Ryobi 704r Trimmer User Manual


 
12
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.
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 9
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
MAINTENANCE AND REPAIR INSTRUCTIONS
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.
LINE INSTALLATION
This section covers both SplitLine™ line and standard
single line installation.
Always use Genuine Factory Parts™ 0.080 inch (2.03
mm) replacement line. Using line other than specified
may make the engine overheat or fail.
There are two methods to replace the trimming line:
• Wind the inner reel with new line
• Install a prewound inner reel
Winding the Existing Inner Reel
1. Press the tabs in and remove the bottom cover (Fig. 11).
2. Remove the inner reel from the outer spool (Fig. 12).
3. Use a clean cloth to clean the inner reel.
4. Check the pawl for cracking or pin wear (Fig. 13).
5. If the pawl shows any sign of cracking or has
excessive pin wear, then replace the pawl. Refer to
the Pawl Replacement section.
WARNING: Never use metal-reinforced
line, wire, chain or rope. These can break
off and become dangerous projectiles.
Tab
Bottom Cover
Inner Reel
Outer Spool
Pawl
PRESS TABS
TO REMOVE
Fig. 11
Fig. 12