Oregon Qualcast PC40 Operation And Maintenance Manual page 19

Maintenance
Maintenance instructions
CHAIN SHARPENING - The pitch of the chain (Fig. 21) is
Sharpen the chain using protective gloves and a round le of ø5/32" (4mm).
Always sharpen the cutters only with outward strokes (Fig. 22) observing the values given in Fig. 21.
After sharpening, the cutting links must all have the same width and length.
WARNING: A sharp chain produces well de ned chips. When your chain starts to produce sawdust,
it is time to sharpen.
After every 3-4 times the cutters have been sharpened you need to check the height of the depth
gauges and, if necessary, lower them using the at le and template supplied optional, then round off
the front corner. (Fig. 23)
WARNING:
Proper adjustment of the depth gauge is as important as proper sharpening of the chain.
GUIDE BAR - The bar should be reversed every 8 working hours to ensure uniform wear.
Keep the bar groove and lubrication hole clean using a bar groove cleaner (optional). (Fig. 24)
Check the bar rails frequently for wear and, if necessary, remove the burs and square-up the rails
using a at le. (Fig.25)
Fig. 21
Fig. 24
WARNING: Never mount a new chain on a worn sprocket or self-aligning ring.
BAR WEAR - Turn guide bar frequently at regular intervals (for example, after 5 hours of use), to
ensure even wear on top and bottom of bar.
OIL PASSAGES - Oil passages on the bar should be cleaned to ensure proper lubrication of the bar
and chain during operation.
NOTE: The condition of the oil passages can be easily checked. If the passages are clear, the chain
will automatically give off a spray of oil within seconds of starting the saw. Your saw is equipped with
an automatic oiler system.
CHAIN MAINTENANCE
CHAIN TENSION:
Check the chain tension frequently and adjust as often as necessary to keep the chain snug on the
bar, but loose enough to be pulled around by hand.
BREAKING IN A NEW SAW CHAIN:
A new chain and bar will need chain readjustment after as few as 5 cuts. This is normal during the
break-in period, and the interval between future adjustments will begin to lengthen quickly.
Fig. 25
Customer Helpline
3/8" LoPro x .050".
Fig. 22
0844 801 3652
Fig. 23
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