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11
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.
BAR
DRIVECASE
COVER
BAR NUT
CHAIN
Fig. 10
DRIVECASE
COVER
CHAIN
TENSIONING PIN
BAR NUT
Fig. 11
BAR STUD SLOT
BAR STUD
CHAIN TENSIONING
PIN HOLE
BAR
SPROCKET
Fig. 12
CHAIN ROTATION
BAR NUT
CHAIN
SPROCKET
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.