Makita EK7650H Technical Information

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[4] DISASSEMBLY/ASSEMBLY[4]-5. Carburetor (cont.)R epairP 11/ 19ADJUSTMENT OF CARBURETOR AFTER REPLACEMENTASSEMBLINGFig. 38Fig. 39Fig. 40Pull throttle lever fully after a while engine running at idle position. When there isa problem with the engine quick acceleration, adjust H needle (Fig. 38) as follows:(1) Warm up the engine by pulling the throttle lever fully for one minute.(2) Keep engine idling and do fine adjustment of the idling speed by turningH needle (Fig. 38) with a thin slotted screwdriver.(3) Pull the throttle lever quickly. If Engine stall happens/ Engine does not reachthe maximum rpm, do step (4). If there are no problems with the engine quickacceleration, go ahead to step (5).(4) Unscrew H needle 1/8 turn (45°) with a thin slotted screwdriver.After pulling the throttle lever fully with no load, retry the step (3).(5) Push two Limiter caps (Fig. 37) into Carburetor with a flat top of rod.Note: It is not necessary to touch L needle.Assemble by reversing the disassembly procedure. Be careful to the following points.• Align the ends of Sponge sleeve 9 and Breather on Tube 3-190. (Fig. 39)• Set Breather in place so that Tube 3-190 is fixed to the rib in Tank complete. (Fig. 40)• Set Tubes, Choke linkage and Throttle linkage in place. (Fig. 41) Be careful to eachdirection of the linkages.Spongesleeve 9Tube 3-190Perspective viewBreatherFig. 41Lead unit (B) between Contactspring and Ignition oil CarburetorTube 3-120 betweenPrimer pump andGrommet onTank completeTube 3-300 betweenCarburetor andGasoline filter inTank completeTube 3-190(Refer to Fig. 39.)Throttle linkageChoke linkageTube 3-45 between Hose jointand Carburetor Tube 3-35 fromHose joint toFilter bracketHose jointFix the assembled partdrawn in Fig. 39 withLead wire holder inTank completeLead unit (A)Plate on Switch lever Tube 3-190 betweenPrimer pump andCarburetor(Refer to Fig. 39.)Adjust H needle through the holenear H mark with a thin slottedscrewdriver.Lead unit (A) must be routedunder these ribs.Contact spring on Lead unit(B) end must be insertedinto these notches of ribs.