Nilfisk-ALTO 91WS Service Instructions, C0617, Engine Air Intake Service, Fuel Filter Service

SERVICE INSTRUCTIONS

ENGINE SERVICE INSTRUCTIONS

COVER

SCREWS (2)

CARTRIDGE

PRE-CLEANER

TABSLOTBASE

	COVER
	RETAINER
	C-0617
C0617	FIGURE 19

WARNING

To prevent accidental starting, remove spark plug wire when servicing engine or equipment. Disconnect the

battery at the negative terminal if the engine has an electric starting system.

NOTE

Check the oil level regularly. Be sure correct oil level is maintained. Check every five (5) hours or daily before

starting the engine.

NOTE

Check the oil per the Service Chart Instructions previously listed. Change the oil after the five (5) hours of opera-

tion. Change the oil while the engine is warm. Refill with new oil of a recommended grade.

ENGINE AIR INTAKE SERVICE

1.Loosen the cover screws. Remove the cover and air cleaner assembly from the base.

2.Remove the air cleaner assembly from the inside of the cover and disassemble.

3.To service the pre-cleaner, wash in a liquid detergent and water. Squeegee dry in a clean cloth. Saturate the pre-cleaner in engine oil and use a clean, absorbent cloth to remove ALL EXCESS oil. If the pre-cleaner is very dirty or damaged, replace it.

WARNING

Do not use petroleum solvents, e.g. kerosene, nor pressurized air, to clean the cartridge. Solvents will cause the

cartridge to deteriorate. Pressurized air can damage the cartridge.

4.Reassemble the retainer on the pre-cleaner and cartridge (screen side of pre-cleaner toward cartridge pleats). Install this assembly in cover.

5.Insert tabs on cover into slots in base. Tighten cover screws securely.

FUEL FILTER SERVICE

The engine is equipped with an in-line fuel filter. As the in-line fuel filter is disposable, the only service required is replacement every 100 hours. For more information regarding the fuel filter system, refer to the Briggs & Stratton Owner’s Manual included with this Operator’s Manual.

1-28	American-Lincoln
	91 WS