Table of Contents
How do I adjust a Zama carburetor?
Locate the carburetor on the side of the engine, directly under the air filter. On the side of the carburetor are three adjustment screws; there are stamped letters beside these screws, “L” for the low speed adjustment screw, “H” for high-speed adjustment and “TAS” for the idle adjustment.
How do I identify my Zama carburetor?
On a Zama carburetor there are 2 sets of numbers that need to be acquired that are located on BOTH sides of the carburetor. For example on one side you may see C1U,C1Q,or C1M while on the other side you may K23, S118 or EL35 respectively. The actual Zama carburetor number would be C1U-K23, C1Q-S118 and C1M-EL35.
How does a Zama carburetor work?
The vacuum from the expanding bulb draws fuel through the inlet check valve from inside the metering chamber. the metering diaphragm, and lifts the inlet needle off its seat. pump, into the metering chamber and up to the primer bulb. The fresh fuel in the carburetor makes the engine easier to start.
How do you adjust a carburetor on a 2 cycle engine?
How to Adjust the Carburetor on a Small Two-Stroke Engine Locate the two adjustment screws on the carburetor. Turn both of the screws counterclockwise to back them out. Turn each screw clockwise two full turns. Start the engine and let it warm up for a minute or two.
Where are Zama carburetors made?
Locations of Zama group and tasks in Guangdong, China serves as the production location of Zama Group. Approximately 1,600 associates produce electronic fuel injection systems, carburetors, oil pumps, solenoid-valves and other parts for the outdoor industry.
What are the 2 screws on carburetor?
There should be two screws on the front of the carburetor, which are used to adjust the air and fuel mixture. Often these look like flat-head screws and you can use a screwdriver to turn them, adjusting the amount of fuel and air mixing in the carb.
Where is the part number on a carburetor?
Look at the upper front of the carburetor on the piece known as the airhorn, or choke tower. This is a rectangular part of the carburetor with rounded edges, open to the top of the part. There will be a small number stamped there.
What does the diaphragm in a carburetor do?
The diaphragm is connected to the needle valve and as it moves inward it opens the needle valve to admit more fuel, thus replenishing the fuel as it is consumed. As fuel is replenished the diaphragm moves out due to fuel pressure and a small spring, closing the needle valve.
How do you adjust air fuel mixture screws?
Turn the screw clockwise until the engine starts to sound rough. Tightening the screw weakens the air and fuel mixture and decreases the amount of fuel flowing to the engine. Tightening the screw is also called making the fuel mixture leaner, which lowers the RPMs at which the engine idles.
How do I know if my carburetor is rich or lean?
Q: How Do You Tell if a Carburetor Is Rich or Lean? A: One way to tell for sure is by “reading” the spark plugs. If the plug tip is white, the mixture is lean. If it’s brown or black, it’s rich.
What do air bleeds do in a carburetor?
Air bleeds, sometimes referred to as “air jets” or “air bleeders” play a vital role in the operation of your carburetor. Air bleeds are responsible for determining the amount of air that will mix with each circuit in the metering block.
What happens if main jet is too big?
Typical Lean Conditions: (A too-large main jet also mimics this symptom.) – The engine runs hot, knocks, pings and overheats. – The engine surges or hunts when cruising at part-throttle. – Popping or spitting through the carb occurs when the throttle is opened.
How do I know if my carburetor is clogged?
Four Signs Your Carburetor Is Failing Engine Performance Reduction. As mentioned above, combustion starts and keeps your engine running. Black Exhaust Smoke. You shouldn’t see black smoke coming out of your exhaust pipe even if you drive a diesel. Engine Backfires or Overheats. Starting Difficulty.
What is a metering diaphragm?
A diaphragm meter is a positive displacement instrument which is used to measure the volume of gas that passes through it. The diaphragm also provides the seal between the measuring chambers of the device. As such the diaphragm meter has proven to be an accurate and reliable means of measurement of gas for many years.
How do I know if my carburetor needs adjusting?
The engine should rev smoothly and quickly as soon as you apply throttle. If the vehicle is displaying any sort of sluggish performance or misfires when you apply the throttle, then more adjustments are required.
How do you adjust a 2 stroke air screw?
When adjusting the air screw, if you want to go leaner then you need to open it up to allow more air in. Turn it out (counterclockwise). To make it run richer, turn it in (clockwise) to decrease the amount of air allowed through it.
Did STIHL buy Zama?
Dr. Nikolas Stihl, chairman of the STIHL advisory and supervisory boards, referred to a milestone in the history of STIHL and ZAMA: “The acquisition of ZAMA in 2009 has turned out to be a good decision.
Where are STIHL carburetors made?
Beach, Virginia and a majority of the STIHL engines or “powerheads are built in the United States from domestic and foreign parts and components”. The carburetors are manufactured in China; STIHL purchased Zama Corporation, Ltd., Hong Kong, on December 31, 2008.
