MTD YM320BV MAINTENANCE AND REPAIR INSTRUCTIONS, REFER TO, FREQUENCY, MAINTENANCE SCHEDULE, MAINTENANCE REQUIRED, AIR FILTER MAINTENANCE, Cleaning the Air Filter

MAINTENANCE AND REPAIR INSTRUCTIONS

MAINTENANCE SCHEDULE

Perform these required maintenance procedures at the frequency stated in the table. These procedures should also be a part of any seasonal tune-up.

NOTE: Some maintenance procedures may require special tools or skills. If you are unsure about these procedures take your unit to any non-road engine repair establishment, individual or authorized service dealer.

WARNING: To prevent serious injury, never perform

maintenance or repairs with unit running. Always service and repair a cool unit. Disconnect the spark plug wire to ensure that the unit cannot start.

NOTE: Maintenance, replacement, or repair of the emission control devices and system may be performed by any non-road engine repair establishment, individual or authorized service dealer.

In order to assure peak performance of your engine, inspection of the engine exhaust port may be necessary after 50 hours of operation. If you notice lost RPM, poor performance or general lack of acceleration, this service may be required. If you feel your engine is in need of this inspection, refer service to any non-road engine repair establishment, individual or authorized service dealer for repair. DO NOT attempt to perform this process yourself as engine damage may result from contaminants involved in the cleaning process for the port.

FREQUENCY	MAINTENANCE REQUIRED	REFER TO
Before starting engine	Fill fuel tank with fresh fuel	Page 11
Every 10 hours	Clean and re-oil air filter	Page 15
Every 25 hours	Check and clean spark arrestor	Page 16
	Check spark plug condition and gap	Page 17
Every 50 hours	Inspect exhaust port and spark arrestor screen for clogging or	Page 16
	obstruction to assure maximum performance levels

AIR FILTER MAINTENANCERemoving the Air Filter/Muffler Cover

WARNING: To avoid serious personal injury,

always turn your unit off and allow it to cool before you clean or service it.

1. Place the choke lever in Position 2.

NOTE: The choke lever must be in Position 2 to remove the air filter/ muffler cover.

2.Remove the four (4) screws securing the air filter/muffler cover (Fig. 17). Use a flat blade or T-20 Torx bit screwdriver.

3.Pull the cover from the engine. Do not force.

Choke Lever

Position 2

Screws Screws

Cleaning the Air Filter

Clean and re-oil the air filter every 10 hours of operation. It is an important item to maintain. Failure to maintain the air filter will VOID the warranty.

1.Remove air filter/muffler cover. Refer to Removing the Air Filter/Muffler Cover.

2.Turn cover over and look inside to locate the air filter. Remove the air filter from inside the air filter/muffler cover (Fig. 18).

3.Wash the filter in detergent and water (Fig. 19). Rinse the filter thoroughly. Squeeze out excess water. Allow it to dry completely.

Air Filter

Inside Muffler

Cover

Fig. 18 Fig. 19

Fig. 17

15