Ryobi 4 Cycle Trimmer Owners Manual

MAINTENANCE AND REPAIR INSTRUCTIONS
21
CARBURETOR ADJUSTMENT
The idle speed of the engine is adjustable. An idle
adjustment screw is reached though a hole in the top of
the engine cover (Fig 37).
NOTE:Careless adjustments can seriously damage your
unit. An authorized service dealer should make
carburetor adjustments.
Check Fuel
Old fuel is usually the main reason for the unit not 
running properly. Drain and refill the tank with clean,
fresh unleaded fuel prior to doing any adjustments. Refer
to 
Oil and...

MAINTENANCE AND REPAIR INSTRUCTIONS
22
4. Disconnect the spark plug wire.
5. Clean dirt from around the spark plug. Remove the
spark plug from the cylinder head by turning a 5/8 in.
socket counterclockwise.
6. Remove the engine cover (Fig. 39).
7. Clean dirt from around the rocker arm cover.
Remove the screw holding the rocker arm cover with
a large flat blade screwdriver or Torx T25 bit 
(Fig. 41). Remove the rocker arm cover and gasket. 3. Remove the screw behind the engine cover (Fig. 40).
Remove...

MAINTENANCE AND REPAIR INSTRUCTIONS
23
10. If the clearance is not within specification:
a. Turn the adjusting nut using a 5/16 inch (8 mm)
wrench or nut driver (Fig. 42).
•To increase clearance, turn the adjusting nut 
counterclockwise.
•To decrease clearance, turn the adjusting nut 
clockwise.
b. Recheck both clearances, and adjust as necessary.
11. Reinstall the rocker arm cover using a new gasket.
Torque the screw to 20–30 in
•lb (2.2–3.4 N•m).
NOTE:A rocker arm cover gasket, Part # 182099 can be...

MAINTENANCE AND REPAIR INSTRUCTIONS
24
ACCESSORIES/REPLACEMENT PARTS
4-Cycle Oil  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181786
Oil Fill Plug / Dipstick  . . . . . . . . . . . . . . . . . . . . . 182378
Spark Plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180852
Spark Arrestor Screen . . . . . . . . . . . . . . . . . . . . . 180890
Replacement Line Cartridge  . . . . . . . . . . . . . . . . 181460
Inner Reel Spring  . . . . . . . . . . . . . . . . . . . . . . . ....

CLEANING AND STORAGE
25
LONG TERM STORAGE
If the unit will be stored for an extended time,
1. Drain all gasoline from the gas tank into a container .
Do not use gas that has been stored for more than
60 days. Dispose of the old gasoline in accordance
to Federal, State, and Local regulations.
2. Start the engine and allow it to run until it stalls. This
ensures that all gasoline has been drained from the 
carburetor.
3. Allow the engine to cool. Remove the spark plug and
put 1 oz. (30 ml) of high quality...

TROUBLESHOOTING
26
CAUSE ACTION
Oil in cutting head  Clean the cutting attachment 
If further assistance is required, contact your authorized service dealer.  CAUSE ACTION
Cutting head bound with grass Stop the engine and clean cutting attachment
Cutting head out of line Refill with new line
Inner reel bound up Replace the inner reel
Cutting head dirty Clean inner reel and outer spool
Line welded Disassemble, remove the welded section 
and rewind the line
Line twisted when refilled Disassemble and rewind...

SPECIFICATIONS
27
ENGINE
Engine Type  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Air-Cooled, 4-Cycle
Displacement  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.6 cu. in. (26.2 cc)
Clutch Type  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

NOTES
28 

29
The California Air Resources Board and Ryobi
Outdoor Products (ROP), are pleased to explain the
emission control system warranty on your 2000 and
later small off-road engine. In California, new small
off-road engines must be designed, built and
equipped to meet the States stringent anti-smog
standards. ROP must warrant the emission control
system on your small off-road engine for the periods
of time listed below provided there has been no
abuse, neglect or improper maintenance of your small
off-road...

ALL IMPLIED WARRANTIES ARE LIMITED IN 
DURATION TO THE TWO (2) YEAR WARRANTY 
PERIOD OR NINETY (90) DAYS FOR PRODUCTS
USED FOR ANY COMMERCIAL PURPOSE. 
ACCORDINGLY, ANY SUCH IMPLIED WARRANTIES
INCLUDING MERCHANTABILITY, FITNESS FOR A
PARTICULAR PURPOSE, OR OTHERWISE, ARE 
DISCLAIMED IN THEIR ENTIRETY AFTER THE 
EXPIRATION OF THE APPROPRIATE TWO-YEAR 
OR NINETY DAY WARRANTY PERIOD. RYOBI’S
OBLIGATION UNDER THIS WARRANTY, IS STRICTLY
AND EXCLUSIVELY LIMITED TO THE REPAIR OR
REPLACEMENT OF DEFECTIVE PARTS,...