MTD TB320BV - Manual (Page 15)

15
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. Call 1-800-520-5520
for more information.
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
Check spark plug condition and gap Page 16
Page 17
Every 50 hours
Inspect exhaust port and spark arrestor screen for clogging or
obstruction to assure maximum performance levels
Page 16
AIR FILTER MAINTENANCE
Removing the Air Filter/Muffler Cover
1. Remove the four (4) screws securing the air
filter/muffler cover (Fig. 17). Use a T20 Torx bit
screwdriver.
2. Pull the cover from the engine. Do not force.
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
your air filter properly can result in poor performance or
can cause permanent damage to your engine.
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.
Fig. 17
Fig. 18 Fig. 19
Air Filter
Inside Muffler
Cover
To avoid serious
personal injury,
always turn your unit off and allow it to cool
before you clean or service it.
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.
WARNING:
Screws Screws
Blue EZ-Start™
Lever