WARNING:
To prevent serious injury, never perform
maintenance on the unit while it is running. Always
disconnect the unit from the power source to prevent the
unit from starting accidentally. Always allow the unit to cool
before maintaining the unit.
WARNING:
Wear protective clothing and observe all
safety instructions to prevent serious personal injury.
MAINTENANCE SCHEDULE
Perform these required maintenance procedures at the frequency
stated in the table. These procedures should also be a part of any
seasonal tune-up.
All service, other than the maintenance procedures described in
this manual, should be performed by an authorized service center.
NOTE: Some maintenance procedures may require special tools or
skills. If you are unsure about these procedures, take the unit to
an MTD authorized service center.
ADDING BAR AND CHAIN OIL
DANGER:
Failure to fill the chain oil reservoir will cause
irreparable damage to the unit. Make sure the chain oil
reservoir is always filled. Always use bar and chain oil.
WARNING:
Check the chain oil level frequently so that it
does not drop below half full.
The guide bar and saw chain require lubrication to minimize friction.
Never starve the guide bar and chain of lubricating oil. Running the
unit without enough oil will decrease cutting efficiency, shorten the
life of the saw chain, cause rapid dulling of the saw chain and
excessive wear to the guide bar from overheating. An insufficient
amount of lubricating oil is evidenced by smoke, guide bar
discoloration or pitch build-up.
Only use bar and chain oil that is formulated to perform over a wide
range of temperatures with no diluting required in the chain oil
reservoir. Do not use motor oil or any other petroleum-based oil. Do
not use dirty, used or contaminated oil. Damage may occur to the
guide bar or saw chain. Dispose of old oil according to federal, state
and local regulations.
Checking the Chain Oil Level
1. Set the unit on a flat, level surface.
2. Look into the chain oil level window. The oil level should fill the
window at least halfway (Fig. 25). If the oil level is too low, add
bar and chain oil. Refer to Filling the Chain Oil Reservoir.
Filling the Chain Oil Reservoir
1. Set the unit on a flat, level surface.
2. To prevent debris from entering the chain oil reservoir, use a damp
cloth to clean the chain oil reservoir cap and surrounding area.
3. Unscrew the chain oil reservoir cap (Fig. 26).
4. Carefully pour the oil into the chain oil reservoir. DO NOT overfill.
5. Reinstall the chain oil reservoir cap. Tighten the cap firmly.
6. Wipe up any oil that may have spilled.
MAINTENANCE
CUSTOMER RESPONSIBILITY
FREQUENCY
Before each
use
After each use
Every 10 hours
* If maintenance or replacement is required, have the unit serviced
by an MTD authorized service center.
Chain Oil
Reservoir Cap
22
MAINTENANCE REQUIRED
•
Check for loose screws, nuts or bolts
(tighten as needed)
•
Check for damaged or worn parts*
•
Check the saw chain sharpness. Refer to
Sharpening the Saw Chain.
•
Check the chain tension (adjust as needed).
Refer to Adjusting the Chain Tension.
•
Fill the chain oil reservoir (refill frequently).
Refer to Adding Bar and Chain Oil.
•
Clean the unit and inspect decals. Refer to
Cleaning in the Cleaning and Storage
section.
•
Clean the guide bar groove and oil
passages.
Fig. 25
Chain Oil
Reservoir
Fig. 26
Chain Oil
Level Window