MAINTENANCE
WARNING:
When servicing, use only identical replacement parts. Use of any other parts may create a hazard or cause product damage.
WARNING:
Always wear safety goggles or safety glasses with side shields during power tool operation or when blowing dust. If operation is dusty, also wear a dust mask.
WARNING:
Before inspecting, cleaning, or servicing the unit (except for carburetor adjustments), shut off engine, wait for all moving parts to stop, and disconnect spark plug wire and move it away from spark plug. Failure to follow these instructions can result in serious personal injury or property damage.
GENERAL MAINTENANCE
Avoid using solvents when cleaning plastic parts. Most plastics are susceptible to damage from various types of commercial solvents and may be damaged by their use. Use clean cloths to remove dirt, dust, oil, grease, etc.
WARNING:
Do not at any time let brake fluids, gasoline, petroleum- based products, penetrating oils, etc., come in contact with plastic parts. Chemicals can damage, weaken, or destroy plastic, which may result in serious personal injury.
Only the parts shown on the parts list are intended to be repaired or replaced by the customer. All other parts should be replaced at an authorized service center.
WARNING:
To avoid possible serious injury, never touch or adjust the chain while the motor is running. The chain is very sharp; always wear protective gloves when performing maintenance to the chain.
REPLACING THE BAR AND CHAIN
See Figures 10 - 15.
Replacement Bar Part Number: 678375001
Replacement Chain Part Number: 690583003
WARNING:
To avoid possible serious injury, stop engine before replacing the bar, chain, or performing any maintenance operation.
CHAIN | BAR | BAR NUT | DRIVECASE | |
COVER | ||||
|
|
Fig. 10
DRIVECASE
COVER
CHAIN
TENSIONING PIN
BAR NUT 
Fig. 11
SPROCKET
BAR | BAR STUD SLOT |
|
BAR STUD
CHAIN TENSIONING
PIN HOLE
Fig. 12
CHAIN | CHAIN ROTATION |
|
SPROCKET
BAR NUT
Fig. 13
Remove the bar nut and drivecase cover.
The bar contains a bar stud slot that fits over the bar stud.
The bar also contains a chain tensioning pin hole which fits over the chain tensioning pin.
11