Wacker Neuson BH 23 Betreibershandbuch PDF herunterladen (Seite 29)

Maintenance

T00932GB 27

6.4 Assembly instructions

Disassembly

6.4.1 Percussion system

Remove both necked-down screws. Now tool holder and guide

cylinder can be removed. To remove the percussion system (striker

piston and guide piston with connecting rod) detach connecting rod in

crankcase. Attention! The connecting rod can only be disassembled if

the bearing flange has been removed.

6.4.2 Engine hood and tank

First remove the fuel cock lever by pulling it off. Remove the two

securing nuts holding down the air filter and then pull off the filter.

Disconnect the Bowden cable at the carburettor flange and pull off fuel

hose from the carburettor. Then proceed to remove the 4 screws

holding down the fuel tank and the 5 screws of the engine hood halves.

Then pull hood halves off the trunions of the spring mounting arms.

6.4.3 Oscillating suspension unit

Unhook springs, remove studs.

6.4.4 Engine

The engine can only be taken off the crankcase if the tank and the

engine hood have been previously taken off. Remove the 3 fastening

screws and pull engine with centrifugal clutch from the crankcase.

6.4.5 Starter

∗ Detach starter from engine.

∗ Remove hexagon nut, remove elastic washer and guide disk.

∗ Remove torsion spring, catch.

∗ Wind up starter rope anti-clockwise and place return spring under

tension by 1-2 rotations of the rope sheave.

∗ Remove rope sheave and return spring.

Access to the ignition system

Remove raised countersunk head screw, remove fan hood with

starter, remove the ignition armature by loosening the screws. Use

extractor to remove fan wheel.

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Wacker Neuson BH 23 Betreibershandbuch Seite 29