CHOKE CONTROL
Choke control activates a "butterfly" valve in car
buretor. When choke is partially or completely closed,
less air is admitted to engine. This results in a higher
fuel�to-air (richer) mixture that is easier to ignite whe-n
engine is started cold. Warmer engines may not need
choking.
WINTER OPERATION,
417 MODELS
A special air intake system is used. A decal
on engine gives instructions on how to set up
air intake for winter use.
Purpose of this system is to help prevent a
chance of carburetor ic'ing when tractor is op ..
erated in near-freezing, high humidity weather.
In Summer position outside air is drawn direct ..
Iy into air cleaner. In Winter posHion heated out ..
side air is drawn in from around muffler.
Place air intake in Winter position at begin ..
ning of snow season. Return
'it
to Summer posi ..
tion in Spring.
FUEL SPECIFICATION
,&,CAUTION ,&,
Handle fuel with care - it is highly flam
mable. Use only approved fuel container. Never
add fuel while engine is running. Fill fuel tank
outdoors with extreme care. Never fill fuel tank
indoors. Replace gasoline cap securely and wipe
up all spilled fuel.
For convenience and to minimize chance of
fuel spills, it is recommended that a large funnel
be used when refueling tractors with underseat
fuel tanks.
When tractor requires refueling, fill tank with a
good grade
(85
octane minimum) of regular gasoline.
Leaded or unleaded regular may be used. Do
not
intermix regular and unleaded gasolines. Do
not
mix
oil with gasoline. Use of gasohol fuel is not recom�
mended 'by either of these engine manufacturers.
In general, use of unleaded fuel will reduce build
up of combustion deposits in engine and contributes
to long valve life. It is suggested that leaded regular
gasoline be used for first
25
hours of operation, while
piston rings are seating, and unleaded fuel thereafter.
OIL SPECIFICATION
To protect your tractor's engine,. check oil level be
fore each use. On
3 1 0, 3 1 2, 4 1 4
and
4 1 6
models,
engine is equipped with a low oil safety switch and
will not allow engine to start when oil is low or out.
Oil indicator light will be on when oil is low or out of
oil and key switch is in start position.
On
4 1 7
models, engine is equipped with a low oil
pressure switch. Engine will start and run when light
flashes and oil pressure is low.
Complete information concerning recommended
oils and how to check oil level is given in "Maintain
ing Your Tractor" section of this manual.
CORRECT AUTOMATIC
. TRANSMISSION OPERATION
During cold weather
I
start engine with park ..
ing brake engaged and transmission clutch lever
disengaged. Run engine for at least two minutes
to allow engine to warmup; engage transmission
clutch with engine at full throttle. For tempera
tures between 0° and 30°F ( 18° and -2'C
)
al
low transmission to run in neutral for 5 minutes
before attempting to set unit into motion. For
temperatures below O°F (_ 18°C) allow trans
mission to run in neutral for 10 minutes before
attempting to set unit .in motion. Failure to do so
may result in extensive internal transmission
damage.
TO GO FORWARD
,&,CAUTION ,&,
Before tractor will move either forward or
backward, parking brake must be disengaged.
ALWAYS depress brake/return to neutral pedal
when disengaging parking brake.
Motion of your tractor is controlled by a single
"Motion Control lever". To go forward, simply push
lever forward. Farther forward lever is pushed, fast
er tractor will go.
,&,CAUTION ,&,
For safe operation, never mOve motion control
lever too rapidly, especially on grades.
By adjusting motion control lever, forward speed of
tractor can be regu.lated
without
adjusting engine
throttle control. For heavy pulling, moving control
lever toward neutral reduce.s tractor ground speed
and increases pulling power as shifting to a lower
gear with a mechanical transmission . .
TO GO BACKWARD
To reverse motion of tractor, return motion control
lever to neutral position, and pull lever back. Farther
back lever is pulled, faster tractor will go in reverse.
,&,CAUTION ,&,
For safe operation, never move motion control
lever too rapidly, especially on grades.
By adjusting motion control lever, reverse speed of
tractor can be regulated
without
adjusting engine
throttle control.
TO STOP
Stopping tractor from either forward or reverse
direction can be achieved by one of two methods:
-8-
1.
Return motion control lever to its neutral posi
tion.
2.
Depress brake pedal.
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