Husqvarna 917.374451 Owner's Manual page 16

10.Removedrive belt from enginepulley;
discard old belt.
TO REPLACE DRIVEBELT
1. Placenewdrive belt on enginepulley.
2. Routethe other end of the new drive
belt through hole in housing.
3. Returnmowerto uprightposition.
4. Installnew drive belt into idler arm
assembly,then aroundthe drive pulley.
Be sure belt is insideof belt keepers.
5. Reattachidler arm assemblywith hex
nut previouslyremoved.
6. Turn lawn moweron its side. Make
sure air filter andcarburetorare up.
7. Reattachdebris shield to housingwith
tab of debrisshield in housinghole.
8. Positionbladeon the bladeadapter
aligningthe two (2) holes in the blade
with the raisedlugs on the adapter.
9. Be sure the trailing edgeof blade (op-
positesharp edge) is up towardthe
engineas shown.
10.Installthe blade boltwith the lock
washer and hardenedwasher into
blade adapterand crankshaft.
11.Use blockof wood betweenbladeand
lawn mowerhousingand tightenthe
blade bolt, turning clockwise.
• The recommendedtighteningtorque is
35-40ft. Ibs.
IMPORTANT: Bladebolt is heattreated.
If bolt needs replacing,replaceonlywith
approvedbolt shown in the Repair Parts
sectionof this manual.
12.Returnmowerto uprightposition.
13.Reattachdrive cable and returnspring
to the idler arm assembly,then reat-
tach drivecable to anchor.
14.Reattachdrive coverwith screw(s)
previouslyremoved.
15.Connectspark plug wire to spark plug.
TO ADJUST HANDLE
The handle on your lawn mower has three
(3) height positions - adjust to height that
suits you.
• Squeeze the bottom ends of lower
handle towards each other until the pin
in handle can be inserted into one of the
three height adjustment holes.
High Handle pin
Handle
bracket
ENGINE
ENGINE SPEED
Your engine speed has been factory set.
Do not attempt to increase engine speed
or it may result in personal injury. If you
believe that engine is running too fast or
too slow, take your mower to a Husqvarna
or other qualified service center for repair
and adjustment.
CARBURETOR
Your carburetor is not adjustable. If your
engine does not operate properly due
to suspected carburetor problems, take
your lawn mower to a Husqvarna or other
qualified service center for repair and/or
adjustment.
IMPORTANT: Never tamper with the
engine governor, which is factory set for
proper engine speed. Overspeeding
the engine above the factory high speed
setting can be dangerous. If you think
the engine-governed high speed needs
adjusting, contact a Husqvarna or other
qualified service center, which has proper
equipment and experience to make any
necessary adjustments.
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