Oregon Qualcast PC40 Operation And Maintenance Manual page 16

Maintenance
Maintenance instructions
FUEL FILTER
WARNING: Never operate your saw without a fuel lter. The fuel lter should be replaced after each
20 hours of use. Drain fuel tank completely before changing lter.
1. Remove the fuel tank cap.
2. Bend a piece of soft wire to from a hook at the end.
3. Reach into fuel tank opening and hook fuel line. Carefully pull the fuel line toward the opening until
you can reach it with your ngers.
NOTE: Do not pull hose completely out of tank.
4. Lift lter (A) out of tank (Fig.16).
A
5. Pull lter off with a twisting motion. Discard lter.
6. Install new lter. Insert end of lter into tank opening. Make sure lter sits in bottom corner of tank.
Use a long screwdriver to aid in lter placement if necessary.
7. Fill tank with fresh fuel / oil mixture. See Section FUEL AND LUBRICATION. Install fuel cap.
SPARK ARRESTER SCREEN
NOTE: A clogged spark arrester screen will dramatically reduce engine performance.
1. Remove the 2 bolts (A) and pull muf er out. (Fig. 17A).
2. Remove the 2 screws that holds the cover (C). (Fig.17B)
3. Discard the used spark arrester screen (D) and replace it with a new one.
4. Reasemble the muf er components and install the muf er to the cylinder. Tighten securely.
SPARK PLUG
NOTE: For ef cient operation of saw engine, spark plug must be kept clean and properly gapped.
1. Push STOP switch down.
2. Remove knob (A) holding air lter cover in place, remove the top cover (B) by loosening the cover
retaining screws. Cover will lift off. (Fig.18A)
3. Disconnect the wire connector (C) from the spark plug (D) by pulling and twisting at the same time
(Fig. 18B).
4. Remove spark plug with spark plug socket wrench. DO NOT USE ANY OTHER TOOL.
5. Check electrode gaps with wire feeler gauge and set gaps to .025" (.635mm) if necessary.
6. Reinstall a new spark plug.
NOTE: A resistor spark plug must be used for replacement.
NOTE: This spark ignition system meets all requirements of the Interference-Causing Equipment
Regulations.
A
A
Fig. 16
16
A
17
C
C
B
C
B
A
A
B
B
B
B
Fig. 17A
Customer Helpline
C
D
D
D
D
Fig. 17B
0844 801 3652
16
C
C
B
16
A
17
Fig. 18A Fig. 18B
D
D