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From: warren@ihnss.UUCP (Warren Montgomery)
Newsgroups: net.consumers,net.auto
Subject: Help with a lawnmower engine
Message-ID: <2091@ihnss.UUCP>
Date: Mon, 4-Jun-84 12:28:56 EDT
Article-I.D.: ihnss.2091
Posted: Mon Jun  4 12:28:56 1984
Date-Received: Wed, 6-Jun-84 01:20:29 EDT
Organization: AT&T Bell Labs, Naperville, IL
Lines: 34

(net.auto readers who are not mechanics can type 'n', sorry).

My el cheapo Briggs & Stratton powered rotary mower has developed a
familiar disease that I don't know how to cure.  I have seen the
same disease in other 4 cycle mowers over the years and never seen
it really cured.  Anybody know what to do for it?  Here are the symptoms:

1)	It's very fussy about starting.  It starts best with the
	throttle just bearly open, and must be a allowed to chug
	along a while before opening it up.

2)	It stalls very easily under load.  Apparently, it has no
	torque with the throttle open at slow speed.  This makes it
	unstable.  Opening up the throttle can stall it, but backing
	off will re-start it if it's still spinning.  Likewise, I
	can sometimes recover from a stall induced by heavy grass by
	backing out AND reducing the throttle.

I have recently tuned it, including replacing and adjusting the
points, adjusting the aramature gap, replacing the plug and
adjusting the mixture screw to specs.  (Though it is less unstable
with a richer mixture, even though it idles much rougher and slower
with this setting).  All of this helped, but not much.  I can't find
any relevant information in the service manuals for this motor, but
it must be a common problem.

Any help would be appreciated.

-- 

	Warren Montgomery
	ihnss!warren
	IH x2494