Husqvarna 343F, 345FX, 345FXT, 343R, 345RX manual Dismantling, 502 54

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Electrical system

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Dismantling

Remove the starter, cylinder cover, and spark plug.

Attach piston stop no. 502 54 15-01.

502 54 15-01

Remove the nut holding the flywheel.

Remove the flywheel.

502 51 94-01

Remove the ignition module and the generator.

502 50 18-01

Dismantling

Remove the starter, cylinder cover, and spark plug.

Fit piston stop no. 502 54 15-01 in the spark plug hole.

NOTE!

Place the piston stop so it is caught between the piston and the cylinder head. Not so it sticks out into the exhaust port.

Remove the nut holding the flywheel.

Remove the flywheel from the crank- shaft using punch no. 502 51 94-01.

Leave a gap of approx. 2 mm between the punch and the flywheel.

Gently knock the punch with a hammer while holding the flywheel with your other hand.

Dismantle the ignition module.

Remove the ignition cable from the holder (A).

Remove both bolts (B).

Loosen the short-circuit cable (C) from the ignition module.

Remove the generator (D) that supplies power to the heated handles.

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Contents English Model 343R, 345RX, 343F, 345FX, 345FXT Contents Workshop Manual Brushcutter, TrimmerGeneral recommendations Contents Starter1Starter DismantlingAssembly StarterReplacing the drive dogs Electrical system Electrical system Checking the ignition spark502 71 Tip Replacing the spark Plug cover 502 50502 54 Drive dogs Heated handlesWiring diagram Electrical system Fuel system Fuel system Air filterTank venting Fuel filterFuel pump CarburettorDismantling Carburettor’s design Metering unitBlending unit Pump unit Dismantling the carburettorFuel system Positioned For example, the H-needle is aLittle shorter than the L-needle Assembling the carburettor H-needle is a little shorter Than the L-needleCheck carefully that the fuel hoses Are not bent or pinched whenCarburettor settings Basic settingFine adjustment Setting Recommended max. speed must not be exceeded Correctly adjusted carburettorTachometer should always be used to find the optimal Idling speed T-screwCarburettor adjustment 345RX/FX Adjusting the L-needle Adjusting the H-needleThrottle RotatingCheck for wear on pins a and B Tip Page Centrifugal clutch Centrifugal clutch 502 21Centrifugal clutch Do not lose the sleeve bearings found in the clutch shoesClutch drum 502 11Change the bearings in the clutch housing if necessary Page Angle gear Angle gear Let the small circlip around the axle remain503 97 Input axle with pinion must be dismantled firstShaft 503 80Cylinder and piston Cylinder and piston Turn the valve the right way when fitting When the valve is fitted the small hole must face outwardsDecompression valve Cleaning, inspection Inlet manifoldAnalysis and actions Insufficient lubricationCause Action Piston scoring caused by heavy carbon deposits Piston damage caused by a too high engine speed Piston ring breakageForeign objects CauseService tips Defect ActionWear tolerances Crankshaft and crankcase Crankshaft and crankcase Crankshaft and crankcase 502 52Inspecting Crankshaft Assembly Leakage testing Crankcase Press down the sealing plates asFar as possible between the bolts To ensure a proper sealHusqvarna E-Tech 503 55