Topica Loopframe_Guzzi Archive


Subject: Re: Stupid newbie question #1

Author: Patrick Hayes

Date: Jan 25, 2005, 2:15 PM

Post ID: 1718272546





Dorien Berteletti wrote:

 To add to Patrick's explanation the owners manual clearly suggests
placing the lever in the "C" chiuso position for starting with 3/4
throttle. The "A" aperto is for normal running and actually lifts the
enricher therefore it is under tension when riding.

Hmmmm. I don't think I said that, and I hope not. The enrichener valve
has to be seated and sealed at the bottom of its bore for normal running
operation. This is the reason that you have to insure that your outer
cable housings have 1/8" or so of free-play at the off or riding
position. The enrichener valve is ONLY a cold start device.

Forget the labelling on the hand lever. Look at the logic. You pull on
the cable to open the device and enrich your cold start mixture. You
relax the cable to close and seal the enrichener. Now, which way do you
twist the hand lever to pull on cable core? That should be easy to see.

It may be possible that the GUZZI manual mucked around with the
instructions since most people think of these as air chokes and think to
operate them as air chokes. "Thus close the choke to start." But, that
is NOT what is happening within the carburetor body. Better that you
understand what is happening internally and manage your hand controls
based on that understanding.

Patrick Hayes
Fremont CA

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