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Posted by spaco on May 15, 2006, 7:52 pm
Since it's a Kohler, it probably has an internal governor which is not
likely to get full of grass clippings. Later posts may be more to the
point for you, but I would be surprised if the carb's throttle shaft of
bearing surface wears that badly in only 5 years unless youb put Lots of
hours on it.
Pete Stanaitis
--------------------
stryped wrote:
> x-no-archive:yes
>
> Can you tell me where the govenor is on this engine and what it looks
> like? This is a Koler engine.
> spaco wrote:
>
>>I agree that the problem is most likely with the governor. There may be
>>a build up of crud somewhere in the system that makes the governor bind.
>> this would be particularly true if the governor uses a vane in the
>>flywheel's air stream to sense the engine speed.
>>
>>Pete Stanaitis
>>------------------
>>
>>Martin 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?
>>>>
>>>>Thanks!
>>>
>>>
>>>It sounds as if the governor may be "hunting" under light load due to
>>>slight misadjustment. I'd check to see if the spring or other parts of
>>>the linkage may be damaged or binding. Engaging the blades could
>>>smooth this out by either adding load, which would possibly cause the
>>>throttle governor to move to a less-binding position, or by their
>>>flywheel effect.
>>>
>>>I guess it's also possible that the low-speed carburetion circuit may
>>>have a problem, causing the engine to govern poorly at nearly-closed
>>>throttle settings.
>>>
>>>Martin
>>>
>
>
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