Poulan Pro PP446T Manual De Instrucciones página 17

For normal homeowner use, however, the
muffler and spark arresting screen wilt not re-
quire any service. After 50 hours of use, we
recommend that your muffler be serviced or
replaced by your authorized service dealer.
REPLACE SPARK PLUG
Replace the spark plug each year to ensure
the engine starts easier and runs better. Set
spark plug gap at 0.025 inch (0.6 mm). Igni-
tion timing is fixed and nonadjustable.
1. Twist, then pull off spark plug boot.
2. Remove spark plug from cylinder and
discard.
3. Replace with Champion RCJ-6Y spark
plug and tighten securely with a 3/4 inch
(19 mm) socket wrench.
4. Reinstallthe spark plug boot.
,£A
_z, WARNING:
Disconnect the spark
plug before performing maintenance, service, or
adjustments except for carburetor adjustments.
CHAIN SHARPENING
Chain sharpening is a complicated task that
requires special tools. We recommended you
refer chain sharpening to a professional chain
sharpener.
CHAIN REPLACEMENT
WARNING:
Wear protective gloves
when handling chain. The chain is sharp and
can cut you even when it is not moving.
It is normal for a new chain to stretch during the
first 15 minutes of operation. You should re-
check your chain tension frequently and adjust
the chain tension as required. See CHAIN TEN-
SION section.
Replace the old chain when it becomes worn or
damaged. Use only the Low-Kickback replace-
ment chain specified in the repair parts list.
TO REPLACE CHAIN:
1. Move ON/OFF switch to the OFF position
and disconnect spark plug.
2. Remove bar clamp nut.
3. Remove bar clamp.
4. Turn adjusting screw by hand counter-
clockwise until adjusting pin just touches
the stop.
5. Slide guide bar behind sprocket until
guide bar stops against sprocket.
6. Remove the old chain.
7. Carefully remove new chain from pack-
age. Hold chain with the drive links as
shown.
Tip of
Bar
DIRECTION OF ROTATION
Cutters Depth Gauge
Drive Links
8. Place chain over sprocket, fitting the
drive links in the sprocket.
9. Fit bottom of drive links between the teeth
in the sprocket in the nose of the guide
bar.
10. Fit chain drive links into bar groove.
11. Pull guide bar forward until chain is snug
in guide bar groove. Ensure all drive links
are in the bar groove.
12. Now. install bar clamp making sure the
adjusting pin is positioned in the lower
hole in the guide bar.
Lower
Hole
Adjusting Pin _
,/ Guide Bar
13. Install bar clamp nut and finger tighten
only. Do not tighten any further at this
point. Proceed to the CHAIN ADJUST-
MENT section.
CHAIN ADJUSTMENT
See CHECK CHAIN TENSION in MAINTE-
NANCE section.
17