Husqvarna 343F, 345FX, 345FXT, 343R, 345RX manual Drive dogs, Heated handles

Page 13

2

Electrical system

Drive dogs

Remove the bolts.

Remove the hooks and the springs to replace them.

Mind the washer (A) so as not to lose it.

Replace damaged parts.

Assemble in the reverse order.

502 50 18-01

Assembly

Check the key groove in the crankshaft and key in the flywheel. If damaged the components must be replaced.

Attach the ignition module and then the flywheel.

Check the air gap, see page 9.

0.3

502 51 34-02

Drive dogs

The drive dogs can be easily replaced if they are damaged.

Remove the bolts, the hooks and the springs.

Mind the washer (A) so as not to lose it.

Replace damaged parts.

Assemble in the reverse order.

Check that the hooks can be turned freely when the bolts are tight.

Assembly

Check that the key groove in the crankshaft is not damaged. If it is, the crankshaft must be replaced.

Attach the ignition module and make sure the short-circuit cable is not trapped.

Check that the key in the flywheel is not damaged. If it is, the flywheel must be replaced.

Attach the flywheel.

Check the air gap, see page 9.

Heated handles

The heating element in the handles consists of ceramic plates. These are self-regulat- ing with regard to temperature. When temperature increases, the resistance in the elements lowers and so does the temperature. So no separate thermostat is needed.

Remove the throttle from the handle.

Remove the throttle from the handle.

In order to have access, the bolt that

See also chapter 3 “Throttle”.

holds the throttle and the cover with the

In order to remove the heating element

circuit breaker must be removed to

the bolt (A) that holds the throttle and

reach the electrical cables.

cover (B) and the heater switch must

 

 

 

 

 

 

 

 

first be removed (2 bolts).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

502 50 18-01

 

 

The heating element in the throttle is

A heating element is placed in the

accessed when the throttle lock is

throttle lock for involuntary throttling.

pushed out of the throttle.

Press the locking catch from the

Pry off the locking catch and lift out the

throttle, making sure not to lose the

spring (A).

heating element.

 

 

 

Pry off the locking catch (B) and lift out

 

 

the heating element (C).

 

 

 

 

 

NOTE!

 

 

Do not pry off the heating element

 

 

before the locking catch has been

 

 

removed. The element can be

 

 

damaged.

 

 

 

12

Page 12 Page 14
Image 13
Page 12 Page 14
Contents English Workshop Manual Brushcutter, Trimmer Model 343R, 345RX, 343F, 345FX, 345FXT ContentsGeneral recommendations Starter ContentsDismantling 1StarterStarter AssemblyReplacing the drive dogs Electrical system Checking the ignition spark Electrical system502 71 Tip 502 50 Replacing the spark Plug cover502 54 Heated handles Drive dogsWiring diagram Electrical system Fuel system Air filter Fuel systemFuel filter Tank ventingCarburettor Fuel pumpDismantling Metering unit Carburettor’s designBlending unit Dismantling the carburettor Pump unitFuel system For example, the H-needle is a PositionedLittle shorter than the L-needle Assembling the carburettor Than the L-needle H-needle is a little shorterCheck carefully that the fuel hoses Are not bent or pinched whenBasic setting Carburettor settingsFine adjustment Correctly adjusted carburettor Setting Recommended max. speed must not be exceededTachometer should always be used to find the optimal Idling speed T-screwAdjusting the L-needle Adjusting the H-needle Carburettor adjustment 345RX/FXThrottle RotatingCheck for wear on pins a and B Tip Page Centrifugal clutch 502 21 Centrifugal clutchDo not lose the sleeve bearings found in the clutch shoes Centrifugal clutch502 11 Clutch drumChange the bearings in the clutch housing if necessary Page Angle gear Let the small circlip around the axle remain Angle gearInput axle with pinion must be dismantled first 503 97503 80 ShaftCylinder 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 Inlet manifold Cleaning, inspectionInsufficient lubrication Analysis and actionsCause Action Piston scoring caused by heavy carbon deposits Piston ring breakage Piston damage caused by a too high engine speedCause Foreign objectsDefect Action Service tipsWear tolerances Crankshaft and crankcase Crankshaft and crankcase 502 52 Crankshaft and crankcaseInspecting Crankshaft Assembly Press down the sealing plates as Leakage testing CrankcaseFar as possible between the bolts To ensure a proper seal503 55 Husqvarna E-Tech
Top Page Image Contents