Wheel Horse B-81 User manual

B
c
D
Service Manual
PRICE: $5.00
nWHEEL HORSE
1I..!l1awn & garden tractors
PART NO. 810063Rl
PRINTED IN U.S.A. ona
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FOREWORD
This publication has been prepared to assist Wheel Horse dealers in
servicing Band C-Series, 0-160 and 0-200 tractors. Information for the
C-161
Twin 8-Speed or Automatic, is given separately at the end of each
chapter.
Information contained in this manual is concentrated on areas that
require adjustment, as well as removal, replacement, and overhaul of some
of the more complex systems of the tractors. Repair of major assemblies, such
as mechanical and
automatic transmissions, and the Onan engine, is detailed
in other Wheel Horse Service Manuals. Repair of Briggs and Stratton or
Kohler engines, and the Peerless transaxle, is described in literature available
from their respective manufacturers.
Knowledge
of basic mechanical and electrical repair work is essential
when using
this publication. Always observe common shop safety rules while
performing service work.
Replace all parts that are worn or no longer serviceable. Always replace
expendable parts, such as O-rings, gaskets, and seals.
Section 1
lists specifications, torque values, and special instructions
not listed in the general text. It is advised that you become familiar with this
information before making adjustments or repairs.
THIS MANUAL APPLIES TO THE FOLLOWING VEHICLES:
MODEL
VEHICLE IDENTIFICATION NUMBER
B·81 4·Speed
82·08BP01, 92·08BP01
B·111 4-Speed
82·11 BP01, 92-11 BP01
C·81
8·Sp~ed
81-08K801,91·08K801
C-101 8·Speed 81-1 OK801, 91-1OK801
C·121 8-Speed
81·12K801, 91-12K801
C·121
Automatic 81-12KS01
C·141 8-Speed
81·14K801,91-14K801
C·141 Automatic
81-14KS01
C·161
8-Speed 81-16K801
C-161 Automatic 81·16KS01
C·161
Twin 8-Speed 81-16B801, 91-16B801
C-161
Twin Automatic 81·16BS01,91·16BS01
0-160 Automatic
81-160S01
0-200 Automatic 81-20KS01, 91·20KS01
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TABLE OF CONTENTS
SECTION 1 ....; SPECIFICATIONS AND GENERAL INFORMATION
SECTION 2 - PRE-DELIVERY SERVICE
SECTION 3 - GENERAL MAINTENANCE
SECTION 4 - ENGINE
SECTION 5 - CLUTCH, BRAKES, TRANSMISSION/TRANSAXLE
SECTION 6 - ELECTRICAL SYSTEM
SECTION 7 - ATTACHMENT LIFTS
SECTION 8 - CHASSIS
SECTION 9 -
POWER TAKE-OFF (PTO)
--- _._-------------------
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SPECIFICATIONS
TRACTOR SPECIFICATIONS:
ENGINE:
TRACTOR
ENGINE ENGINE
MODel
MODel' SPEC. NO.
8-81 B-191707 1136-01
B-111 B-252707 0151-01
C-81 K181S PF30700D
C-I01 K241AS PF46766D
C-121 K301AS PF47648D
C-141 K321AS PF60322D
C-161 K341AS PF71246A
C-161 Twin
8-401407
0130-01
0-160
O-BF
MS3268F
0-200
K532S 53105A
RATED
H.P.**
8
11
8
10
12
14
16
16
16
19.9
SECTION 1
DISPLACEMENT BORE
STROKE
IGNITION
cu.
in.! cc in./mm
in.!mm
19.44/318.56
3/76.2
2.75/69.9
Magneto
24.36/399.19
3.438/87.3 2.625/66.7 Magneto
18.6/304.8
2.94/74.7 2.75/69.8 Battery
23.9/391.6 3.25/82.6
2.88/72.9 Battery
29.07/476.4 3.38/85.7 3.25/82.6
Battery
31.27/512.4 3.5/88.9 3.25/82.6
Battery
35.89/588.1
3.75/95.3
3.25/82.6
Battery
40/655.7 3.438/87.3
2.156/54.8
Magneto
40.3/660.4
3.125/79.4 2.625/66.7
Battery
53.68/879.7 3.38/85.7 3/76.2
Battery
*letter Prefix: B Briggs & Stratton, K = Kohler, 0 =
Onan. Basic engine model number shown; specification and serial numbers from engine
I. D. plate are required to completely identify engine.
'"Engine manufacturer's rating at 3600 RPM.
TRANSMISSION:
B-Series
Mode's
C-Series 8-Speed Models
Type: Mechanical Mechanical
All Gear
All Gear
Number of
Forward Speeds:
3 6
Number of
Reverse Speeds:
1 2
Approximate Ground Speeds
(at full throttle):
Gear Speed
Gear
low Range
High Range
1st 1.7
mph (2.7 kph)
lst .5 mph ( .8 kph) 2
mph (3.2 kph)
2nd 3.6 mph (5.8 kph)
2nd .8 mph (1.3 kph) 3.2
mph (5.2 kph)
3rd
5.5 mph (8.8 kph)
3rd 1.4 mph (2.2 kph) 5.5
mph (8.8 kph)
Rev. 2.5
mph (4 kph) Rev. .6
mph ( 1 kph) 2.6
mph (4.2 kph)
C-Series Automatic Models D-Series Automatic Models
Type: Hydrostatic Hydrostatic
Number of
Forward Speeds:
Infinite Infinite
Number of
Reverse Speeds: Infinite Infinite
Approximate Ground Speeds
(at full throttle):
Variable 0-6.3 mph
(10 kph) Forward
Variable 0-7.5 mph (12 kph) Farward
Variable 0-3.2 mph
Variable 0-3.6 mph (5.8 kph) Reverse
(5.2 kph) Reverse
ELECTRICAL SYSTEM:
TIRES:
Type: 12 Volt D.C., Sizes: Front Rear
Negative Ground
B-81
13 x 5:00-6 18 x 8:50-8
Alternator: Briggs &
Stratton -Dual
Circuit, 12 Volt, 3 Amp.
B-111 13 x 6:50-6 18 x 9:50-8
(Charging Circuit) C-Series 16 x 6:50-8 23 x 8:50-12
Onan and Kohler -
12 Volt, 15 Amp. D-Series 18 x 8:50-8 26 x 12:00-12
Battery: B-81,
B- 111, C-81 -Pressure:
12 Volt, 24 Amp. Hr.
PSI 12 12
C-101,C-121,C-141,C-161-
12 Volt, 32 Amp. Hr.
kg/cm
2
.85
.85
0-160, D-200
12 Volt,
45 Amp. Hr.
1-1
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SECTION 1
TRACTOR SPECIFICATIONS (continued):
PHYSICAL DATA:
TRACTOR HEIGHT LENGTH WIDTH WHEEL OUTSIDE
DRY
MODEL
BASE TURNING RADIUS WEIGHT
. -
B-81
37 in. 65 in.
34.5 in. 45.5 in.
80 in. 4001bs.
(94 em) (165 em) (88 em)
(116 em) (203 em) (180 kg)
B-lll 37 in.
65 in. 36 in.
45.5 in.
80 in. 4051bs.
(94 em) (165 em) (92 em)
(116 em) (203 em) (182 kg)
C-81
41 in.
65 in.
36 in.
45.5 in.
75.75 in. 5401bs.
(104 em) (165 em) (92 em)
(116 em) (192 em) (243 kg)
C-l0l
41
in.
65 in. 36 in.
45.5 in.
75.75 in. 5901bs.
(104 em) (165 em) (92 em)
(116 em) (192 em)
(266 kg)
C-121
41 in.
65 in. 36 in.
45.5 in.
75.75 in. 6001bs.
8-Speed
(104 em) (165 em) (92 em)
(116 em) (192 em) (270 kg)
C-121
41 in.
65 in.
36 in.
45.5 in.
75.75 in. 6301bs.
Automatic
(104 em) (165 em) (92 em)
(116 em) (192 em)
(284 kg)
C-141, C-161
41 in.
65 in.
36 in.
45.5 in.
75.75 in. 6001bs.
8-Speed
(104 em) (165 em) (92 em)
(116 em) (192 em)
(270 kg)
C-161 Twin
41
in.
69 in.
36 in.
45.5 in.
75.75 in. 5501bs.
8-Speed
(104 em) (175.3 em) (92 em)
(116 em) (192 em)
(249 kg)
C-141,
C- 161 41 in. 65 in.
36 in.
45.5 in.
75.75 in.
6401bs.
Automatic
(104 em) (165 em) (92 em)
(116 em) (192 em) (288 kg)
C-161 Twin
41 in. 69 in.
36 in.
45.5 in.
75.75 in.
5901bs.
Automatic
(104 em) (175.3 em) (92 em)
(116 em) (192 em)
(266 kg)
0-160 45.5 in. 75.5 in.
45 in.
50 in.
90 in.
8751bs.
(116 em) (192 em)
(114 em)
(127 em)
(229 em)
(394 kg)
0-200
45.5 in.
75.5 in.
45 in.
50 in.
90 in. 10251bs.
(116 em) (192 em)
(114 em) (127 em)
(229 em) (461 kg)
TUNE-UP/GENERAL MAINTENANCE SPECIFICATIONS:
. ENGINE:
TRACTOR POINT
TIMING IGNITION
SPARK
SPARK DIRECTION
IDLE GOVERNED
MODEL
GAP MARK
TIMING
PLUG PLUG GAP OF ROTATION
RPM
MAX. RPM
in.lmm
LOCATION (BTDC) TYPE*
in.lmm (Facing PTO) (No Load)
(No Load)
B-81
.020/.5
N/A
Fixed CJ-8
.030/.76
Counterclockwise 1750
3300
B-lll
.020/.5
N/A
Fixed CJ-8
.030/.76
Counterclockwise 1750
3300
C-81
.020/.5
N/A
Fixed
J-8
.025/.64
Counterclockwise
1900 3500
C-l0l
.020/.5
N/A
Fixed
H-l0
.025/.64
Counterclockwise
2100
3400
C-121
.020/.5
N/A
Fixed
H-l0
.025/.64
Countercloekwise
2100 3400
C-141
.020/.5
N/A
Fixed
H-l0
.025/.64
Counterclockwise
2100
3400
C-161
.020/.5
N/A
Fixed H-10
.025/.64
Counterclockwise
2100
3400
C-161 Twin
.020/.5
N/A
Fixed
J-8
.030/.8
Counterclockwise 1450
3300
0-160
.023/.6
Flywheel 25° (Cold) H-8
.025/.64
Counterclockwise
1350
3600
0-200
.020/.5 Flywheel
27°
H-l0
.035/.9 Countercloekwise 1350 3600
i
, 'Or equivalent (Champion number shown).
1-2
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·
•
·
TUNE-UP/GENERAL MAINTENANCE SPECIFICATIONS
(continued):
LIQUID CAPACITIES:
Crankcase:
B-81 1Ys qt. (1.1 I)
B-111 131 qt. (1.4 I)
C-81 1 y.; qt. (1.2 I)
C-101 131 qt. (1.4 l)
C-121 131 qt. (1.4l)
C-141 - 131 qt. (1.4/)
C-161 - 131 qt. (1.4 I)
C-161 Twin -1% qt. (1.7 l)
0-160 - 2Y.; qt. (2.1 I) wI filter
0-200 - 331 qt. (3.31) w/filter
Transmission:
B-Series - % qt. (.7 l) SAE 90, API Service GL5
C-Series 8-Speed - 2 qt. (1.9 l) SAE 140, API Service GL5
C-Series Automatic -5.5 qt. (5.2l) SAE 10W-30 or 10W-40
O-Series - 6 qt. (5.7 I) SAE 10W-30 or 10W-40
Fuel Tank:
B-Series - 131 ga I. (5.7 l)
C-Series - 3 gal. (11 .41)
0-160- 5% gal. (21.9l)
0-200 - 8 gal. (30.4 I)
ENGINE OIL: TEMPERATURE -VISCOSITY CHART
Air Temperature
Oil Viscosity
Briggs and Stratton Engine
Above 40°F (40C) SAE 30*, 10W-30, 10W-40
40° to OOF (4° to -18°C) SAE 5W-20 or 5W-30*, lOW, 10W-30
Below
OOF (-18°C) SAE 10W or 10W-30, Diluted 10% with kerosene
API Service: "SC" (MM), "SO" (MS) or USE" oil
Kohler Engine
Above
30
0F (-1°C) SAE 30*,
lOW-3D, 10W-40
30° to OOF (_1° to -lSoC) SAE 10*, 5W-30, 10W-30, 10W-40
Below
OOF (-18°C) SAE 5W-20, or 5W-30
API Service: "SC" (MM), "SO" (MS) or liSE" oil
Onan Engine
Above
30°F (·1
0
C) SAE 30
Below 30°F (-1°C) SAE 5W-30
API Service: liSE" oil
" Preferred viscosity. Use alternates listed if preferred
viscosity
is unavailable.
CHASSIS:
SECTION 1
Ir-----------~~---------------------------------------------------------~---------------------------_,I
i Zerk Fittings: PTO Brake Adjustment (PTO engaged): Front Wheel End Play:
B.Series 6 B-Series -
.010 (.25 mm) Gap 0-200 .012 (.3 mm) Gap All Models 0 to .015 in. (.4 mm) •
C-Series - 6 between brake pad and pulley between brake pad and pulley
O-Series -7 C-Series .012 (.3 mm) Gap
0-160 - .010/.015 (.25 .4 mm)
between brake pad and pulley Gap between rotor and armature
1-3
Front Wheel Alignment (toe-in):
O-Series only - 1/16· l/S in.
0.6 -3.2 mm)
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SECTION 1
TORQUE VALUES:
SPECIAL
Tractor Model Location Torque
ft-Ib
Nm
Rear wheel hub set screws
28 - 32
39 -45
C-Series Fuel
tank front bolt 5-8
7 - 11.2
Fuel
tank insert bolt 5-8
7 - 11.2
D-Series Fuel
tank nuts
GENERAL
Size Torque
ft-Ib
Nm
1/4 - 20
8
11
5/16-18
17 - 22 24
31
3/8 -16
30 - 35
42 49
3/8 - 24
25- 30
35 42
1/2 - 13
75 - 80 105 - 112
Self Tapping Screws - All Models
5/16 - 18 15
21
3/8 - 16
25 35
SPECIAL INSTRUCTIONS
All Models
Lube all grease fittings with No. 2 General Purpose
lithium grease
Coat exposed areas
of axle hubs with anti-rust lubricant
(Texaco
Compound"l, " Light, Code 1976 or equivalent)
-Install seat spring long leg toward seat.
C-Series Models
Adjust lift chain so length from bolt through lower link
to trunnion center is 7.4 inches (19 cm). For final ad-
justment, see Section 7
Kohler engines: assemble engine PTO pulley
1/16 inch
(1.6 mm) from engine face
Adjust PTO brake
to provide .ol2'l3 mm) clearance be-
tween brake pad and pulley when clutch is engaged
-Coat lift lever shaft with anti-rust lubricant (Texaco
Compound"L," Light, Code 1976 or equivalent)
-
Use Isomount No. 106434, color code white, for all
models except C-81. Use Isomount No. 106441, no
color code, for C-St models
Fuel hose must remain clear of Sundstrand Transmission.
Secure hose
to top of transaxle and bottom of hood-
stand.
1-4
12 17
O-Series Models
-Fasten rectifier wire to inside edge of frame with wire
clip
-Align
front wheels for 1/16 to 1/8 inch 0.6 to 3.2 mm)
toe-in
Steering gear
to contain 1/4Ib.(0.1 kg) grease
Adjust choKe and
throttle friction to provide 8 to 10 lb.
(1.8
to 2.3N) pull force at knobs
Adjust friction
on control cam to provide 16 to 20 lb.
(3.6
to 4.5N) pull force at top of motion control lever
-Tie wrap wiring harness
to steering column
-Grease
input shaft spline of hydro pump and brake rod
(approximately 2 inches past threaded end) with
"moly"
grease.
-
locate bottom edge of muffler 1 3/4 inch (4.4 em)
above grille shroud assembly
-Adjust brake rods so brake band just clears drum with
pedal released
-Adjust park brake rod with brake handle
in engaged
position
Install spring disc washers on choke and
throttle controls
as shown in Fig. 1-1.
SPRING DISC WASHER
ONEON CHOKE
TWO ON THROTTLE
FRICTION
WASHER
(100305)
Fig. 1-1 Control Friction
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- PTO Brake Adjustment:
a. 0·160 -adjust PTO brake for .010/.015 inch (.25 to
.4 mm) gap between rotor and armature assembly
b. 0-200 -adjust PTO brake for .012 inch (.3 mm) gap
between brake pad and pulley with PTO engaged
-Flex Coupling
a. 0-160 -install engine/pump flex coupling parts as
shown in Fig. 1-2
106641 SPLINE WASHER
103029 DRIVEN COUPLING
920008 WASHER (4) REQUI
RED
920082 LOCKWASHER
908023 BOLT
106645 MOUNTING PLATE
ENGINE
MOUNTING
FACE
Fig. 1·2 0·160 Flex Coupling
b. 0·200 -install engine/pump flex coupling parts as
shown in Fig. 1·3
106641 SPLINE WASHER
103029 DRIVEN COUPLING
920008 WASHER (4) REQUIRED
ENGINE
MOUNTING
FACE
102622 COUPLING
920082 LOCKWASHER
908023 BOLT
106645 MOUNTING PLATE
Fig. 1·3 0-200 Flex Coupling 1-5
SECTION 1
0·200 cable tie headlight wire and ignition wire to the
governor vacuum
hose
-0-200 PTO -adjust PTO clutch hook to 1 13/16
inch (4.6
em) from engine face to hook centerline. Ad-
just clutch turnbuckle for 16
to 18 lb. (3.6 to 4.0 N).
pull
on clutch handle, and complete disengagement of
clutch pulley
-0-200 -
grease chrome bearing surface of PTO clutch
plate with
"moly" grease.
C-161 TWIN
TORQUE VALUES:
Same as C-Series
SPECIAL INSTRUCTIONS:
Same as C-Series except:
- Drive pulley set screw to be tightened
while PTO is engaged to pre-load thrust
bearing.
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VEHICLE IDENTIFICATION NUMBER (VIN) EXPLANATION SECTION 1
..... ------ ... -- JULIAN DATE
81 20 RG 01 00001 :ye;r~n::aymanUfactured
Loo,
T··
'I MODEL YEAR 1
: 6 = 1976
7 1977
8 1978
9 1979
o 1980
1 1981
2 1982
3 1983
4 1984
5
6
7
8
9
o
-~
I
i
I SERIAL NUMBER I
00001 through 99999
PARTS LIST CODE
01 through 99
365th day
of year
YEAR
7'" 1977
8 = 1978
BASIC PRODUCT
INFORMATION FOR:
PRODUCT CATEGORIES 1, 2, 3, 4
ENGINE MAKE CODE TRANSMISSION
MAKE CODE
B BRIGGS & STRATTON E EATON
K KOHLER F FOOTE
o = ONAN G GUTBROD
R
RENAULT P PEERLESS
T TECUMSEH S SUNDSTRAND
E
BATTERY POWER 4 4·SPEED WHEEL HORSE
8 8·SPEED WHEEL HORSE
PRODUCT CATEGORY 5
MS MID MOUNT, SIDE DISCHARGE
MR MID MOUNT, REAR DISCHARGE
RS REAR MOUNT, SIDE DISCHARGE
RR REAR MOUNT, REAR DISCHARGE
FS FRONT MOUNT, SIDE DISCHARGE
EFFECTIVE CATEGORY MEASUREMENT I
FR FRONT MOUNT, REAR DISCHARGE
IE -HORSEPOWER, WIDTH OR CAPACITY FOR:
PRODUCT CATEGORIES 1, 2, 3, 4
05 5
H.P.
08 8 H.P.
10 10 H.P.
11 11 H.P.
PRODUCT CATEGORY 6
42 42" WIDTH
48
48" WIDTH
56 56" WIDTH
59 59" WIDTH
12 12 H.P.
14 14 H.P.
PRODUCT CATEGORY 7
16 16 H.P.
08 8" FURROW WIDTH
20 20
H.P.
12 12" FURROW WIDTH
05 5
CU. FT. CAPACITY
PRODUCT CATEGORY 5
10 10 CU. FT. CAPACITY
26 26" CUT WI DTH 18 18
CU. FT. CAPACITY
30
30" CUT WI DTH
31 31"WIDTH
32 32" CUT WIDTH 38
38" WIDTH
36 36" CUT WIDTH 40
40" WIDTH
42
42" CUT WI DTH 42
42" WIDTH
48 48" CUT WIDTH
. 60
60" CUT WIDTH 44
44" WIDTH
50
50" WI DTH
59
59" WIDTH
ETC.
PRODUCT CATEGORY 6
ST SNOW THROWER
BA
SNOW BLADE
BC = SNOW BLADE
BN = SNOW BLADE
PRODUCT CATEGORY 7
8M BLADE, MID MOUNT
TE
TILLER (BATTERY)
TL TILLER
PL MOLDBOARD PLOW
PR PLOW, REVERSIBLE
DS DISC
HR HARROW
PT PLANTER
CM CULTIVATOR, MID MOUNT
CR CULTIVATOR, REAR MOUNT
WG WAGON,4·WHEEL
DC DUMP CART
RL ROLLER
AR AERATOR
SW SWEEPER
VC LAWN VACUUM
'* IN CERTAIN CASES, THIS MA Y BE CODED WITH AN "X", ny", OR "Z" IN EITHER POSITION. THIS IS TO A VOID DUPLICA-
TION OF V.I.N. NUMBERS WHERE BASIC PRODUCT INFORMATION IS IDENTICAL. EXAMPLE: 85-36MR01
AND 85·36XR01.
1-6
II
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PRE-DELIVERY SERVICE
SECTION 2
B-SERIES, C-SERIES, and D-SERIES Automatic Tractors
Install Front Wheel and Tire Assemblies
Using a suitable hoist or jack, raise the front of the
tractor.
A. If a floor jack is used, center the jack under the frame
assembly behind
the front axle. Use a 2" x 4" piece of
lumber or similar material, long enough to span the
width of the frame, between the jack and the tractor
to prevent damage to the vehicle.
B. If a chain hoist is used, attach the hoist to the front
axle, being careful not to scratch the side of the engine,
hood, or
the axle itself. On C and D-Series tractors, an
alternate hoisting point can be made by installing a
piece
of rod stock (5/8" on C-Series; 3/4" on D-Series)
in the front Tach-a-matic hitch. Be careful not to
scratch the grille.
Install a wheel and tire assembly on each spindle
as
illustrated in Fig. 2-1, 2-2, or 2-3, as appropriate. The
tire valve stem should be to the outside on B-Series vehicles
! and to the inside on C and D-Series vehicles. Correct
wheel end play
is 0 to .015 inch (.4 mm). In some cases it
may be necessary to add or remove a shim washer to
, achieve correct end play.
.015"(Thin) Shim Washer
~~ .050"(Thick) ShimWasher
@1!lI~ O~ Snap Ring
\ CS'foaHUbCap
13t
S
·O.D. Washer
Fig.
2-1 B-Series Front Wheel Installation
~.050"(ThiCk) ShimWasher
1!lI~~Snap Ring
\
C@~UbCap
1 '1t
2"
O. D. Washer
Fig. 2·2 C-Series
Front Wheel Installation
2-'
t050"(ThiCk) ShimWasher
@ @ ... 3'h-16x~BOlt
\ ~ C8~ Hub Cap
1 %" o. D. Washer
Fig. 2-3 D-Series
Front Wheel Installation
Install Footrest (D-Series Only)
Raise the rear of the tractor (see Install Rear Wheel and
Tire Assemblies). Install
the footrests as shown in Fig. 2-4.
Note
that the bolt holding the rear of the mid lift bearing
must
be removed to install the footrest and is replaced after
the footrest is installed. The "L" shaped bracket is in-
stalled at the front of each footrest as shown in Fig. 2-4.
6::'\~Bracket
~Bolts
Footrest
Fig. 2-4 D-Series Footrest Installation
Install Rear Wheel and Tire Assemblies
Raise the rear of the tractor.
A. If a floor jack is used, center the jack under the trans-
mission
case_ Use a 2" x 4" block of wood or similar
material, between
the jack and the transmission to pre-
vent damage
to the transmission case.
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SECTION 2
B. If a chain hoist is used, attach the hoist to the drawbar
hitch on C and D-Series tractors and
to the rear axle on
B-Series tractors.
• B-SERIES
Apply a coating of rust preventative on the axle shafts
(Texaco Compound
"L," Light, Code 1976, or equivalent).
Mount a rear wheel and tire on each axle shaft
as shown in
Fig. 2-5, with the tire valve stem to the outside. Use the
shim washers as required for minimum end play. Lower the
tractor, and remove the jack or hoist.
'~
.015"(Thin)
.050"(Thick}
j Shim Washers
(As Req.'d)
\0~
Fig. 2-5 B-Series Rear Wheel Installation
C AND D-SERI ES
Mount a rear wheel and tire assembly on each axle hub
so
the tire valve stem faces inside on the C-Series and out-
side on
the D-Series. Secure each wheel and tire assembly
with
the lug bolts provided. On C-Series tractors, starting
at the top, tighten every other lug bolt until all are tight.
On D-Series tractors, alternately tighten lug bolts on
opposite sides
of the wheel until all are tight. Torque the
lug bolts to 75 to 80 ft. Ibs. {105 to 112 Nml.
Lower
the tractor and remove the jack or hoist.
Adjust Tire Pressure
Using a low pressure tire gauge, adjust the tire pressure
in all four tires:
PSI
kg/cm2
Mount Steering Wheel
BAND C-SERI ES
Front Rear
12
.85
12
.85
Install the bowed spring washer and plastic spacer over
the steering shaft. With the wheels straight ahead, install
steering wheel so
that the spokes form a "Y" and line up
the hole in the wheel hub with the hole in the steering
shaft.
Insert a
1/4 punch through the hole to hold the steering
wheel
in position. Install the 1/4 x 2 spirol pin by
driving it
in with a hammer; as the spirol pin is driven in, it
should push
the punch out. 2-2
D-SERIES
With the front wheels straight ahead, place the steering
wheel on
the steering shaft so that the spokes form a "Y".
Secure the wheel with a 5/8-18 jam nut. Snap the steering
wheel insert into place so
the "R", inside the wheel, is
straight when viewed from the driver's seat.
Service the Battery
.&CAUTION&
Electrolyte and battery fluid are poisonous and can
be injurious to eyes, skin, and clothing. In the event
of an accident, flush immediately with a solution
of
one part bakin\l soda to four parts water. Notify
physician immediately. If baking soda
is not imme-
diately available, flush affected area with water. Noti-
fy physician immediately.
1. Remove
the battery from the tractor. Never fill
battery with electrolyte with battery installed
in tractor.
2. Use an electrolyte with a specific gravity of 1.260; fill
each cell until
the electrolyte (battery acid) is 1/4 to 1/2
inch (6 to 13 mm) over the top of the separators. DO
NOT OVERFI LL.
3. Place the filled dry charged battery on charge before in-
stalling. Charge at 15 amperes for 30 minutes. After
charging,
top off each cell with electrolyte.
After battery has been
in service, add only low
mineral
content water. DO NOT ADD ELECTRO-
LYTE (battery acid).
~
REAR, (-SERIES
FRONT, B-SERIES
Fig. 2-6 Band C-Series Battery Installation
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4. Install battery in the tractor, making sure the terminal
posts are
positioned properly. Install the battery
hold down assembly. Tighten the nuts only enough
to keep the battery from moving. DO NOT OVER-
TIGHTEN.
5. Reinstall the battery cables as shown in Fig. 2-6 and
Fig. 2-7. Grease all exposed metal surfaces of the
battery terminals.
REAR
,
Fig. 2-7 O-Series Battery Installation
Check Engine Oil Level
Check that the engine oil is at the proper level and
for oil leaks. Engines are filled with SAE 30 oil at the
factory. If the tractor is to be operated in cold tempera-
tures,
it may be necessary to change the oil. Refer to the
Engine Oil Temperature-Viscosity Chart in Section 1.
Check Transmission Oil Level
Check that the transmission oil is at the proper level
! an'd for oil leaks. Oil specifications are:
4-Speed Transmission -SAE
90
8-Speed Transmission -SAE 140
Automatic Transmission -SAE 1 OW-30 to 10W-40
Install Seat (C and D-Series Only)
Mount seat to seat springs with lockwashers and bolts on
C-Series models. The seat springs are secured to the bottom
2-3
SECTION 2~
of seat pivot plate on D-Series tractors. Remove the hard-
ware and re-attach seat springs to top side of seat pivott
plate. See Fig. 2-8.
Fig. 2-8 D-Series Seat Installation
Check Wiring and Attaching Hardware
I
~
)
Visually inspect for any loose connections and tight-
en as required. Check
routing of wires to make sure
they will not be disturbed by any moving part that
could cause a short.
Check that nuts, bolts, and other fasteners are in
place
and tight.
Fill the Fuel Tank
Use a good grade of regular or unleaded gasoline (90
octane or higher). Open the fuel shut-off valve and
check fuel hose and fittings for leaks.
Lubricate Tractor
Grease all lube points as shown in the maintenance
section of the tractor Owner's Manual (front axle, both
front wheel spindles, both front wheels, and steering
gear; on D-Series
tractors, also grease the steering gear
bell
crank). Use No. 2 mUlti-purpose lithium grease.
Test Tractor Operation
A. As applicable, check or test operation of the following:
1. Engine,
choke, and throttle controls
2. Gauges
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! SECTION 2
3. Lights
4.
PTO clutch and brake
5. Lift system
6. Service and parking brakes
7. Transmission clutch
8. Transmission controls
9. Steering
10. Tractor operation
in all speeds forward and reverse
B. Test operation of the safety interlock system. The
engine should NOT start if:
1. a) The clutch pedal is not depressed on manual
transmission models.
b) The brake/return to neutral pedal is not de-
pressed on automatic transmission models.
2. The PTO lever or switch is in the Engaged or On
position.
.
On models so equipped, also check the operation of
the seat switch. With
the engine running and the PTO
engaged, rise off the tractor's seat -the engine should
shut off.
C. On automatic transmission models, check that the
transmission neutral adjustment
is properly set. Oper-
ate
the tractor under full throttle and allow it to
thoroughly warm up. Bring the tractor to a stop
using the brake/return
to neutral pedal. Release the
pedal; if the tractor "creeps" in either direction, set
the neutral adjustment
as described in Section 5.
NOTES
Check Front Wheel Alignment (D-Series Only)
With the tractor's wheels straight ahead, there should
be a small amount (1/16 to 1/8 inch/l.5 to 3 mm) of
"toe·in" adjustment.
If required, adjust the steering as described in Section
8.
Install Drawbar Hitch Pin (C and D-Series Only)
Install the drawbar hitch pin in the drawbar hitch
and secure with a hairpin cotter.
Install Mower Belt Adjustment Bolt (B-Series Only)
Thread the 3/& 16 nut onto the 3/8-16 x 2 full
thread bolt; thread the bolt into the front side of the
mower hanger bracket, located just behind the front axle.
Tighten the nut against the bracket
to secure.
C-161 TWIN
Follow procedure for C-Series.
---~-.~ ..... ---~-~--.--
------- .. -- •.. ~ --_ ... ----- .....
~--- .. --------
---_ ..... _._-----
----_ ... -- .... ---- ... ---~ ------
--_ ..... ----_ ......
2-4
-------------_ ..... _ .. __ .- -_ ..... _ ........_ ..
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,.
GENERAL MAINTENANCE
SECTION 3
MAINTENANCE CHECKLIST
co
,.
III
III III III
=.
=-
< < < <
..
.. ..
co
0 =
-< -< -< -<
;;
III
-
..
'"
-
III
~
0
'"
0
'"
a
~
n
".
:.:
:.: :.:
...
".
C 0 0 0 0
s;:
..
!i
!i
c 0
co
.. ..
~
..
:.:
0
c
~
SERVICE OPERATION
Check:
Engine Oil Level X
Battery Water Level X
Transmission
Automatic
X
Oil Level
Manual
X
Tire Pressures X
Tightness of all
Attaching Hardware
X
Clean Engine Cooling Fins X
Clean Air Filter
B-Series X
C & O-Series X
Lubricate Chassis X
Change Engine Oil (11 X
Replace Engine Oil
Filter (O-Series)(11 X
Inspect Spark Plugs
X
Replace Spark Plug(s) X
Inspect Breaker Points 100 Hours
Replace Air Filter
100 Hours / One Year(2 1
Change Transm ission Oil
(Automatic)
100 Hours / One Year(21
Replace Transmission Oil
Filter (Automatic) (1) 100 Hours / One Year(21
Replace Fuel Filter (O-Series) 100
Hours / One Year (2)
Clean and Lubricate
PTO Clutch (0 -200) 100
Hours / One Year(2 )
(1 ) Refer to te xt for i nitial service interval for new tractors .
(2)
Whichever occurs /irst .
These service intervals are considered MAXI MUM
under normal operating conditions. Increase fre-
quency under extremely dirty or dusty conditions.
3-1
ENGINE OIL
Oil Level
Never overfill
the engine crankcase with oil. The oil
level
must not exceed the "F" level on the dipstick.
B-SERIES
The oil level should be to the top of the oil fill tube.
Fig. 3-1 B-Series Oil Fill and Drain Plugs
C-SERIES
On engines
with oil filler tubes, remove the dip-
stick by twisting
the cap sl ightly and pulling. Engines
without oil filler tubes have a combination filler plug
and dipstick located on the right side of the engine
block.
Fig.
3-2 C-Series Filler Plug Dipstick
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SECTION 3
D-SERIES
Remove
the 0-160 dipstick by twisting the cap
slightly and pulling. The 0-200 dipstick
is removed
by turning
the cap counterclockwise and then pulling.
OIL DRAIN
-..,d~tl.;tti_---- PLUG
Fig. 3-3 0-160 Oil Dipstick and Drain Plug
Fig. 3-4 Oil Dipstick
and Drain Plug
DO NOT
EXCEED
FULL
MARK
Fig. 3-5 Correct Oil Level - C and D-Series
3-2
Be sure to add the same viscosity oil as is presently in the
engine. New tractors are shipped with SAE 30 oil in the
crankcase. It may be necessary to change the original oil
before using
the tractor if the tractor will be operated in
cold weather.
Oil Changes
Failure to change the engine oil (and oil filter on 0-
Series models) at recommended intervals can lead to
serious damage to the engine. This is especially true
when using detergent oils which are designed to hold
impurities
in suspension; when the saturation point
is reached, the oil may suddenly break down to form
a gelatin-like substance which seriously impairs and
can even
stop the flow of oil. Increase the fre-
quency
of oil and oil filter changes if the tractor is
operated under extremely dusty conditions.
Before changing the oil, start the engine and allow it to
warm up. This will allow the oil to flow more freely. Shut
off the engine and remove the key.
After adding
the prescribed amount of oil, check the oil
level. Add oil
as necessary to bring the oil to the "Full"
level in B-Series engines or into the "Safe" range on the
dipstick in C and D-Series engines.
NEVER overfill
the engi~e crankcase with Oil'~he
oil level must not exceed the "F" level on the dip-
stick.
Oil Filter (0-160, 0-200)
The engine in 0-160 and 0-200 tractors is equipped with
a full flow oil filter. The filter should be replaced along
with the engine oil after the first 2 hours of operation.
Thereafter,
the filter should be replaced at 50 operating
hour intervals (every second oil change),
or sooner if the
tractor is operated under extremely dusty conditions.
on FILl Iil
Fig. 3-6 Right Side Engine Baffle Removed, 0-200
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Fig. 3-7 Engine Oil Filter, 0-160
Fig. 3-8 Remove Oil Filter, O-Series
Hand tigbten oil filter only; turn filter until the
rubber gasket contacts
the engine block,
then tighten an additional 1/4 to 1/2 turn. Excessive
tightening or use
of a wrench or other mechanical
device can cause damage to both the filter and the
engine.
Air Filter
Clean the engine air filter on B-Series tractors after
every 25 hours of operation, and after every 50 hours of
operation on C and O-Series tractors (more often if the
tractor is operated under extremely dusty conditions).
Replace dry
type filter elements at 100 hour intervals,
or once a year, whichever comes first. The foam
type ele-
ments used on B-Series vehicles may be serviceableformore
than
100 hours or one year of operation, provided the ele-
ment shows no sign of deterioration and can still be cleaned
satisfactorily.. Replacement intervals must be shortened
when operating under extremely dusty conditions.
To pro-
tect the engine, use only the manufacturer's replacement
filter,
or replacement filters with equivalent specifications.
~------
3-3
SECTION:
To prevent any dirt or other contaminants from
entering
the engine, always cover the carburetor air
horn when
the air cleaner is removed.
B-SERIES
To service the air filter, remove the two screws air
lift
off the complete air cleaner assembly. Remove tit
screen and spacers from the foam element and remo\l
the element from the body of the air cleaner.
8-81
8-111
Fig. 3-9 B-Series Air Cleaners
Wash the foam element in a solution of liquid detel
gent and water. Wrap the foam in a clean cloth am
squeeze dry. Saturate the element in clean engine 0)
(same viscosity as is presently being used in the engine
and squeeze to remove excess oil.
When assembling, make certain
the lip of the foarr
element extends over the edge of the air cleaner bod"
C-SERIES ANO 0-200
The dry type air filter element installed on C-Serie
and 0-200 engines is cleaned by tapping it lightly on
flat surface
to remove loose dirt particles. Replace thl
element if dirt does
not drop off easily. DO NOT was;
elements
in any liquid or attempt to blow dirt off witt
compressed air as this will puncture the filter elemen·
Fig. 3-10 C-Series
and 0-200 Air Cleaner
-------------
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SECTION 3
Check the following when installing a new or serviced
element:
1. Back plate must be securely tightened to carburetor.
Replace back plate if
bent or cracked.
2. Gasket surfaces
of element must be flat against back
plate cover
to seal effectively.
3. Wing nut must be finger tight DO NOT OVER-
TIGHTEN.
The
0-200 and some C-Series engines are equipped
with a precleaner slipped over
the dry element, which
traps much of
the dirt and prevents it from entering the
dry element. Servicing of the precleaner is accomplish·
, ed by washing it
in soap and water, rinsing, then squeez·
ing
out the excess water and allowing it to dry. DO
NOT 01 L THE PRECLEANER.
0-160
A dry type element with precleaner is used on the
0·160's engine. Cleaning of the filter element, plus the
checks to make when installing a new or serviced ele-
ment, are the same
as described in this section under
"C-Series
and 0-200." The precleaner is serviced as
described in the following paragraph.
To clean the precleaner, wash
in water and detergent,
remove excess water by squeezing like a sponge and
allow
to thoroughly dry. Distribute three tablespoons
of SAE 30 engine oil evenly around the precleaner.
1 W.,SH
2 SQI,lEEZE DAY
3 CO"',. WITH 011 ..
Fig. 3-11 0-160 Air Cleaner
BATTERY CHECK
A hydrometer is used to measure specific gravity of the
battery. The water level in the battery should be at normal
height when a hydrometer reading
is taken. Hydrometer
readings should never be taken immediately after water has
been added. The water should be thoroughly mixed with
the electrolyte, by charging, before
hydrometer values are
reliable.
3-4
FULLY CHARGED
Acid in water gives electrolyte
specific gravity of 1.260.
END/LIFE
Battery half discharged.
More
acid in plates, less in
electrolyte. Starting
failure likely.
GOING DOWN
As battery discharges, acid
begins
to lodge in plates.
Specific gravity
drops.
DISCHARGED
Acid almost entirely in
plates, leaving weak
electro·
Iyte behind. Specific gravity
lower,
almost that of water.
Fig. 3-12 Battery Chemistry
In reading a hydrometer, the barrel must be held verti-
cally. Draw just enough acid into
the barrel to lift the
float. The float should
not touch any part of the barrel.
High floet Ileft) means high
specific gravity. Low float
means low specific gravity.
EYE
LEVEL
Correct method of
reading hydrometer.
Eye
on lavel with
liquid surface. Dis-
regard curvature
of liquid against
glass parts. Do
not
tilt hydrometer
while reading.
Keep float vertical.
Fig. 3-13 Reading Hydrometer
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Fuel Filter (O-Series)
D-Series tractors are equipped with an in-line fuel filter.
This
fi Iter should be replaced after each 100 hours of oper-
ation
or at 1 year intervals, whichever occurs first.
Fig. 3-14 D-160 Fuel Filter
Fig. 3-15
0-200 Fuel Filter
TUNE UP PROCEDURE
Spark Plugs
Replace spark plugs that are not in good condition.
Never sandblast, wire brush, scrape,
or otherwise service
spark plugs
in poor condition. Best results are obtained
with new plugs.
Always check
the spark plug gap before installing new
plug(s)
or reinstalling the original plug(s}. Use a spark plug
gap gauge
to adjust the electrode air gap.
Tractor Model
B-Series
C-Series & D-160
D-200
Plug Gap
.
030 in. 1.8 mm}
.025 in. (.6 mm)
.035 in. (.9 mm)
Tighten spark plug(s}
to 22 ft. Ibs. (30 Nm).
3-5
SECTION ~
Fig. 3-16 Spark Plug Gap Adjustment
Points and Condenser
B-SERIES
The breaker points
on Briggs & Stratton engines ara
located
under the flywheel. Refer to Briggs & Strattor
Service and Repair Instructions (Briggs & Stratton Par l1
Number 270962) for correct flywheel removal pro.
cedures.
Fig. 3-17 B-Series Breaker Points
C-SERI
ES & 0-200
1. Remove the breaker point cover.
2. Turn the engine over until the breaker points are!
fully opened.
3. Check
the condition of the point surfaces. Always;
replace
burned or pitted points. Dirty or oily points;
can be cleaned with a
cloth, but make sure no par-·
ticles
of lif)t remain between point surfaces.
4. Measure the gap with a feeler gauge. When the points;
are fully open,
the gap should be .020 inch (.5 mm) ..
Adjust points as necessary.
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SECTION 3
Fig. 3-18 C·Series Breaker Points
Fig. 3-19
0·200 Breaker Point Adjustment
Under normal operating conditions, a certain
amount
of buildup or metal transfer between the point surfaces
will occur. If this occurs too frequently and becomes
excessive,
the condenser may be at fault.
0-160
The points are located on the top of the front side of
the engine inside a breaker box.
To check the breaker points, with a cold engine, re-
move the two nuts holding the heat baffle to the top of
the engine and remove the heat baffle. Use the following
procedure to check and adjust breaker points gap.
1. Remove the two screws and the breaker box cap.
2. Remove the two spark plugs so the engine can be
turned by hand. Check the condition of the spark
plugs
at this time.
3. Turn the engine over until the breaker points are
fully opened.
4. Check
the condition of the breaker point surfaces.
Always replace burned, or pitted points. Dirty or oily
points can be cleaned with a cloth,
but make sure no
particles of lint remain between point surfaces.
5. If point replacement is necessary, replace the breaker
points with a new set. Adjust point gap to an initial
setting
of .023 inch (.6 mm). 3·6
6. Remove the air intake hose that connects to the
blower housing. This provides an access to viewing
the timing mark.
Fig.
3·20 0·160 Breaker Point Gap
7. Check
the ignition timing by connecting a continuity
light across the ignition breaker points. Connect one
lead from the light
to the negative side of the ignition
coil (terminal
that leads into the breaker box to the
breaker points). Ground the other lead of the light to
a good ground on the engine.
8. Turn the engine crankshaft counterclockwise until
the points close. The light should now be on.
9. Slowly turn the crankshaft clockwise. Adjust the
point gap so the lamp goes out as the timing mark on
the flywheel aligns with the 25
0 BTC (before
top
center) mark.
REMOVE HOSE AND VIEW
TIMING MARKS THROUGH
THIS HOLE
CORRECT TIMING
25
0
BTC COLD SETTING
Fig.3·21
0·160 Timing Mark
Under normal operating conditions, a certain
amount
or buildup or metal transfer between the point surfaces
will occur. Ilf this occurs too frequently and becomes
excessive, the condenser may be at fault.
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Timing
B-SERIES, C-SERIES, AND 0-160
Ignition timing on the B, C, and D-160 models is con -
trolled by the point gap setting. Refer to Points and
Condenser.
0-200
The ignition timing should be checked each time the
breaker point gap is altered.
To check the ignition timing connect an automotive
type timing light to the high tension lead of the left
spark plug. Consult the manufacturer's instruction for
exact connections of the particular type of timing light
used.
Rotate the engine until the "SP" mark is observed in
the timing sight hole; using a piece of chalk, mark the
line for easier reading.
Fig. 3-22
Timing the 0-200
Start the engine and run at 1/2 throttle or above.
Aim the timing light into the sight hole; the light should
flash just as the "SP" mark is centered in the hole. If
the light flashes before the mark is centered, the timing
is excessively advanced . If the light flashes after the
mark is centered, the timing is excessively retarded.
To adjust, loosen (DO NOT REMOVE) governor
flange mounting capscrews and rotate the governor until
the timing mark is centered exactly in the sight hole.
Retighten flange mounting screws after exact timing is
achieved.
3-7
SECTION ::
Fig. 3-23 Governor Flange Mounting Screws
Carburetor Adjustment
Carburetors are adjusted in the factory and should nott
have
to be reset. If however, one of the following con-
ditions is noted, the carburetor should be readjusted im-
mediately as continued operation with incorrect setting cam
lead
to fouled spark plugs, overheating, excessive valve
wear, or other problems. If black exhaust smoke is noted"
check the air cleaner first - an "overrich" mixture is usu-
ally caused by a poorly serviced, clogged air cleaner element"
not an improperly adjusted carburetor.
CONDITION
A. Black, sooty exhaust smoke, engine sluggish.
B. Engine misses and backfires at high speed.
C. Engine starts, sputters, and dies under cold weather
starting.
D. Engine runs rough or stalls at idle speed.
POSSIBLE CAUSE/PROBABLE REMEDY
A. Mixture too rich - readjust main fuel needle.
B. Mixture too lean - readjust main fuel needle.
C. Idle speed too low or improper idle adjustment -
readjust speed, then idle fuel needle if needed.
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