7
SPECIFICATIONS*
* All specifications are based on the latest product information available at the time of printing. We reserve the right to make changes at any
time without notice.
Engine Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Air-Cooled, 2-Cycle
Displacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 cc (2.8 cu. in.)
Spark Plug Gap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.025 in. (0.635 mm)
Spark Plug. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Champion® RCJ6Y or equivalent plug
Lubrication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bar and Chain Oil
Fuel/Oil Ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40:1
Fuel Tank Capacity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 oz. (650 mL)
Chain Oil Reservoir Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.45 oz. (250 mL)
Approximate Unit Weight (without fuel or chain oil) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 - 15 lbs. (6.3 - 6.8 kg)
Guide Bar Length (RM4618) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 in. (45.7 cm)
Guide Bar Length (RM4620) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 in. (50.8 cm)
Saw Chain Pitch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.325 in. (8.3 mm)
Saw Chain Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.050 in. (1.3 mm)
SAFETY FEATURES
•
LOW-KICKBACK SAW CHAIN significantly reduces the chance of kickback and the intensity of kickback, due to specially designed
depth gauges and guard links.
• The
SPARK ARRESTER SCREEN retains carbon and other flammable particles over 0.023 inches (0.6mm) in size from the engine
exhaust flow. Compliance with local, state and federal laws and/or regulations governing the use of a spark arrester screen is the user’s
responsibility. Refer to Spark Arrestor Note in the Safety section for additional information.
• The
CHAIN BRAKE LEVER / FRONT HAND GUARD helps protect the operator’s left hand if it slips off the front handle while the unit is
running. The chain brake lever is also used to manually engage the chain brake.
• The
CHAIN BRAKE reduces the chance of injury if kickback occurs, by stopping the saw chain in milliseconds. The chain brake is
designed to engage automatically in response to kickback. The chain brake can also be activated by pushing the chain brake lever
forward, either intentionally or if the operator’s hand strikes the lever during kickback.
• The
ON/OFF SWITCH immediately stops the engine when moved to the OFF position. The On/Off switch must be moved to the On
position to start the engine.
• The
THROTTLE LOCKOUT prevents accidental acceleration of the engine. The throttle control cannot be squeezed unless the throttle
lockout is depressed.
• The
CHAIN CATCHER reduces the chance of injury if the saw chain breaks or derails during operation. The chain catcher is designed to
intercept a whipping chain.
REPLACEMENT PARTS
Please contact the Customer Support Department to order replacement parts.
Replacement Part #
753-08242 . . . . . . . . . . . . . . . . . . . . . . . . . . .
753-08102 . . . . . . . . . . . . . . . . . . . . . . . . . . .
753-08241 . . . . . . . . . . . . . . . . . . . . . . . . . . .
753-08101 . . . . . . . . . . . . . . . . . . . . . . . . . . .
753-08105 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Description
Saw Chain (18 in. / 45.7 cm)
Saw Chain (20 in. / 50.8 cm)
Guide Bar (18 in. / 45.7 cm)
Guide Bar (20 in. / 50.8 cm)
Bar-Retaining Nuts
Accessory #
RMH72 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RMH78 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RM18SH72 . . . . . . . . . . . . . . . . . . . . . . . . . .
RM20SH78 . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Summary of Contents for RM4618
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