Mcculloch MCM2013 Bedienungsanleitung PDF herunterladen (Seite 10)

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6 - BAR/CHAIN MAINTENANCE

6-1. GUIDE BAR MAINTENANCE

WARNING

Ensure that the power cord is disconnected before perform-

ing any maintenance on your saw.

Proper maintenance of the guide bar, as explained in

this section, is essential to keep your saw in good

working order.

GUIDE BAR MAINTENANCE :

Most guide bar problems can be prevented merely by keep-

ing the chain saw well maintained.

Incorrect filing and non-uniform cutter and depth gauge set-

tings cause most guide bar problems, primarily resulting in

uneven bar wear. As the bar wears unevenly, the rails

widen, which may cause chain clatter and difficulty in mak-

ing straight cuts.

Insufficient guide bar lubrication and operating the saw with

a chain that is TOO TIGHT will contribute to rapid bar wear

(see Section 6-2).

To help minimize bar wear, the following guide bar mainte-

nance is recommended.

BAR WEAR - Turn guide bar frequently at regular intervals

(for example, after 5 hours of use), to ensure even wear on

top and bottom of bar.

BAR GROOVES - Bar grooves (or rails which support and

carry the chain) should be cleaned if the saw has been

heavily used or if the saw chain appears dirty. Rails should

always be cleaned every time the saw chain is removed.

OIL PASSAGES - Oil passages at bar pad should be

cleaned to ensure proper lubrication of the bar and chain

during operation. This can be done using a soft wire small

enough to insert into the oil discharge hole.

TO CLEAN GUIDE BAR RAILS:

1. Remove sprocket cover, bar and chain (see Section 3-

4).

2. Using a screwdriver, putty knife, wire brush or other

similar instrument, clear residue from the rails on the

guide bar.

This will keep the oil passages open to provide prop-

er lubrication to the bar and chain (Figure 6-1A).

3. Reinstall the bar, chain and bar bolt retaining nuts.

(See Section 3-4).

6-2. CHAIN MAINTENANCE INSTRUCTIONS

WARNING

Unless you have experience and

specialized training for

dealing with kickback (see Safety Precautions), always use

a low-kickback saw chain, which significantly reduces the

danger of kickback. Low-kickback saw chain does not com-

pletely eliminate kickback. A low-kickback or “safety chain”,

should never be regarded as total protection against injury.

A low kick saw chain should always be used in combination

with other kickback protection devises such as a hand

guard and reduced kickback guide bar supplied with the

your unit.

Always use a replacement saw chain designed as “low-

kickback” or a saw chain which meets the low-kickback per-

formance.

A standard saw chain (a chain which does not have the

kickback reducing guard links) should only be used by an

experienced professional chain saw operator.

What is a Low-Kickback Saw Chain?

A low-kickback saw chain is a chain which has met the kick-

back performance requirements of

ANSI B175.1. Do not

use other replacement chain unless it has met these

requirements for your specific model.

By keeping the saw chain in good working condition and

correctly serviced as recommended in this manual, you will

be able to maintain the safety system of your chain saw

over the life of the product.

WARNING

Never remove, modify or make inoperative any safety

device furnished with your unit. The hand guard, reduced

kickback guide bar and low kick back saw chain are major

safety features provided for your protection.

WARNING

Always wear heavy duty protection work gloves and discon-

nect the extension cord when working on the saw chain.

CHAIN TENSION:

Check the chain tension frequently and adjust as often as

necessary to keep the chain snug on the bar, but loose

enough to be pulled around by hand. (See Section 3-5,

Saw Chain Tension Adjustment).

BREAKING IN A NEW SAW CHAIN

A new chain and bar will need readjustment after as few

five (5) cuts.This is normal during the break-in period,

and the interval between future adjustments will begin to

lengthen quickly.

Over a period of time, however, the moving parts of the saw

chain will become worn, resulting in what is called CHAIN

STRETCH. This is normal. When it is no longer possible to

obtain correct chain tension adjustment, a link will have to

be removed to shorten the chain. See your McCulloch

Authorized Service Center to have this repair performed.

WARNING / CAUTION

Never have more than three (3) links removed from a loop of

chain this could cause damage to the sprocket.

7 - PREVENTIVE MAINTENANCE

7-1. PREVENTATIVE MAINTENANCE

WARNING

SERVICING A DOUBLE INSULATED CHAIN SAW

In this double insulated chain saw, 2 systems of insulation,

instead of grounding, are provided. No grounding means is

provided on a double insulated chain saw, nor should a

means for grounding be added to the chain saw. No serv-

iceable parts are inside. A double insulated chain saw is

marked with the words, “DOUBLE INSULATION” or “DOU-

BLE INSULATED”. The symbol (square within a

square) may also be marked on the chain saw.

1. Place switch in OFF position and unplug the power

supply before the chain saw is serviced, cleaned, or

maintenance is performed.

2. Keep the air intake clean and air vents free of debris

to avoid overheating the motor.

3. Clean with a damp sponge and mild soap. Do not

squirt with a water hose or douse with water or other

liquids.

4. Inspect the saw chain for proper tension before each

use

and frequently during cutting. Sharpen as

required.

5. Clean the guide bar and bar pad to ensure free path

for oil.

6. Turn the bar over after each use to achieve even wear.

7. No motor lubrication is necessary. The motor is

equipped with lifetime lubricated bearings.

8. If the saw does not operate, turn switch to OFF posi-

tion and disconnect the extension cord, first from the

power supply, then from the saw. Check the power

supply for blown fuses or tripped circuit breakers. If it

still does not operate, contact the McCulloch Product

Service Department, through the toll-free number list-

ed on the back cover of this manual, for service infor-

mation. Do not attempt to repair it yourself. No serv-

iceable parts are inside.

6-1A

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