Poulan Pro PP4218AV - Manual (Page 16)

16
REPLACE SPARK PLUG
The spark plug should be replaced each
year to ensure the engine starts easier and
runs better. Ignition timing is fixed and non-
adjustable.
1. Loosen 3 screws on cylinder cover.
2. Remove the cylinder cover.
3. Pull off the spark plug boot.
4. Remove spark plug from cylinder and
discard.
5. Replace with Champion RCJ--7Y spark
plug and tighten securely with a 3 /
4
inch
(19 mm) socket wrench. Spark plug gap
should be 0.025 inch (0,6 mm).
6. Reinstall the spark plug boot.
7. Reinstall the cylinder cover and 3
screws. Tighten securely.
Spark
Plug
Cylinder
Cover
Spark
Plug Boot
REPLACE FUEL FILTER
To replace fuel filter, drain your unit by run-
ning it dry of fuel. Remove fuel cap and its
connected retainer from tank. Pull filter from
tank and remove from line. Replace and re-
assemble.
CHAIN ADJUSTMENT
See CHAIN TENSION in ASSEMBLY section.
CHAIN SHARPENING
WARNING: Improper chain sharp-
ening techniques and/or depth gauge mainte-
nance will increase the chance of kickback
which can result in serious injury.
WARNING:
Wear protective gloves
when handling chain. The chain is sharp and
can cut you even when it is not moving.
Conditions which indicate the need for chain
sharpening:
S
Reduction in size of wood chips. The size
of the wood chip will decrease as the chain
gets duller until it becomes more like a
powder than a chip. Note that dead or
rotted wood will not produce a good chip.
S Saw cuts to one side or at an angle.
S Saw has to be forced through the cut.
Tools required:
S 5/32 inch (4 mm) diameter round file and
file holder
S Flat file
S Depth gauge tool
TO SHARPEN CHAIN:
1. Move ON/STOP switch to the STOP
position.
2. Check chain for proper tension. Adjust
chain tension if necessary. See CHAIN
TENSION section.
3. Sharpen cutters.
S To sharpen the cutters, position the
file holder level (90 ˚) so that it rests
on the top edges of the cutter and
depth gauge.
NOTE: The chain has both left and
right hand cutters.
Depth Gauge
File
File Holder
Cutter
90 ˚
S Align the 30 ˚ file holder marks paral-
lel with the bar and to the center of the
chain.
Cutter
Cutter 30 ˚
File Holder Line
S Sharpen cutters on one side of the
chain first. File from the inside of each
cutter to the outside. Then, turn the
chain saw around and repeat the pro-
cess for the other side of the chain.
S File on the forward stroke only. Use 2
or 3 strokes per cutting edge.
S Keep all cutters the same length
when filing.
S File enough to remove any damage
to cutting edges (side plate and top
plate of cutter).
All Cutters
Same Length
Remove Damage
Top Plate
Side Plate
S File chain to meet the specifications
as shown.
30 ˚
85 ˚ 60