5240-174
20" 52CC CHAINSAW
20
MAINTENANCE OF SAW CHAIN
AND GUIDE BAR
SAW CHAIN
WARNING!
It is very important for smooth and
safe operation to keep the chain sharp.
Your chain needs to be sharpened when:
•
Sawdust becomes powder-like.
•
You need extra force to saw.
•
The cut way does not go straight.
•
Vibration increases.
•
Fuel consumption increases.
Chains standards:
•
Make sure the saw chain is held securely.
•
Make sure the engine is stopped.
•
Use a round file of proper size for your chain.
Place your file on the chain and push straight forward.
Keep the file position as illustrated (Figure 30).
After every cutter has been set, check the depth
gauge and file it to the proper level (Figure 30).
WARNING!
Be sure to round off the front edge to
reduce the chance of kickback or tie/ strap breakage
(Figure 31).
Figure 30
1. Appropriate gauge checker.
2. Make the shoulder round.
3. Depth gauge standard.
Make sure every cutter has
the same length and edge
angles (Figure 32).
4. Cutter length.
5. Filing angle.
6. Side plate angle.
7. Top plate cutting angle.
GUIDE BAR
Reverse the bar occasionally to
prevent partial wear.
Figure 31
Figure 32
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