RedMax GZ4000 Owner's/Operator's Manual page 22

9. Maintenance
F34
F35
F36
22 
2. Fuel filter
(a) Using a wire hook, take out the filter from the
filler port. (F34)
(1) Fuel filter
(b) Disassemble the filter and wash with gasoline,
or replace with new one if needed.
NOTE
• After removing the filter, use a pinch to hold the
end of the suction pipe.
• When assembling the filter, take care not to
allow filter fibers or dust inside the suction pipe.
4. Spark plug
Clean the electrodes with a wire brush and reset
the gap to 0.65 mm as necessary. (F35)
5. Sprocket
Check for cracks and for excessive wear interfenng
with the chain drive. If the wearing is found
obviously, replace it with new one. Never fit a new
chain on a worn sprocket, or a worn chain on a
new sprocket. (F36)
Champion
RZ7C