Topica Loopframe_Guzzi Archive


Subject: Re: Setting Carbs

Author: Martin Cooke

Date: Sep 19, 2002, 6:40 AM

Post ID: 1711042890


adjustment is done warm, but don't let motor get too hot with no airflow
over pots.

can be done with no guages: disconnect 1 HT* lead & start engine.screw in
throttle stop till it idles slowly. play with mixture screw till it is at
sweetest point. reconnect HT lead.

repeat with other side. connect both HT leads & motor will idle too fast.
screw out both throttle screws 1/4 turn at a time till idle is 850/100 rpm.

next stage is more hit & miss. equalise free play in throttle cables by eye
(0.5>1.0mm). remove air cleaner(s) open twist grip & make sure both slides
commence rise together. impossible to see both at once so you can use a
mirror or if you have huge hands you can stick a finger into back of each
carb & do it by feel.

both adjustments are far easier with guages though, and more accurate. i use
type that has stainless rods floating in clear tubes.

cookie

*don't do this on later bikes with electronic ignition. HT leads must be
grounded at all times on these bikes.

----- Original Message -----
From: "Keith Ruff" <klru-@fcc.net>
To: <Loopfram-@topica.com>
Sent: Thursday, September 19, 2002 1:19 PM
Subject: Setting Carbs


 Should this be done when the bike is warm or cold? As far as synching
the carbs, I do not have the screws in the manifold to tap into to do
this, should I even bother drilling the holes in them to use my carb
stix? What steps should be followed, I gather 1st turn the idle screws
all the way in (clockwise), then back them off 1 1/4 turns, then set the
mixture on each side (my right side seems to be dead on per the spark
plug condition, left side appears too rich (blackish)). After mixture
is set, go back and adjust idle speed on each side making sure to do
them evenly?

Keith Ruff
71 Police Ambassador - NJ

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