Contents | Husqvarna 343F, 345FX, 345FXT, 343R, 345RX specification

7

Crankshaft and crankcase

7.

Contents

Dismantling ________________________________ 52

Inspecting the crankshaft _____________________ 54

Assembly _________________________________ 55

Leakage testing the crankcase _________________ 56

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Image 52

Husqvarna 343F, 345FX, 345FXT, 343R, 345RX manual Crankshaft and crankcase, Contents

Contents

English Model 343R, 345RX, 343F, 345FX, 345FXT Contents Workshop Manual Brushcutter, Trimmer General recommendations Contents Starter 1Starter Dismantling Assembly Starter Replacing the drive dogs Electrical system Checking the ignition spark Electrical system502 71 Tip Replacing the spark Plug cover 502 50 502 54 Drive dogs Heated handles Wiring diagram Electrical system Fuel system Fuel system Air filter Tank venting Fuel filter Carburettor Fuel pumpDismantling Metering unit Carburettor’s designBlending unit Pump unit Dismantling the carburettor Fuel system For example, the H-needle is a PositionedLittle 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 when Basic setting Carburettor settingsFine adjustment Setting Recommended max. speed must not be exceeded Correctly adjusted carburettorTachometer should always be used to find the optimal Idling speed T-screw Carburettor adjustment 345RX/FX Adjusting the L-needle Adjusting the H-needleThrottle Rotating Check for wear on pins a and B Tip Page Centrifugal clutch Centrifugal clutch 502 21 Centrifugal clutch Do not lose the sleeve bearings found in the clutch shoes Clutch drum 502 11 Change the bearings in the clutch housing if necessary Page Angle gear Angle gear Let the small circlip around the axle remain 503 97 Input axle with pinion must be dismantled first Shaft 503 80 Cylinder and piston Cylinder and piston When the valve is fitted the small hole must face outwards Turn the valve the right way when fittingDecompression valve Cleaning, inspection Inlet manifold Insufficient lubrication Analysis and actionsCause Action Piston scoring caused by heavy carbon deposits Piston damage caused by a too high engine speed Piston ring breakage Foreign objects Cause Service tips Defect Action Wear tolerances Crankshaft and crankcase Crankshaft and crankcase Crankshaft and crankcase 502 52 Inspecting Crankshaft Assembly Leakage testing Crankcase Press down the sealing plates asFar as possible between the bolts To ensure a proper seal Husqvarna E-Tech 503 55