The carburetor can be cleaned and rebuilt and. Overtime ethynol in gasoline can leave deposits in the carburetor and this can restrict the flow of fuel resulting in poor engine performance. ![]() Optimum adjustment is obtained when a very slight 4-cycling sound is heard. This item has been sourced from the original manufacturer to be used with small engine carburetors from Walbro. 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. Tool Parts Carburetor Oil Cups Fuel Pipe Repair Kit For Walbro Carb 2. With the high-speed needle set at 1 ¼ turns open the engine should be running at a slightly richer than normal high speed. Kit Oil PART Parts Pipe Repair Stens Tool WA19A Walbro WT20 WT3 WT309. WITH BOTH NEEDLES SET AT 1 ¼ TURNS OPEN PROCEED AS FOLLOWS:ġ. With the engine at the high-speed position, the manifold vacuum draws the majority of the fuel from the carburetor nozzle. 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. Make sure to refer to the appropriate diagrams of your model for the correct location and application of this part. Turn idle needle counterclockwise (rich) until optimum smooth engine idle is obtained. Use our interactive diagrams, accessories, and expert repair help to fix your Walbro HDC Series Carburetor. Continue turning the idle needle clockwise until a decrease in idle RPM is evident. 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. Find many great new & used options and get the best deals for Carburetor Kit & Diagram fits Walbro LUA-9 LUA9 fits Onan 146-0271D engine D82 at the best. WITH BOTH NEEDLES SET AT 1¼ TURNS OPEN PROCEED AS FOLLOWS:ġ. 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. Clear diagrams and information to help in parts ordering or. View free online images or download the full Walbro SDC Carburetor Manual PDF which can be printed or saved on any suitable device. ![]() NOTE I: With the engine at the idle position the carburetor feeds fuel thru the primary idle hole. Walbro SDC Carburetor Manual and Parts List for the correct identification, repair and service of the SDC series carburetor found in trimmers and blowers. DOWNLOAD FREE PDF MANUAL IDLE ADJUSTMENT OF Walbro HDA Carburetor
0 Comments
Leave a Reply. |