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Efco MT4400 Manual

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72 73 74 75
Italiano English Français
MANUTENZIONE MAINTENANCE ENTRETIEN
FILTRO ARIA - Ruotare il pomello (A, Fig. 72) e controllare
giornalmente il filtro aria (B). Pulire con sgrassante Emak cod.
001101009A, lavare con acqua e soffiare a distanza con aria
compressa dall'interno verso l'esterno. Sostituire il filtro se è
fortemente intasato o danneggiato.
ATTENZIONE! - Quando si rimonta il filtro (B), incastrarlo bene
nel suo alloggiamento nel coperchio (C).
FILTRO CARBURANTE - Verificare periodicamente le condizioni del
filtro carburante. In caso di sporcizia eccessiva, sostituirlo (Fig. 73).
POMPA OLIO (automatica regolabile) - La portata è preregolata
di fabbrica. L’erogazione dell’olio può essere variata dall’operatore,
a seconda delle esigenze, tramite l’apposita vite di registro (Fig. 74).
La portata dell’olio avviene solo con la catena in movimento.
ATTENZIONE - Non utilizzare mai olio di recupero.
GRUPPO AVVIAMENTO - Tenere libere e pulite le feritoie
di raffreddamento del carter gruppo avviamento (Fig. 75) con
pennello o aria compressa.
MOTORE / VALVOLA DI DECOMPRESSIONE - Pulire
periodicamente le alette del cilindro con pennello o aria compressa
(Fig. 76). L’accumulo di impurità sul cilindro può provocare
surriscaldamenti dannosi per il funzionamento del motore.
Controllare e pulire eventuali impurità alla base della valvola di
decompressione; potrebbe rimanere aperta.
CANDELA - Ruotare il pomello (A, Fig. 72) e controllare
giornalmente la candela. Si raccomanda la pulizia della candela e il
controllo della distanza degli elettrodi (Fig. 77).
Utilizzare candela NGK CMR7A o di altra marca di grado termico
equivalente.
FRENO CATENA - Nel caso il freno catena non funzioni
correttamente, smontare il carter copricatena e pulire a fondo i
componenti del freno. Quando il nastro del freno catena è usurato
e/o deformato, sostituirlo (A, Fig. 78).
Verificare e sostituire se necessario, l’arresto di sicurezza della
catena (B, Fig. 78).
BARRA - Ruotare la barra e verificare che i fori di lubrificazione
siano liberi da impurità (Fig. 79).
AIR FILTER - Rotate the knob (A, Fig. 72) and check the air filter (B)
each day. Clean with Emak degreaser p/n 001101009A, rinse with
water and blast dry with compressed air, not too close, blowing
from the inside outwards. Renew the filter if heavily clogged or
damaged.
WARNING! – When refitting the air filter (B), fit it into the
cover (A) well, before reassembly.
FUEL FILTER - Check the fuel filter periodically. Replace it if too
dirty (Fig. 73).
OIL PUMP (automatic/adjustable) - Flow adjustment is pre-set
by the manufacturer. Oil flow can be adjusted by the operator
according to specific requirements by means of the special
adjusting screw (Fig. 74). Oil flow occurs only when the chain is
moving.
WARNING - Never use scavenge oil.
STARTING UNIT - Use a brush or compressed air to keep the
cooling louvers of the starter assembly free and clean (Fig. 75).
ENGINE / DECOMPRESSION VALVE - Clean the cylinder fins
(Fig. 76) with compressed air or a brush periodically. Dangerous
overheating of engine may occur due to impurities on the cylinder.
Check the base of the decompression valve; clean away any
residues, which could cause the valve to stay open.
SPARK PLUG - Rotate the knob (A, Fig. 72) and check the spark
plug each day. Clean the spark plug and check the electrode gap
(Fig. 77).
Use NGK CMR7A or of other brand with the same thermal grade.
CHAIN BRAKE - If the chain brake does not work properly, remove
the chain cover and the clean brake components. Replace the chain
brake band if worn or deformed (A, Fig. 78).
Check and, if necessary, replace the chain safety stop (B, Fig. 78).
GUIDE BAR - Turn the guide bar and check that the lubrication
holes are free from impurities (Fig. 79).
FILTRE A AIR - Tourner le pommeau (A, Fig. 72) et contrôlez tous
les jours le filtre à air (B). Nettoyer avec du dégraissant Emak cod.
001101009A, laver avec de l'eau et souffler à distance avec de l'air
comprimé de l'intérieur vers l'extérieur. Remplacer le filtre s'il est
fortement colmaté ou endommagé.
ATTENTION! - Lors du remontage du filtre (B), s’assurer de le
faire entrer parfaitement dans son logement du couvercle (C).
FILTRE CARBURANT - Vérifiez périodiquement les conditions du
filtre carburant; s’il est trop sale, mieux vaut le changer. (Fig.73).
POMPE A HUILE (automatique réglable) - Le débit est préréglé
à l’usine. L’opérateur peut varier la distribution de l’huile selon
les exigences, au moyen de la vis de réglage (Fig.74). Il n’y a débit
d’huile que lorsque la chaîne est en mouvement.
ATTENTION - N’utilisez jamais d’huile de récupération.
GROUPE DEMARREUR - Veillez à ce que les fentes de
refroidissement du carter du groupe démarreur soient toujours
dégagées (Fig.75). Utilisez un pinceau ou de l’air comprimé.
MOTEUR / VALVE DE DÉCOMPRESSION - Nettoyez régulièrement
les ailettes du cylindre à l’aide d’un pinceau ou d’air comprimé
(Fig. 76). L’accumulation d’impuretés sur le cylindre peut provoquer
des surchauffes nuisibles au bon fonctionnement du moteur.
Contrôler et nettoyer les impuretés éventuelles qui se seraient
déposées à la base de la valve de décompression; celle-ci pourrait
rester ouverte.
BOUGIE - Tourner le pommeau (A, Fig. 72) et contrôlez tous les
jours le bougie. Il est recommandé de nettoyer la bougie et de
contrôler la distance entre les électrodes (Fig.77).
Utiliser une bougie NGK CMR7A ou autre marque avec degré
thermique équivalent.
FREIN DE CHAINE - Si le frein de chaîne ne fonctionne pas bien,
démontez le carter protège-chaîne et nettoyez à fond les éléments
du frein. Lorsque le ruban du frein de chaîne est usé et/ou déformé,
remplacez-le (A, Fig.78).
Vérifiez et, si cela s’avère nécessaire, remplacez l’arrêt de sûreté de
la chaîne (B, Fig.78)
GUIDE - Tournez le guide et vérifiez que les trous de lubrification
sont dégagés d’éventuelles impuretés (Fig.79).
… 36 …


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