Posted by Leckster on October 17, 2007 at 13:19:25 from (198.140.63.34):
I have a cracked zenith L63 carb and was looking to replace it, I have the following questions.
I found 2 Zenith Carbs that have no numbers but look identical to the one I have.
1st - Should I buy a carb not knowing if it is an L63 and just by looks and manufacturer"s name?
2nd - 1 has an internal main jet which I guess is self controlled (there is just a plug on the end), and the other carb has a valve on the end and the description states it is a main jet adjustment. What is the difference??? Which one would be the better buy (preformance releated).
My instruction manual for the engine shows the non-adjustable one in the diagrams (main jet port has a plug in the end) but my existing engine has an adjustable main jet on it (valvle in the end).
Any help in deciding what to buy and the reasons why would be greatly appreciated
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Today's Featured Article - Engine Valves - Some Helpful Information - by Staff. Intake - On the intake stroke the piston moves doward, sucking in carburized fuel through the open intake valve. Exhaust valve is closed. Compression - With both the intake and exhaust valves closed, the pistons upward stroke compresses or squeezes the fuel into the combustion chamber. Firing - Ignited by the spark, the compressed fuel explodes and forces the piston downward on its power stroke. Intake and exhaust valves are closed. Exhaust valves and seats are exp
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