Subaru Robin Power Products R1200 service manual Disassembly and Assembly of Carburetor

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9-5-2 DISASSEMBLY AND ASSEMBLY OF CARBURETOR

The most common trouble with the carburetor, apart from mechanical ones, is failure to provide the correct air-fuel mixture. This is generally caused by blockage in the air and fuel channels or fuel level fluctuation. In order to maintain the carburetor in a normal operating condition, it is vital to keep the air and fuel channels always clean so that the fuel flows normally. Disassembling and assembling procedures are as shown below (Refer to Fig. 9-5-2).

(1)Throttle System

@Remove the cross-screw (31), the throttle valve (26), and then pull out the throttle shaft (27).

0When the throttle stop screw (29) is removed, the spring (28) will also come off. Be careful when handling the throttle valve not to damage the valve edge.

(2)Choke System

@) Remove the. cross screw (20), and the choke valve (21), and then pull out the choke shaft

(22).

@When installing the choke shaft be sure to keep the notch of the choke valve in the main air jet side.

(3)Pilot System

@Remove the pilot jet (30). When removing it, use a proper tool so that the nozzle will not be damaged.

@Firmly fix the pilot jet when assembling the carburetor. Otherwise fuel leakage will occur resulting in engine trouble.

(4)Main System

@Remove the bolt (18) and the float chamber body (16).

@Remove the main jet (19) from the body (12).

@When assembling, firmly fix the main jet. Otherwise the air-fuel mixture will become too rich, causing engine troubles.

@Torque for the bolt (18) is 70 kg-cm.

(5)Float System

@Pull out the float pin (15), and then remove the float (14) and the needle valve (23). When replacing the needle valve, exchange it with a rubber needle.

*Don’t use a wire or a drill to clean the fuel passages (they may damage the orifice controlling the fuel flow). Use compressed air.

*The float pin is peensecured to the carburetor body; the needle valve can be removed from the opposite side of the peen-secured part by slightly striking the float with a thin bar-like object.

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Contents Rozh -J &ii Foreword Contents Assembly Items SpecificationsAC Output Power FactorRated 800 W Frequency 50 Hz Voltage 110 Output Max Output MaxUnder no load is approximately from 18V up to Frequency 60 Hz Voltage 12ov DC OutputFeatures CHOKE-RUN-STOP Component IdentificationFunction of Each Component L-5 Main Bearing Cover 4CONNECTING ROD and PistonCrankshaft CamshaftCarburetor AIR CleanerDescription of Main Operations ‘CCVoltage Regulation Under Load Fis Output Waveform Current @ Curr&t @ Operational Limits of the Generator Load Electric Battery Capacity Wire Length II ’ Mj 1 mI Measuring ProceduresPage To Measure Insulation Resist Control Panel L a Functional Check of Each ComponentOne section, replace with Assy 83 AVR Windings, or peripheral temperature Resistance Cleaning of Slip RingValue El 10.7J-z Exciting coil At rated rpmDisassembly and Assembly Driver Precautions ToolsPrecautions Nection Description I2 Remove the front cover SequenceI Part to remove j IFront cover DescriptionBy unscrewing three M5 x 8 screwsPart to Sequencej remOve Description PrecautionsBe careful not to Damage the fuel PipeLpanner Part to Sequence, removeSpanner @ Driver Remove the connector Assembling, be Remove $Ez End cover Description PrecautionsThat 1wiring Part toSee Fig. g-3-10 RemOve ’Rear ‘bracket DescriptionPull away the stator cover SequenceI Rpearfito~~ Description’ plastic hammer Siw‘ Part to / Sequencej remove ’ JFront Ibracket Description Necessary Precautions13 m/m box Spanner RemOve I10 m/m box spanner DescriptionPrecautions Necessary Tools Blower i 1 1housingNecessary Precautions . tools @ Driver One M6 x 12 bolt Precautions Bolt has only to be loosenedBrace nuts 112m/m box ’spanner 10 m/m box jspanner ’Governor Remove the governor lever j LeverRemove the starting pully 26 i &cocci*nIgnition coil from Crank case by takingNotch Spanner 1spring retainer’s Pull out the intake valve and the exhaust valveFront and hook ’ the minus driver RetainerCamshaft Description ISequenceI Part toCrankcase Tappets to distin Guish them from one Remove the crankshaft Be careful not to Be careful not to open the joint too wide, or it will breakAssembly Procedure WTolerances of new installed parts Piston and Piston Ring Connecting rod is joined to the piston with the piston pinTappets and Camshaft Connecting RODIntake Valve and Exhaust Valve =53 WV&e h valve guide clearanceBreather Plate and Tappet Cover Cylinder Head Tappet AdjustmentIgnition COIL, Exciting COIL, Flywheel and Starting Pulley Ignition PlugGovernor Lever Speed Control Muffler and Muffler Cover Nut1’7 Recoil Startor Head Cover and Blower HousingFront Bracket Rear Bracket and Stator Brash Holder Bracket Cover Page Front Cover and Element Cover Fuel Pipe ConnectionConnection of Coupler and Plug Secure the side cover with four M 5 x 8 screws Carburetor Schematic Diagram of the Fuel System By-Pass Choke Disassembly and Assembly of Carburetor 184 Safety Precautions Troubleshooting Starting failur Cock is closed Pzlzq L1Ill IISymptoms AIgnition coil ’ \ r?J Hanging posi- tion is not normal Abration 7Symptoms 0Governor system III Seat Case Case there Abnormal Operation Is too much Pour Lubri Been changed Replace Periodically 1Symptoms Voltemeter Stator sub-coil Symptoms LNo DC voltage is output Voltag,eistoo high QParts LSymptoms Symptoms Voltage Is abnormally low Parts Criteria Table For AdjustmentUel con Limit Items Adjustment Criteira Description Tools LT-Tw Wiring DiagramMaintenance Checks and Maintenance for Every 200 Hours Every Month Page Page Issue EMD-GS0095

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