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