![]() Optimum adjustment is obtained when a very slight 4-cycling sound is heard. With the engine running at high-speed tum the high-speed needle clockwise (lean) until the engine runs smooth or into a 2-cycle sound.ģ. Some engines will give a 4-cycling sound.Ģ. With the high-speed needle set at 1 ¼ turns open the engine should be running at a slightly richer than normal high speed. Parts Lookup - Enter a part number or partial description to search for parts within this model. ![]() LMK-26-1 PARTS LIST JavaScript Disabled - Unable to show Cart. Walbro Carburetor LMK-26-1 Parts Diagrams SWIPE SWIPE. ![]() Complete exploded views of all the major manufacturers. WITH BOTH NEEDLES SET AT 1 ¼ TURNS OPEN PROCEED AS FOLLOWS:ġ. Walbro Carburetor LMK-26-1 Exploded View parts lookup by model. Whether you’re rebuilding your old one or installing a new one, it’s important to have a clear understanding of how everything works. Run: 8:30AM Carburetor Application Guide Page: 1 Active Brush Cutter OEM Part Engine Model Walbro Repair Kit Gasket Kit Metering Spring 20643 INDY WYK-89-1 K21-WYK D13-WYK 98-3160-7 21664 BIG 5. With the engine at the high-speed position, the manifold vacuum draws the majority of the fuel from the carburetor nozzle. If you’re a 2-stroke lover, then you know the importance of a good carburetor. Turn idle needle counterclockwise (rich) until optimum smooth engine idle is obtained. Walbro Carburetor Repair, revision date 27 June 2010 screw is on the right side of the picture on the top cover. Indeed, after learning how the carburetor works, I was. Continue turning the idle needle clockwise until a decrease in idle RPM is evident. Walbro Carburetor Theory Diagram I decided to develop a complete theory of operation with drawings and pictures so that all Walbro carburetors could be repaired. Readjust speed screw to correct engine speed.Ĥ. Turn the idle needle clockwise (lean) until the engine idles smoothly.ģ. Start the engine and adjust idle speed screw (not idle needle) so that engine idles at a moderate speed slightly slower than clutch engagement.Ģ. WALBRO CARB WB19 with TKM Logo (This carb has not been set up to run in the TKM classes, so will need pop off pressure set and jets set to correct settings. Use our interactive diagrams, accessories, and expert repair help to fix your. WITH BOTH NEEDLES SET AT 1¼ TURNS OPEN PROCEED AS FOLLOWS:ġ. Walbro WYL Series Carburetor parts that fit, straight from the manufacturer. NOTE II: Both high speed and idle adjustment needles are pre-set by the engine manufacturer and should only be readjusted by an authorized Walbro service person. The second and third idle holes act as air bleed holes to mix with the fuel to create the correct air/fuel ratio. NOTE I: With the engine at the idle position the carburetor feeds fuel thru the primary idle hole. DOWNLOAD FREE PDF MANUAL IDLE ADJUSTMENT OF Walbro HDA Carburetor
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