McCulloch CS 50S - CHECK CHAIN SHARPNESS; CHECK FUEL MIXTURE LEVEL; LUBRICATION; CLEAN AIR FILTER

CHECK FOR LOOSE FASTENERS AND
PARTS
 Bar Nuts
 Chain
 0XIÀHU
 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
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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.
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4. Burring of guide bar rails is a normal process of rail
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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,
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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
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of the engine and increases fuel consumption and
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10 tanks of fuel or 5 hours of operation, whichever
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every 50 hours of operation, or annually, whichever
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cover.
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with clean cool water. Air dry completely before
reinstalling.
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fully seated in pocket before repositioning wire
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INSPECT MUFFLER AND SPARK
ARRESTING SCREEN
As the unit is used, carbon deposits build up on the
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engine performance.
Replace the spark arresting screen if breaks occur.
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