BMW R100R [17/168] Synchronising carburet tors adjusting cables inspection i ii iii

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b Setting firing point 2 9 SYNCHRONISING CARBURET TORS ADJUSTING CABLES Inspection I II III BASIC SETTING OF CARBURETTOR Remove engine protective cover Slacken 2 fastening screws 1 of the igni tion box Turn ignition box until marking flywheel inspection hole are aligned when strobed with timing strobe Turning in direction A Turning in direction B Ignition advanced Ignition retarded Tighten fastening screws of the ignition box Attach engine protective cover Seal inspection hole with protective cap Following end of adjustment and check Detach ignition timing device ignition box plug connection Re create plug connection to engine cable harness Fit on wire clip Attach engine guard coverwith two hexa gon sockets Screw in spark plugs and tighten to speci fied tightening torque Plug in spark plug connector Close inspection hole with protector cap Tightening torque Spark plug dry Line of flywheel marking Z must be aligned with inspection hole marking notch Line above below notch Ignition advanced Ignition retarded Full ignition advance from 3000 rpm 32 BTDC Again strobe flywheel with timing strobe at idling speed 800 1100 rpm Line of flywheel marking S must be aligned with inspection hole marking notch Static firing point 25 Nm notch 6 BTDC at idling speed Warm up engine until it is at normal oper ating temperature approx 80 C oil tem perature e g measured at dipstick Provisionally set throttle cable play of both carburettors to approx 4 mm with adjusting screw 1 to ensure throttle valves do not stick on the throttle cables but close fully Adjust cable of starter device of both car burettors so that the starter lever 4 is pushed into its end position when choke is closed Gently screw in idle mixture regulating screw 3 on both carburettors as far as the stop Following this unscrew both regulating screws evenly approx 3 4 turns Unscrew throttle valve stop screw 2 of both carburettors until they are touching the throttle valve lever Following this screw in both stop screws evenly approx 1 2 turns CHECKING SETTING FIRING POINT Dynamic a Checklng firing point Clip trigger sensor of BMW Diagnosis Tester over ignition cable Connect ground cable to chassis with clamping tongues Remove protective rubber cap from in spection hole in engine housing Start engine Maintain engine speed at 3500 rpm Strobe flywheel with timing strobe through inspection hole 2 16 2 17

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