Manual McCulloch PM E1900-16 (page 9 of 15) (English, German, Dutch, Danish, French, Italian, Portuguese, Swedish, Turkish, Spanish, Norwegian, Finnish)

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ENGLISH - 6

outside the range of action of the front hand guard

(fig.3).

N.B.: When the chain brake is activated, a safety

switch cuts off all current to the motor.

CHAIN CATCHER

This machine is equipped with a chain catcher (fig.4)

located under the pinion. This mechanism is

designed to arrest the backward chain movement in

the case of chain breaking or derailing. These

situations can be avoided by ensuring correct chain

tension (Refer to chapter “D. Assembly/disassembly”).

REAR HAND GUARD

This acts to protect(fig.5) the hand in the case of

chain breaking or derailing.

D. ASSEMBLY / DISASSEMBLY

2,3,6,7,8,9,12

BAR AND CHAIN ASSEMBLY

Assembly methods change according to the type of your machine- so please take care to refer to the illustrations

and machine type marked on the label (A- Legend – 9 [ES020 / ES021] ), Take great care when assembling to

ensure this is performed correctly.

FOR ES020 FOR ES021

1. Control that the chain brake is not activated. If so, deactivate it.

2a. Unscrew the bar retaining nut and remove

the chain cover.

2b. Unscrew the bar retaining knob and remove the

chain cover.

3. Assemble the bar on the bar retaining screw pushing it as far backward toward the pinion as possible.

Set the chain on the pinion, making it slide into the bar guide groove, beginning with the upper part.

Attention! Check that the sharp side of the cutting teeth face in a frontward direction on the upper part of

the bar.

4a. Set the chain tensioner pin in the chain

tensioner pin housing. Mount the chain cover

making sure that the drive teeth of the chain are

engaged in the pinion and in the guide groove.

4b. Assemble the chain tensioner plate as shown in

figure, setting the chain tensioner pin in the chain

tensioner pin housing.

Make sure that the drive teeth of the chain are

engaged in the pinion and in the guide groove.

Mount the chain cover making sure that it couples

correctly with the chain tensioner plate.

5a. Close the bar retaining nut, screwing by

hand.

5b. Screw the bar retaining knob loosely tightened.

6a. To spread the chain screw the chain

tensioner screws in a clockwise direction, to

loosen tension, screw in an anti-clockwise

direction (when performing this operation

maintain the bar nose raised upwards)

6b. Thighten the chain turning turning the chain

tensioner ring clockwise (when performing this

operation maintain the bar nose raised upwards); to

losen chain tension, turn it counterclockwise. (when

performing this operation maintain the bar nose raised

upwards)

7 Spread the chain until the tension is correct; that is, when the chain is pulled upwards, the drive tooth

rise to the same level as the bar. (the chain must never droop on the underside of the bar)

8a. Tighten the bar retaining nut using an

appropriate tool.

8b. Tighten the bar retaining knob strongly.

Tensioning the chain too tightly will overload the motor and cause damage, insufficient tension can provoke

chain derailing, whereas a chain tightened correctly provides the best cutting characteristics and prolonged work

life. Check the tension regularly because the chain length tends to stretch with use (especially when the chain is

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McCulloch PM E1900-16 Manual

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