10. Tighten the guide bar cover by turning the sprocket locking knob and using a screwdriver to tighten
crew.
WARNING: Never try to run the chainsaw without sprocket cover securely tightened.
Caution: Proper saw chain tension is extremely important. If saw chain is too tight, the
guide bar and saw chain will be quickly damaged. If the saw chain is too loose, it may get out of the guide
bar groove and cause an Injury.
Note: A new chain will stretch so adjust the tension after a few cuts. Watch saw chain tension carefully
for the first half hour of cutting.
Guide bar and oil holes
Clean guide bar before use. Follow instructions for removing and installing
guide bar and saw chain. Remove guide bar and clean groove of the guide
bar with a small screwdriver . Clean oil holes with a wire. Check the
sprocket and the clutch and clean the bar mount area before installing the
bar. Guide bar with sprocket nose should be lubricated with grease using a
lubricating syringe. Invert the symmetrically shaped guide bar every 8
working hours or each time the chain is removed to ensure uniform wear.
Check the bar rails frequently for wear and remove burs and square up the
rails using a flat file. Clean the Oiler port on the saw every time the saw
chain and guide bar are removed.
Sprocket
A damaged drive sprocket will cause premature wear or damage of the chainsaw. Check the sprocket
when installing a new chain. When outer diameter of sprocket is worn 0.5mm (0.020”
）
or more, replace
it. Always clean sprocket, clutch and bar mount area before installing guide bar.
Saw chain sharpening
It is advisable to have professional shops sharpen saw chains. It is beyond the expertise of the typical
home owner to sharpen saw chains. An improperly sharpened saw chain will not cut effectively, require
more physical effort, and cause high vibrations and a higher rate of wear.
Maintenance chart
Before Work After
Work
Weekly Monthl
y
If faulty If
damage
As
require
Complete
machine
Visual inspection x
Clean x
Switch Check operation x
Oil tank Clean x
Chain
lubrication
Check x
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