McCulloch MAC 740 Bedienerhandbuch PDF herunterladen (Seite 8)

8

Clutch

Cover

Lower

Hole

Guide Bar

Adjusting Pin

12. Install bar nuts and finger tighten only.

Once the chain is tensioned, you will

need to tighten bar nuts.

CHAIN TENSION (Including units

with chain already installed)

WARNING: Wear protective gloves

whenhandlingchain. Thechainis sharpand

can cut you even when it is not moving.

NOTE: When adjusting chain tension,

make sure the bar nuts are finger tight only.

Attemptingto tensionthe chainwhen thebar

nuts are tight can cause damage.

Checking the tension:

Use the screwdriver end of the chainadjust-

ment tool (bar tool) to move chain around

guidebar.If thechaindoesnotrotate,itistoo

tight. Ifthechainistooloose,itwillsagbelow

the bar .

Chain Adjustment

Tool

(Bar Tool)

Guid

e

Bar

Adjusting

Screw

Bar Nuts

Adjusting the tension:

Chain tension is very important. Chains

stretch during use. This is especially true

during the first few times you use your saw.

Always check chain tension each time you

use and refuel your saw.

1. Loosenbar nuts until they are fingertight

against the clutch cover .

2. Turn adjusting screw clockwise until chain

solidly contacts bottom of guide bar rail.

Adjusting

Screw

3. Using bar tool, roll chain around guide bar

to ensure all links are in bar groove.

4. Lift up tip of guide bar to check for sag.

Releasetipofguidebar,thenturnadjust-

ingscrew

1

/

4

turnclockwise. Repeatun-

til sag does not exist.

Adjusting Screw --

1

/

4

Turn

5. While lifting tip of guide bar, tighten bar

nuts securely with the bar tool.

Bar Nuts

6. Usethescrewdriver endofthebar toolto

move chain around guide bar.

7. If chain does not rotate, it is too tight.

Slightly loosenbarnutsandloosenchain

by turning the adjusting screw

1

/

4

turn

counterclockwise. Retighten bar nuts.

8. If chain is too loose, it will sag below the

guidebar.DO NOToperatethesaw ifthe

chain is loose.

WARNING: If the saw is operated

with a loose chain, the chain could jump off

the guide bar and result in serious injury .

WARNING:Mufflerisvery hotduring

and after use. Donot touch the muffleror al-

low combustible material such as dry grass

or fuel to do so.

OPERATING YOUR UNIT

BEFORE STARTING ENGINE

WARNING: Be sure to read the fuel

informationinthesafety rulesbefore yoube-

gin.Ifyoudonot understandthesafetyrules,

do not attempt to fuel your unit. Contact an

authorized service dealer.

BAR AND CHAIN LUB RICATION

The bar and chain require continuous lubri-

cation. Lubrication is provided by the auto-

matic oiler system when the oil tank is kept

filled. Lack of oil will quickly ruin the bar and

chain. Too little oil will cause overheating

shownbysmokecomingfromthechainand/

or discoloration of the bar. Only use Bar and

Chain Oil for bar and chain lubrication.

FUELING ENGINE

WARNING: Remove fuel capslowly

when refueling.

This engine is certified to operate on unleaded

gasoline. Before operation, gasoline must be

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