[AT] Briggs stumbles when load increases

[Jeff Pilbeam]

Weak spark, or throttle shaft wear causing Potential Air Leak


Jeff Pilbeam 

-----Original Message-----
From: at-bounces at lists.antique-tractor.com
[mailto:at-bounces at lists.antique-tractor.com] On Behalf Of Len Rugen
Sent: Tuesday, May 10, 2005 9:51 AM
To: Antique tractor email discussion group
Subject: [AT] Briggs stumbles when load increases

I have a 8 HP I/C Briggs that is about 15 years old but has been well cared
for.  It starts on the first pull and doesn't use any oil.  Its problem is
that when a load hits it, it "stumbles" and nearly dies, then runs rough for
awhile.  If the load stays constant, it will handle it, but if it varies, it
runs bad.  It has a float carb, and will leak when not running unless I turn
off the fuel, so I know it needs at least a float valve.  

What else could it be?  

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