Sears 917.370721 - Manual (Page 8)

8
The operation of any lawn
mower can result in foreign
objects thrown into the
eyes, which can result in
severe eye damage. Always
wear safety glasses or eye shields while
operating your lawn mower or performing
any ad just ments or repairs. We recom-
mend standard safety glasses or a wide
vision safety mask worn over spectacles.
HOW TO USE YOUR LAWN MOWER
ENGINE SPEED
Engine speed was set at the factory for
optimum performance. It is not adjustable.
ENGINE ZONE CONTROL
CAUTION: Federal regulations re quire
an engine control to be installed on this
lawn mower in order to minimize the
risk of blade contact injury. Do not un der
any circumstances attempt to de feat the
func tion of the operator con trol. The blade
turns when the engine is running.
• Your lawn mower is equipped with an
operator pres ence control bar which
requires the operator to be positioned
behind the lawn mower handle to start
and operate the lawn mower.
DRIVE CONTROL
• Self-propelling is controlled by hold-
ing the operator presence control bar
down to the handle and pulling the drive
control lever rearward to the handle.
The farther toward the handle the lever
is pulled, the faster the unit will travel.
• Forward motion will stop when either
the operator presence control bar or
drive control lever are released. To stop
forward motion without stop ping engine,
re lease the drive control lever only. Hold
op er a tor presence control bar down
against handle to con tin ue mowing
without self-propelling.
NOTE: If after releasing the drive control the
mower will not roll backwards, push the mow-
er forward slightly to disengage drive wheels.
DRIVE CONTROL ADJUSTMENT
Over time, the drive control system may be-
come “loose”, resulting in decreased speed.
There is a turnbuckle on the un der side of the
drive control housing to increase tension on
the drive cable. Pro ceed as follows:
1. Turn unit off and disconnect spark plug
wire from spark plug.
2. Turn nut on underside of drive control
to increase drive speed.
3. Operate mower to test drive speed.
Readjust as required.
4. If condition fails to improve after the
above steps (forward speed remains
the same), your drive belt is worn and
should be re placed.
TO ATTACH GRASS CATCH ER
1. Lift the rear door of the lawn mower
and place the grass catcher frame side
hooks onto the door pivot pins.
2. The grass catcher is secured to the lawn
mower housing when the rear door is
lowered onto the grass catch er frame.
CAUTION: Do not run your lawn mower
with out mulcher plug or approved grass
catch er in place. Never at tempt to op-
er ate the lawn mower with the rear door
re moved or propped open.
Pivot pins
Rear
door
Grass
catcher
handle
Catcher frame hook
TO ADJUST CUTTING HEIGHT
Raise wheels for low cut and lower wheels
for high cut, adjust cutting height to suit
your requirements. Me di um position is
best for most lawns.
• To change cutting height, squeeze ad-
juster lever to ward wheel. Move wheel
up or down to suit your re quire ments. Be
sure all wheels are in the same setting.
NOTE: Adjuster is properly positioned when
plate tab inserts into hole in lever. Also, 9-
position adjusters (if so equipped) allow lever
to be positioned between the plate tabs.
TO
ENGAGE
DRIVE
CONTROL
Drive
control
lever
DRIVE
CONTROL
DISENGAGED
Operator presence control bar
Adjustment
turnbuckle
LEVER BACKWARD
TO LOWER MOWER
LEVER FORWARD TO RAISE MOWER
Plate tab
Lever
41
NOTE:
All component dimensions given in U.S. inches. 1 inch = 25.4 mm.
IMPORT
ANT
: Use only Original Equipment Manufacturer (O.E.M.) replacement parts. Failure to do so could be hazardous, damage your lawn mo
wer and void your warranty
.
CRAFTSMAN ROT
AR
Y
LA
WN MOWER - - MODEL
NUMBER
917.370721
KEY
P
ART
NO.
NO.
DESCRIPTION
28
12000058
E-Ring 7/16
29
189403
Cover
, Dust, Wheel
30
73800400
Nut, Hex
31
175098
Pawl
32
194231X460
Wheel & Tire
Assembly
, Rear 8 x 1-3/4
33
83923
Nut, Flangelock 3/8-16
34
175103
Gear
35
175105
Retainer
, Drive, LH
36
175104
Disc, Drive
37
184172
Seal, Friction
38
175102
Retainer
, Drive, RH
40
194230X460
Wheel & Tire
Assembly
, Front 8 x 1-3/4
41
188330
Pinion Assembly
,
RH
43
188331
Pinion Assembly
,
LH
44
183688
V
-Belt
47
67725
W
a
sher
51
187530 *
C
ase, Lower
52
187531 *
C
ase, Upper
53
187532
Gear
, 24 T
eeth
54
187533
Shaft, Input
55
183505
W
ire, Formed
56
183506
Bearing, Ball
57
183508
Seal, Output Shaft
58
183509
W
a
sher
59
18351
1
Bushing
60
197385
Shaft, Output
61
183513
Screw
62
183514
Seal, Input Shaft
* Use Dow Corning #709 to reseal Gear Case Halves.
1
195989
Drive Control
Assembly (Includes Cable)
2
195745
Cover
, T
o
p
3
187353
Pulley
4
188281
Lever
, Drive Control
5
195744
Cover
, Bottom
6
181698
Screw
7
400235X479
Mounting Bracket
8
184987
Cap, Bottom
9
196002
Cable, Drive
10
194212
Decal, Drive Control Operation
1
1
188291
Spring, T
orsion
12
187653
Screw
13
193354
Gear Case
Assembly
, Complete
14
193443
Pulley
, Drive
15
197235
Kit, Wheel
Adjuster
Assembly
, RH
(Includes Knob and Bearing)
16
197234
Kit, Wheel
Adjuster
Assembly
, LH
(Includes Knob and Bearing)
17
166785
Nut, Hex
18
168360X004
Spring, Selector
19
701037
Knob, Selector Spring
20
160835X007
Bracket, Wheel
Adjusting
21
160828
Bolt, Shoulder
, Hex Head
22
16991
1
Bearing, Ball
23
186578X004
Axle Arm Assembly
,
RH
24
186577X004
Axle Arm Assembly
,
LH
25
199775X428
Cover
, Drive
26
750634
Screw
, Threaded, Rolled #10-25 x .50
27
183901
Spacer
KEY
P
ART
NO.
NO.
DESCRIPTION