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CG 47 EY-T
Инструкция к Hitachi CG 47 EY-T Страница: 15

Hitachi CG 47 EY-T Инструкция к Hitachi CG 47 EY-T онлайн [15/87] 832510

GB-13

Fig.3-3

Spark plug (Fig. 3-3)

The spark plug condition is influenced by:

An incorrect carburetor setting.

Wrong fuel mixture (too much oil in the gasoline)

A dirty air filter.

Hard running conditions (such as cold weather).

These factors cause deposits on the spark plug

electrodes, which may result in malfunction and

starting difficulties. If the engine is low on power,

difficult to start or runs poorly at idling speed,

always check the spark plug first. If the spark plug

is dirty, clean it and check the electrode gap.

Readjust if necessary. The correct gap is 0.6 mm.

The spark plug should be replaced after about

100 operation hours or earlier if the electrodes

are badly eroded.

NOTE!

In some areas, local law requires using a resistor

spark plug to suppress ignition signals. If this

machine was originally equipped with resistor

spark plug, use same type of spark plug for

replacement.

Muffler (Fig. 3-4)

Remove the muffler and clean out any excess

carbon from the exhaust port or muffler inlet every

100 hours of operation.

Cylinder (Engine cooling) (Fig. 3-4B)

The engine is air cooled, and air must circulate

freely around engine and over cooling fins on

cylinder head to prevent overheating.

Every 100 operating hours, or once a year,

(more often if conditions require) clean fins and

external surfaces of engine of dust, dirt and oil

deposits which can contribute to improper cooling.

NOTE!

Do not operate engine with engine shroud or

muffler guard removed as this will cause

overheating and engine damage.

Fig.3-4 Fig.3-4B

Angle transmission (Fig.3-5)

Check angle transmission or angle gear for

grease level about every 50 hours of operation

by removing the grease filler plug on the side of

angle transmission.

If no grease can be seen on the flanks of the

gears, fill the transmission with quality lithium

based multipurpose grease up to 3/4.

Do not completely fill the transmission.

Blade (Fig. 3-6)

WARNING!

Wear protective gloves when handling or

performing maintenance on the blade.

Use a sharp blade. A dull blade is more likely

to snag and thrust. Replace the fastening nut

if it is damaged and hard to tighten.

When replacing blade, purchase one

recommended by HITACHI, with a 25.4mm

(one inch) fitting hole.

When installing saw blade (2), always face the

stamped side up. In the case of a 3 or 4 tooth

blade (1, 3), it can be used on either side.

Use correct blade for the type of work.

When replacing blade, use appropriate tools.

When cutting edges become dull, re-sharpen

or file as shown in figure. Incorrect sharpening

may cause excessive vibration.

Discard blades that are bent, warped, cracked,

broken or damaged in any way.

NOTE!

When sharpening blade it is important to maintain

an original shape of radius at the base of the

tooth to avoid cracking.

Maintenance schedule

Below you will find some general maintenance

instructions. For further information please

contact HITACHI dealer.

Daily maintenance

Clean the exterior of the unit.

Check that the harness is undamaged.

Check the blade guard for damage or cracks.

Change the guard in case of impacts or

cracks.

Check that the cutting attachment is properly

centred, sharp, and without cracks. An off-

centred cutting attachment induces heavy

vibrations that may damage the unit.

Check that the cutting attachment nut is

sufficiently tightened.

Make sure that the blade transport guard is

undamaged and that it can be securely fitted.

Check that nuts and screws are sufficiently

tightened.

Weekly maintenance

Check the starter, especially cord and return

spring.

Clean the exterior of the spark plug.

Remove it and check the electrode gap.

Adjust it to 0.6 mm, or change the spark plug.

Clean the cooling fins on the cylinder and

check that the air intake at the starter is not

clogged.

Check that the angle gear is filled with grease

up to 3/4.

Clean the air filter.

Monthly maintenance

Rinse the fuel tank with gasoline.

Clean the exterior of the carburetor and the

space around it.

Clean the fan and the space around it.

Fig.3-5 Fig.3-6

Hitachi CG 47 EY-T Инструкция к Hitachi CG 47 EY-T онлайн [15/87] 832510

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