909 DYM-1773 Manual de instruções - Página 12

Procurar online ou descarregar pdf Manual de instruções para Cortador de relva 909 DYM-1773. 909 DYM-1773 16 páginas. 135cc petrol lawn mower

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9.2 Cutting blade

CAUTION:

Be sure to disconnect and ground the spark

plug wire before working on the cutting blade to prevent

accidental engine starting. Protect hands by using heavy

gloves or a rag to grasp the cutting blades .lip mower as

specified in separate engine manual. Remove the hex bolt

and washer which hold the blade and blade adapter to the

engine crankshaft. Remove the blade and adapter from the

crankshaft.

WARNING:

Periodically inspect the blade adapter for

cracks, especially if you strike a foreign object. Replace

when necessary. For best results your blade should be

sharp. The blade may be resharpened by removing it and

either grinding or filing the cutting edge keeping as close to

the original bevel as possible. It is extremely important that

each cutting edge receives an equal amount of grinding to

prevent an unbalanced blade. Improper blade balance will

result in excessive vibration causing eventual damage to

the engine and mower. Be sure to carefully balance blade

after sharpening. The blade can be tested for balance by

balancing it on a round shaft. saewdriver. Remove metal

from the heavy side until it balances evenly.

Before reassembling the blade and the blade adapter to the

unit, lubricate the engine crankshaft and the inner surface of

the blade adapter with light oil. Install the blade adapter on

the crankshaft. Refer to figure 13. Place the blade with the

part number facing away from the adapter.

Align the washer over the blade and insert the hex bolt.

lighten the hex bolt to the torque listed below:

Flat Key

Blade Adapter

Blade

9.3 Blade mounting torque

Center Bolt 40Nm-50Nm. to insure safe operation of your

unit. ALL nuts and bolts must be checked periodically for

correct tightness.

After prolonged use, especially in sandy soil conditions,

the blade will become worn and lose some of the original

shape. Cutting efficiently will be reduced and the blade

should be replaced. Replaca with an approved factory

replacement blade only. Possible damage resuffing from

blade unbalance condition is not the responsibility of the

manufacturer.

When you change the blade, Must use the original type

marked on the blade (26300100401 for DYM1773); (for

order the blade, pis. contact your local dealer or call our

company)

9.4 Engine

Refer to the separate engine manual for engine

maintenance instructions. Maintain engine oil as instructed

in the separate engine manual packed with your unit. Read

and follow instructions carefully.

Service air cleaner as per separate engine manual under

normal conditions.

Clean every few hours under extremely dusty conditions.

Poor engine performance and flooding usually indicates that

the air cleaner should be serviced.

To service the air cleaner, refer to the separate engine

manual packed with your unit.

The spark. plug should be cleaned and the gap reset once

a season. Spark plug replacement is recommended at the

start of each mowing season; check engine manual for

correct plug type and gap specifications.

Clean the engine regularly with a cloth or brush. Keep the

cooling system (blower housing area) clean to permit proper

air circulation which is essential to engine performance and

Washer

life. Be certain to remove all grass, dirt and combustible

Hex Bolt

debris from muffler area.