13
NOTE:
Use chain and bar oil only. Other oils will not stick
to the chain properly and will result in damage to the chain
and bar.
MAINTAINING THE CHAIN
See figure 20.
For smooth and fast cutting, the chain needs to be
maintained properly. The following conditions indicate that
the chain requires sharpening or replacing:
■
Wood chips are small and powdery
■
Chain must be forced through the wood during cutting
■
Chain cuts to one side
During maintenance of the chain, consider the following:
■
Improper filing angle of the side plate can increase the
risk of a severe kickback.
■
Depth gauge (or raker clearance) setting determines
the height the cutter enters the wood and the size of
the wood chip that is removed. Too much clearance
increases the potential for kickback. Too little
clearance decreases the size of the wood chip thus
decreasing the chain's cutting ability.
■
If cutter teeth have hit hard objects such as nails and
stones, or have been abraded by mud or sand on the
wood, have a service agent sharpen the chain.
SHARPENING THE CUTTERS
See figures 21 - 24.
Be careful to file all cutters to the specified angles and to
the same length, as fast cutting can be obtained only when
all cutters are uniform.
■
Tighten the chain tension enough that the chain does
not wobble. Do all of your filing at the mid-point of the
bar. Wear gloves for protection.
■
Use a 5/32 in. diameter round file and holder.
■
Keep the file level with the top plate of the tooth. Do
not let the file dip or rock.
■
Using light but firm pressure, stroke towards the front
corner of the tooth. Lift file away from the steel on each
return stroke.
■
Put a few firm strokes on every tooth. File all left hand
cutters in one direction. Then move to the other side
and file the right hand cutters in the opposite direction.
Occasionally remove filings from the file with a wire
brush.
CAUTION
Dull or improperly sharpened chain can cause
excessive engine speed during cutting which may result
in severe engine damage.
WARNING
Improper chain sharpening increases the potential of
kickback. Failure to replace or repair damaged chain
can cause serious injury.
CLEANING THE SPARK ARRESTOR
See Fig. 28
It is recommended to clean or replace the spark arrestor
every 25 hours to ensure proper performance of your
product.
■
Locate the spark arrestor through the hole on the
muffler exit hole.
■
Remove the spark arrestor using needle-nosed pliers.
■
Clean the spark arrestor with a small wire brush.
■
Replace the spark arrestor.
CLEANING THE AIR FILTER
See Fig. 25
For proper performance and longer life, keep the air filter
clean.
■
Ensure the product is in the off position
■
Remove the air filter cover.
■
Remove the air filter and clean it with warm soapy
water.
■
Rinse, and let the air filter dry completely.
■
Work two drops of lubricant into the air filter.
■
Replace the air filter (fits only one way).
■
Replace the air filter cover.
NOTE:
The air filter should be replaced annually for the
best performance.
CHECKING THE FUEL CAP
WARNING
A leaking fuel cap is a fire hazard and must be replaced
immediately.
The fuel cap contains a non-serviceable filter and a
check valve. A clogged fuel filter will cause poor engine
performance. If performance improves when the fuel cap
is loosened, check valve may be faulty or filter clogged.
Replace fuel cap if required.
