Husqvarna 917.374450 Owner's Manual page 16

10.Remove drive belt from engine pulley;
discard old belt.
TO REPLACE
DRIVE BELT
1. Place new drive belt on engine pulley.
2. Route the other end of the new drive
belt through hole in housing.
3. Return mower to upright position.
4. Install new drive belt into idler arm
assembly, then around the drive pulley.
Be sure belt is inside of belt keepers.
5. Reattach idler arm assembly with hex
nut previously removed.
6. Turn lawn mower on its side. Make
sure air filter and carburetor are up.
7. Reattach debris shield to housing with
tab of debris shield in housing hole.
8. Position blade on the blade adapter
aligning the two (2) holes in the blade
with the raised lugs on the adapter.
9. Be sure the trailing edge of blade (op-
posite sharp edge) is up toward the
engine as shown.
10. Install the blade bolt with the lock
washer and hardened washer into
blade adapter and crankshaft.
11. Use block of wood between blade and
lawn mower housing and tighten the
blade bolt, turning clockwise.
, The recommended tightening torque is
35-40 ft. Ibs.
IMPORTANT: Blade bolt is heat treated.
If bolt needs replacing, replace only with
approved bolt shown in the Repair Parts
section of this manual.
12. Return mower to upright position.
13. Reattach drive cable and return spring
to the idler arm assembly, then reat-
tach drive cable to anchor.
14. Reattach drive cover with screw(s)
previously removed.
15. Connect spark 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.
Handle pin
SQ
Low
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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