Product Manual
29
OREGON® Cordless Tool System 
CHAIN SAW MODEL CS300
MAINTENANCE AND CLEANING 
AA 1214 - F/N 573259
MAINTENANCE AND CLEANING 
 WARNING: FAILURE TO IDENTIFY 
AND REPLACE DAMAGED OR 
WORN PARTS CAN CAUSE SERIOUS 
PERSONAL INJURY. INSPECT THE 
CHAIN SAW REGULARLY. REGULAR 
INSPECTION IS THE FIRST STEP TO 
PROPER MAINTENANCE. FOLLOW THE 
GUIDELINES BELOW TO MAXIMIZE 
SAFETY AND SATISFACTION. HAVE 
ANY DAMAGED OR EXCESSIVELY 
WORN PARTS REPLACED 
IMMEDIATELY.
 WARNING: A BATTERY OPERATED 
TOOL WITH THE BATTERY PACK 
INSERTED IS ALWAYS ON AND CAN 
START ACCIDENTALLY. REMOVE THE 
BATTERY PACK FROM THE CHAIN SAW 
BEFORE INSPECTING, CLEANING, OR 
PERFORMING MAINTENANCE.
 CAUTION: WHEN CLEANING THE 
CHAIN SAW, DO NOT IMMERSE IN 
WATER OR OTHER LIQUIDS. 
INSPECTION
Before each use and if the chain saw has 
been dropped, inspect these parts:
• Handles: Front and rear handles should 
not have cracks or other damage. They 
should be clean and dry.
• Front Hand Guard: The front hand guard 
should be free of damage and able 
to move easily back and forth. When 
moved, the front hand guard should 
activate the chain brake.
• Guide Bar: The bar should be straight 
and free of chips, cracks or excessive 
wear.
• Saw Chain: The chain should be 
properly tensioned and sharp and 
all components free of cracks, chips, 
broken teeth or excessive wear. See 
“Tensioning the Saw Chain” and 
“Sharpening with PowerSharp®”.
• Side Cover: The side cover should be 
free of cracks or other damage. It should 
fit tightly to the saw body with no 
warping. Make sure the chain catcher is 
free of cracks.
• Battery Pack: The battery pack should 
be clean, dry, with no signs of puncture, 
impact, or other damage. The contacts 
should be clean, dry and free of debris.
• Battery Port: The battery port and 
contacts should be clean, dry, and free 
of debris.
• Chain Brake: Test the chain brake to 
make sure it is functioning properly. See 
“Testing the Chain Brake” under “General 
Operation”.
• Oil Level: Make sure the oil reservoir is 
full before use. See “Filling the Bar and 
Chain Oil Reservoir”.
• Automatic Oiler: When the chain saw 
is running without the guide bar and 
saw chain attached, a small amount of 
oil should seep from the hole in the bar 
pad. See “Priming the Oiler”.
• Motor Cover: Check for cracks in the 
cover and debris in the air intake vents.
Periodically inspect these parts:
• Drive Sprocket: Look for deep grooves, 
broken teeth or burrs.
• Chain Tensioning Gear: Inspect the gear 
for cracks, chips, loose screw, warping or 
other damage.
• Bar-Mounting Area Underneath Side 
Cover: Make sure the mounting stud 
is not bent, stripped or cross-threaded 
and that the bar pad and alignment 
flange are free of debris and intact.
• Charger: The charger should be clean, 
dry, and free of punctures or other 
damage. The battery tray and contacts 
should be free of debris.










