Ryobi 2079r Manual do Operador Página 17
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CARBURETOR ADJUSTMENT
The idle speed of the engine is adjustable though the Air
filter/muffler cover (Fig 23).
NOTE: Careless adjustments can seriously damage your
unit. An authorized service dealer should make
carburetor adjustments.
Check Fuel Mixture
Old and/or improperly mixed fuel is usually the reason
for the unit not running properly. Drain and refill the tank
with fresh, properly mixed fuel prior to making any
adjustments. Refer to Oil and Fuel Information, Pg. 9.
Clean Air Filter
The condition of the air filter is important to the
operation of the unit. A dirty air filter will restrict air flow
and change the air/fuel mixture. This is often mistaken
for an out of adjustment carburetor. Check the condition
of the air filter before adjusting the idle speed screw.
Refer to Air Filter Maintenance.
Adjust Idle Speed Screw
WARNING: The cutting attachment may be
spinning during carburetor adjustments. Wear
your protective equipment and observe all
safety instructions. For units equipped with a
clutch, be sure the cutting attachment stops
turning when the engine idles. When the unit is
turned off make sure the cutting attachment
has stopped before the unit is set downIf after
checking the fuel mixture and cleaning the air
filter the engine still will not idle, adjust the idle
speed screw as follows.
1. Start the engine and let it run at a high idle for a
minute to warm up.
2. Release the throttle trigger and let the engine idle. If
the engine stops, turn the idle speed screw in
clockwise with a small phillips or flat blade
screwdriver 1/8 of a turn at a time (as needed), until
the engine idles smoothly (Fig. 23).
MAINTENANCE AND REPAIR INSTRUCTIONS
17
NOTE: The cutting attachment should not rotate when
the engine idles.
3. If the cutting attachment rotates when the engine
idles, turn the idle speed screw counterclockwise 1/8
of a turn at a time (as needed), to reduce idle speed.
Checking the fuel mixture, cleaning the air filter, and
adjusting the idle speed screw should solve most engine
problems.
If not and:
• The engine will not idle,
• The engine hesitates or stalls on acceleration,
• There is a loss of engine power,
have the carburetor adjusted by an authorized service
dealer.
WARNING: When the unit is turned off make
sure the cutting attachment has stopped
before the unit is set down to prevent serious
personal injury.
Idle Speed Screw
Fig. 23
- OPERATOR’S MANUAL 1
- THANK YOU 2
- SPECIFICATIONS 2
- SERVICE INFORMATION 2
- SPARK ARRESTOR 3
- WARNING! 3
- RULES FOR SAFE OPERATION 4
- OIL AND FUEL INFORMATION 9
- STOPPING INSTRUCTIONS 10
- STARTING INSTRUCTIONS 10
- OPERATING INSTRUCTIONS 11
- LINE INSTALLATION 14
- Holding Slots 15
- AIR FILTER MAINTENANCE 16
- CARBURETOR ADJUSTMENT 17
- ACCESSORIES/REPLACEMENT PARTS 18
- REPLACING THE SPARK PLUG 18
- CLEANING AND STORAGE 19
- TROUBLESHOOTING 20
- LIMITED TWO-YEAR WARRANTY 24
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