Advertisement
HOW TO GET THE MOST FROM YOUR NEW SELF-PROPELLED MOWER
GENERAL
The purpose of this sheet is to further acquaint the owner of
this Self-Propelled Mower with information which will enable him
to get from his unit the most efficient and maximum service life.
Because this type of mower is propelled by a mechanism which
consists of a bevel and pinion gear, lubrication is of prime im¬
portance.
The bevel and pinion gears are made of sintered iron
and they are housed in a small gear box mounted on the center
rear of the mower deck.
This box is lubricated at the factory with
two ounces of Alemite Alduralube Heavy grease.
The grease in
this box should be maintained at a level which completely covers
the pinion gear (the smaller gear on the bottom of the gear box).
The gear box should never be permitted to run dry. Periodic in¬
spection is a necessity. Should additional grease be needed, a
high heat, fibrous wheel bearing lubricant should be used. Cup
grease or gun grease will last no longer than a single mowing. If
grease is needed often, the grease being used is of the wrong
type.
It is suggested that Alemite Alduralube Heavy, Alemite
Temprite No. 2 or an equivalent type and quality grease be used.
This mower should be broken in following the procedure de¬
scribed in the break-in instructions.
The added effort here will
double the service life of the unit. Particular attention should be
paid to the notes on alignment.
When operating this mower, unnecessary or excessive engaging
of the drive pinions with the wheels should be avoided. This is
achieved by minimizing the raising and lowering of the handle dur¬
ing the mowing operation. Failure to observe this operating rule
can reduce the service life of the rear tires and drive pinions sub¬
stantially. When engaging the self-propelled mechanism, a slight
forward push on the mower as the drive pinions and the gear tread
tires mesh will add to smoother and quieter operation.
In addition
to a smoother operation, it will add substantially to the service
life of both the tires and the drive pinions.
HANDLE ASSEMBLY PRECAUTIONS
Although the handle is of a simple design, difficulty has been
encountered in its assembly. Certain precautions concerning its
assembly must be heeded.
The handle must be assembled as
shown in the diagram. Trouble arises when certain parts are put
together improperly.
A. Mount the lockout finger on the right side of the bracket.
See illustration.
B. Lockout control lever must be mounted as shown in the
illustration.
C. The lockout control lever bracket must be mounted with the
projection upward as shown in the illustration.
D. If lower handle is too narrow to lock into handle bracket,
spread as needed.
BREAK-IN
INSTRUCTIONS
1. Before starting the engine, lubricate all the bronze bearings
on the drive shaft. The same oil which is used for the engine
may be used for this.
2. Check lubricant in the gear box. This must be maintained half
full at all times and should be checked prior to each mowing.
The gear box is packed at the factory with Alemite Alduralube
Heavy or Alemite Temprite No. 2. It is suggested that this or
an equivalent type and quality fibrous high heat wheel bearing
grease be used in maintaining this mechanism.
3. Check the lockout control for proper operation. See HANDLE
ASSEMBLY PRECAUTIONS.
4. Check drive assembly alignment. When the lockout control lever
is moved to the Self-Propelled position (as shown in diagram),
the black nylon drive pinions should mesh simultaneously with
the gear tread tires.
The lockout control lever should move
from Self-Propelled position to Free-Wheeling position easily.
If either or both of these conditions do not exist, the alignment
is incorrect. It may be remedied as follows;
A. Loosen the four Sems hex head cap screws which hold the
tie bracket assemblies to the deck.
B. Loosen the carriage bolt which secures the lockout control
lever bracket to the handle.
C. Move the lockout control lever from Self-Propelled to Free-
Wheeling position several times.
D. Place the lockout control lever back into Self-Propelled
Position.
E. Turn both rear wheels until the drive pinions mesh with
gear tread tires.
F. Tighten all Sems hex cap screws.
G. Move lockout cont
I lever to Free-Wheeling position and
tighten the carriage bolt which secures the lockout control
lever bracket to the handle.
5. With the lockout control lever in Free-Wheeling position, start
the engine and allow it to run in a stationary position for about
fifteen minutes at a slow speed.
This will allow the moving
parts to break in gradually.
6. If, after a few minutes of operation, the bearings and horizontal
drive shaft become excessively hot, recheck the drive assem¬
bly alignment.
7. Proper lubrication must be maintained at all times.
TROUBLE SHOOTING
If the mower fails to propel itself, the trouble may be located
in the following manner. Ground the spark plug wire. Slowly crank
the engine with the starter. If the starter is of the impulse type,
set the starter control on "START" or "RUN" position.
When
the crankshaft of the engine turns, note the following:
If. . 1. The drive shaft and the drive pinions rotate but the drive
pinions do not drive the wheels . . check the drive assem¬
bly alignment.
2. The drive shaft rotates but the drive pinions do not. . check
the roll pins in the drive pinions or the drive pinions.
3. The drive shaft does not rotate. . remove the upper drive
frame cover and the gear box cover.
4. The bevel gear and pinion gear operates but the drive shaft
does not. . check the roll pin in the bevel gear.
5. The pinion gear rotates but the bevel gear does not. .check
for worn bevel and/or pinion gear.
6. Neither the bevel or pinion gear rotates ,. check for ob¬
struction between bevel and pinion gears.
If nothing is
found, remove the blade assembly and air flo shield.
7. The driven (large) pulley rotates.. check for sheared or
missing key in the driven pulley. ■
8. The driven pulley does not rotate due to broken dr defec¬
tive "V" belt. . check pulley alignment (drive pulley, driven
pulley and idler pulley must be on an even plane with each
other) and replace belt.
9. The driven pulley does not operate due to improper idler
pulley operation (the idler pulley must be under spring ten¬
sion and it must revolve freely). . repair or replace idler
pulley.
10. The drive pulley does not rotate . . check for loose or miss¬
ing set screw.
The set screw should be treated with a nut,
bolt and screw sealant (Lock it, Lock tite, etc.). The set
screw should tighten into a "spot" on'the engine crank¬
shaft.
REPLACING BEVEL AND PINION GEARS
1. Remove spark plug wire. To prevent spillage, drain gasoline
and oil from the engine.
2. Remove the entire blade assembly. Remove the air flo shield.
3. Remove the cover top drive frame assembly.
Remove gear
box cover.
4. Remove roll pins from drive pinions and bevel gear.
5. Carefully remove the belt and large pulley.
CAUTION: Do
not damage pulley.
6. Remove pinion shaft assembly from gear box.
7. Replace new pinion shaft assembly in gear box.
8. Slide pulley onto new pinion shaft with the large hub towards
the bottom of the mower (see illustration).
THE PULLEY
MUST SLIDE ONTO THE SHAFT EASILY.
If it does not do
so, check the Woodruff key.
It must be assembled into the key
seat straight and it must be free from burrs.
Correct the Wood¬
ruff key so that the pulley goes on without any undue pressure.
9. Replace "1/" belt and install air flo shield.
10. Loosen the four Sems hex head cap screws.
11. Replace the drive shaft. Be sure all parts are positioned as
shown in the illustration.
12. Secure bevel gear and drive pinions with roll pins.
Use the
proper length pins for each (long pin for bevel gear. .. short
pins for drive pinions).
13. Place lockout control lever in Self-Propelled position.
Move
rear wheels until the drive pinions and gear tread tires mesh
completely. Tighten all four Sems hex head cap screws.
14. Replace blade assembly.
15. Service gear box with the proper grease and lubricate the
bronze bearings.
16. Service the engine with gasoline and oil and replace the spark
plug wire.
FORM NO. 770-1B46E
Advertisement
