Briggs & Stratton 14.5hp -- Odd Noises

Have a riding mower with a Briggs & Stratton OHV 14.5hp vertical shaft motor which makes some rather disturbing "klunking" sounds during startup and spindown. I'm wondering what the heck this might be. It sounds fairly normal when running. Any ideas?

Reply to
Dave
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Is it electric start or pull rope ?

IF pull rope there are some ball bearings in the part just under the pull rope and they engage the pull rope clutch to start the engine. When the shaft starts spinning centrifical force pulls them outward which disengages the clutch. You might be hearing these bearings as they are being driven outward. IF electric start it's something else.

J

Dave wrote:

Reply to
Joey

Oh it's electric start. The "klunking" sounds close to once per rev but it fades away immediately as the motor gets up to speed.

Joey wrote:

Reply to
Dave

Probably the motor is worn out, a bearing is giving out.

Reply to
m Ransley

Or the rod is knocking and quiets down when gets some oil in it and is covered up by the exhaust noise when it's running...

Reply to
Duane Bozarth

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