Poulan Pro 177110 Owner's Manual page 21

TROUBLESHOOTING CHART
PROBLEM CAUSE
Mower blades will • Obstruction in clutch
not rotate mechanism.
• Worn/damaged mower
drive belt.
• Frozen idler pulley.
• Frozen blade mandrel.
Poor grass • Engine speed too slow.
discharge
• Travel speed too fast.
• Wet grass.
• Mower deck not level.
• Low/uneven tire air
pressure.
• Worn, bent or loose blade.
• Buildup of grass, leaves
and trash under mower.
• Mower drive belt worn.
• Blades improperly installed. •
• Improper blades used.
• Clogged mower deck vent
holes from buildup of grass,
leaves, and trash around
mandrels.
Headlight(s) not • Switch is "OFF".
working • Bulb(s) burned out.
(if so equipped) • Faulty light switch.
• Loose or damaged wiring.
• Blown fuse.
Battery will not • Bad battery cell(s).
charge • Poor cable connections.
• Faulty regulator
(if so equipped).
• Faulty alternator.
Engine "backfires" • Engine throttle control not
when turning set at "SLOW" position
engine "OFF" for 30 seconds before
stopping engine.
CORRECTION
• Remove obstruction.
• Replace mower drive belt.
• Replace idler pulley.
• Replace blade mandrel.
• Place throttle control in
"FAST" position.
• Shift to slower speed.
• Allow grass to dry before
mowing.
• Level mower deck.
• Check tires for proper air
pressure.
• Replace/sharpen blade.
Tighten blade bolt.
• Clean underside of mower
housing.
• Replace mower drive belt.
Reinstall blades sharp edge
down.
• Replace with blades listed
in this manual.
• Clean around mandrels to
open vent holes.
• Turn switch "ON".
• Replace bulb(s).
• Check/replace light switch.
• Check wiring and connec-
tions.
• Replace fuse.
• Replace battery.
• Check/clean all connec-
tions.
• Replace regulator.
• Replace alternator.
• Move throttle control to
"SLOW" position and allow
to idle for 30 seconds before
stopping engine.
28
TO LEVEL MOWER HOUSING
Adjust the mower while tractor is parked
on level ground or driveway. Make sure
tires are properly inflated (See "PROD-
UCT SPECIFICATIONS" section of this
manual). If tires are over or
underinflated, you will not properly adjust
your mower.
SIDE-TO-SIDE ADJUSTMENT
• Raise mower to its highest position.
• At the midpoint of both sides of mower,
measure height from bottom edge of
mower to ground. Distance "A" on
both sides of mower should be the
same or within 1/4" of each other.
• If adjustment is necessary, make
adjustment on one side of mower only.
• To raise one side of mower, tighten lift
link adjustment nut on that side.
• To lower one side of mower, loosen lift
link adjustment nut on that side.
NOTE: Each full turn of adjustment nut
will change mower height about 1/8".
• Recheck measurements after adjust-
ing.
Bottom edge of
Bottom edge of
mower to ground
mower to ground
A
Ground Line
Suspension Arm
Lift Link Adjustment Nut
FRONT-TO-BACK ADJUSTMENT
IMPORTANT: Deck must be level side-to
side. If the following front-to-back
adjustment is necessary, be sure to
adjust both front links equally so mower
will stay level side-to-side.
To obtain the best cutting results, the
mower housing should be adjusted so
that the front is approximately 1/8" to 1/2"
lower than the rear when the mower is in
its highest position.
Check adjustment on right side of tractor.
Measure distance "D" directly in front and
behind the mandrel at bottom edge of
mower housing as shown.
• Before making any necessary adjust-
ments, check that both front links are
equal in length. Both links should be
approximately 10-3/8".
• If links are not equal in length, adjust
one link to same length as other link.
• To lower front of mower loosen nut "E"
on both front links an equal number of
turns.
• When distance "D" is 1/8" to 1/2" lower
at front than rear, tighten nuts "F"
against trunnion on both front links.
• To raise front of mower, loosen nut "F"
from trunnion on both front links.
Tighten nut "E" on both front links an
equal number of turns.
• When distance "D" is 1/8" to 1/2" lower
at front than rear, tighten nut "F" against
trunnion on both front links.
• Recheck side-to-side adjustment.
"D" "D"
Both Front Links Should be Equal in Length
A
Nut "F"
Trunnion
Front Links
21
Mandrel
Nut "E"