Poulan Pro PR5020 Manual De Instrucciones página 14

CHECK FOR LOOSE FASTENERS AND
PARTS
• Bar Nuts
• Chain
• Muffler
• Cylinder Shield
• Air Filter
• Handle Screws
• Vibration Mounts
• Starter Housing
• Front Hand Guard
CHECK CHAIN SHARPNESS
A sharp chain makes wood chips. A dull chain makes
a sawdust powder and cuts slowly. See CHAIN
SHARPENING.
GUIDE BAR
Conditions which require guide bar maintenance:
• Saw cuts to one side or at an angle.
• Saw has to be forced through the cut.
• Inadequate supply of oil to bar/chain.
Check the condition of guide bar each time chain is
sharpened. A worn guide bar will damage the chain
and make cutting difficult.
After each use, ensure ON/STOP switch is in the
STOP position, then clean all sawdust from the guide
bar and sprocket hole.
To maintain guide bar:
1. Move ON/STOP switch to STOP.
2. Loosen and remove bar nuts and clutch cover.
Remove bar and chain from saw.
3. Clean the oil holes (A) and bar groove (B).
4. Burring of guide bar rails is a normal process of rail
wear. Remove these burrs with a flat file.
5. When rail top is uneven, use a flat file to restore
square edges and sides.
Replace guide bar when the groove is worn, the guide
bar is bent or cracked, or when excess heating or
burring of the rails occurs. If replacement is necessary,
use only the guide bar specified for your saw in
the repair parts list or on the decal located on the
chainsaw.
CHECK FUEL MIXTURE LEVEL
See FUELING ENGINE under the OPERATION
section.
LUBRICATION
See GUIDE BAR AND CHAIN OIL under the
OPERATION section.
INSPECT AND CLEAN THE UNIT AND
DECALS
After each use, inspect complete unit for loose or
damaged parts. Clean the unit and decals using a
damp cloth with a mild detergent.
Wipe off unit with a clean dry cloth.
CHECK THE CHAIN BRAKE
See CHAIN BRAKE in the OPERATION section.
CLEAN AIR FILTER
a WARNING: Do not clean filter in gasoline or
other flammable solvent to avoid creating a
fire hazard or producing harmful emissions.
A dirty air filter decreases the life and performance
of the engine and increases fuel consumption and
harmful emissions. Always clean your air filter after
10 tanks of fuel or 5 hours of operation, whichever
comes first. Clean more frequently in dusty conditions.
A used air filter can never be completely cleaned. It is
advisable to replace your air filter with a new one after
every 50 hours of operation, or annually, whichever
comes first.
1. Loosen knob on air filter cover. Remove air filter
cover.
2. Press down on wire clamp to release air filter.
Remove air filter.
3. Clean the air filter using hot soapy water. Rinse
with clean cool water. Air dry completely before
reinstalling.
4. Reinstall air filter and reposition wire clamp.
NOTE: Ensure air filter is correctly installed and
fully seated in pocket before repositioning wire
clamp and reinstalling air filter cover.
5. Reinstall air filter cover. Tighten knob securely.
INSPECT MUFFLER AND SPARK
ARRESTING SCREEN
As the unit is used, carbon deposits build up on the
muffler and spark arresting screen, and must be
removed to avoid creating a fire hazard or affecting
engine performance.
Replace the spark arresting screen if breaks occur.
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