Husqvarna 343F, 345FX, 345FXT, 343R, 345RX manual Wiring diagram

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Electrical system

2

Separate the contacts (A-A) and (B-B).

Then extend the cables (A) and (B) with approx. 90 cm long steel wires attached to the contacts.

Remove the bolt and pull off the left grip from the handle.

Pull one cable at a time from the handle.

Remove the heating element from the handle with a pair of flat nosed pliers.

Separate the contacts (A-A) and (B-B).

Then extend the cables (A) and (B) with approx. 90 cm long steel wires attached to the contacts.

This is to make it easier to draw the cables to the new heating element back through the handle.

1 = black

2 = blue

Remove the bolt that holds the left grip on the handle.

Pull out handle from the handlebars and then the cables, carefully and one at a time, so that the steel wire does not loosen from the cables.

The heating element is located in a pocket in the outside of the handle.

Use flat nose pliers to pull out the heating element from the handle.

NOTE!

Do not pull the cables or their connections. Connections can be easily broken.

Assemble in the reverse order as set out for dismantling.

Wiring diagram

LH

=

Left handle

RH

=

Throttle

HC

=

Heater switch

TT

=

Triple contact

IM

=

Ignition module

SC

=

Short-circuit switch

Gen

=

Generator

Blu

 

= blue

Bl

 

= black

Re

 

= red

Bl/Blu

= black/blue

Use a universal tool when checking wiring and heating elements. Set the instrument to measure resistance to check for open circuits.

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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 502 71 Electrical systemChecking the ignition spark Tip Replacing the spark Plug cover 502 50502 54 Drive dogs Heated handlesWiring diagram Electrical system Fuel system Fuel system Air filterTank venting Fuel filterDismantling Fuel pumpCarburettor Blending unit Carburettor’s designMetering unit Pump unit Dismantling the carburettorFuel system Little shorter than the L-needle PositionedFor example, the H-needle is a Assembling the carburettor Check carefully that the fuel hoses H-needle is a little shorterThan the L-needle Are not bent or pinched whenFine adjustment Carburettor settingsBasic setting Tachometer should always be used to find the optimal Setting Recommended max. speed must not be exceededCorrectly adjusted carburettor Idling speed T-screwThrottle Carburettor adjustment 345RX/FXAdjusting the L-needle Adjusting the H-needle 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 Decompression valve Turn the valve the right way when fittingWhen the valve is fitted the small hole must face outwards Cleaning, inspection Inlet manifoldCause Action Analysis and actionsInsufficient lubrication 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 Far as possible between the bolts Leakage testing CrankcasePress down the sealing plates as To ensure a proper sealHusqvarna E-Tech 503 55