Question about Homelite Consumer Products 9.0 Amp, 14 In. Chainsaw
The Homelite 330 has a set of "reed valves" (thin fiberglass flaps held in a V shaped holder, narro end of the V point to the engine) in between the carburetor and the intake port of the cylinder.
Looke here http://books.google.com/books?id=ISzSHyegUSYC&pg=PA218&lpg=PA217&ots=TiCmMmPbXi&dq=330+operators+manual+homelite#PPA218,M1
then look at part #26 on page 218.
basically it does:
Airflow Reed Valve engine
Their function is to open slightly when the air is rushing through them toward the engine, and yet flap closed again to stop the backflow or air/fuel from going out of the cylinder. The sucking action of the engine lets the air slightly move the reed off of the small part of the "V" and the air flows in. As the airflow is reduced the mechanical tension of the reed, trying to remain flat and not bent, closes it.
Since they are flaps there is a momentary time then the air will rush out as they close. But you not should see "lots" of fuel coming out of the carburetor.
Two symptoms will cause excess fuel/air rushing out of the carb.
1. if they are old the reeds can be slightly warped and just not seal against the reed valve cage. That means replacing the reeds (if servicable) or the reed valve (cage and reeds together).
2. If any dirt or sawdust ever got into the engine, there could be some particles stuck between the reed valve and the cage. This is usually near the top of the reed valve and once it's in there, it can't get out. You can sometimes tage out the reed valve cage, remove the reeds and clean everything. The foam seal around the perimeter if the black top cover of the Homelite 330 usually breaks down over time and lets dirt/fine sawdust into the "Clean side" of the air system. You should see no dirt/sawdust or debrea around the carburetor.
In either event you would want to make sure that when you are lookin at the part that the reeds are perfectly seated on the reed valve cage. If not, you get the symptoms that you described.
Posted on Jan 28, 2009
try high speed h=2turn and low speed L=2 and a half tu
adjust the T
best wishes savumihai71
Posted on Dec 02, 2008
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