Jinma series tractor. Manual - part 4

 

  Index      Tractors     JINMA SERIES TRACTOR (200, 204, 250, 254, 300A, 304A) - service repair manual

 

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Jinma series tractor. Manual - part 4

 

 

11
C. When switch starting, set the decompression lever to decompression position too.
Turn the
starting switch clockwise to "start" position, thus the engine is driven by starter, the starter
must not be operated more than 5-10 sec. for each start. Only after an interval of not less than
2 minutes can the engine be started again.
D. When switch starting is successful, turn the starting switch counterclockwise to the
charging position of battery.
E. It is not necessary to decompress the engine while switch starting in summer. Filling
the radiator with hot water or the oil sump with heated engine oil can be used as starting aids
in winter.
2) Starting the tractor
After the engine is started, run it at moderate speed for 5-10 minutes for warm-up itself, after
thewater temperature reaches above 70
, tractor can be started according to following
steps:
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A.Lift the implement.
B.Depress the clutch pedal, put the gear shifting lever into the desired lower gear, release
the parking brake lock pawl of the brake pedal.
C.Observe the environment to confirm that there are no obstructions on the road and
sound the horn to call attention to the people.
D.
Increase the engine speed gradually and simultaneously release clutch pedal so as to
make the tractor start off smoothly
.
3) Operating the tractor
A.During operation make sure that readings on gauges are normal.
B.It is prohibited for operator to place his foot on clutch pedal so as to protect clutch from
beingdamaged because of semi-engaged condition of clutch.
C. In transportation or running on highway, lock the left and the right brake pedals
together with brake lock plate.
D.
In field operation, one-side braking can be used to reduce turning radius, but it is
prohibited to use one-side braking for sharp turning when the tractor is running at high
speed or is used for transportation on highway, so as to prevent overturning and protect
components from being damaged.
E.
Proper speed should be selected to get best productivity. Table 2-3 shows the speeds
for various operations.
Table 2-3 Speeds for different operations
Operation
Gear
Creeper
Ditching
L1st
Rotary cultivation
L2nd
Rotary cultivation, transportation
L3rd
Ploughing, harrowing, drilling
H1st
Ploughing, harrowing, drilling
H2nd
Transportation
H3rd
Transportation
R1st
To attach implements
R2nd
To attach implements
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4) Stopping the tractor
A.
Throttle the engine down to lower the speed of the tractor.
B.
Depress the clutch pedal quickly and shift the gear-shifting lever to neutral position.
C.
Release the clutch pedal and let engine run idle.
D.
Depress the brake pedals to stop the tractor, then lock the pedals with the lock pawl.
Note:
In case the tractor has to be stopped suddenly, clutch pedals and brake pedals
should bedepressed simultaneously. It is prohibited to depress the brake pedals only, which
will damage the parts.
E.
If the tractor is to be parked for quite a while, the engine should be stopped. After the
engine has been unloaded, it should run at low speed for some time until the cooling water
temperature drops to
70
or lower, then pull out fuel cut-off rod to bring the engine to a stop.
Note:
It is prohibited to stop the engine at once when its temperature is very high, or to
stop the engine with decompression mechanism.
F.Turn the preheating/starting switch to "O" and pull out the key. If the tractor is going
to be stored, turn off the fuel tank cock.
G.If the tractor is stopped when the ambient temperature is below 0
, screw of the
radiator cap and turn on the water-drain cock on the bottom of the radiator and on the
cylinder block to drain out water at idle engine speed so as to protect the body and radiator
from being frozen (not includingadding anti-icing fluid).
5) Safety regulations for operation
Safety regulations are very important for protecting drivers and tractors from hazard.
They should be observed strictly in operation.
A.
Inspect carefully the working condition of the engine and main components, and listen
to whether there is abnormal sound or noise. Especially observe the technical state of clutch
and brake. Check and tighten the bolts and nuts on main components of the tractor.
B.
Make sure that there is no people or obstacle around the tractor and press horn
button beforestarting off the tractor.
C.
Don't go up and down the tractor during running. Never make check or repair under
the tractor while the engine is still running.
D.
Before the tractor goes up or down a slope, proper speed should be selected and don't
coast, turn sharply or shift gears while driving down a slope.
E.
In transportation, left and right brake pedals must be locked together. One-side
braking can not be used for sharp turning when the tractor is running at high speed or with
full load.
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F.
If front end of the tractor rises up in operation, throttle down the engine, disengage the
clutch and reduce the load to protect the tractor from longitudinal overturning.
G.
If the engine runs away, immediately pull out the fuel cut-off rod, move
decompression lever to "decompressing" position or plug up fresh air into the engine instead
of disengage clutch.
H.Lightening equipment must work well during operation at night.
I.Control lever should be placed in the neutral position when the four-wheel drive tractor
is running idle or being used for transportation.
6. Control and operation of the working devices
1)Control and operation of PTO
PTO can be engaged and disengaged by means of operating the PTO control lever on the
right side of the transmission box.
The speed of PTO is 540 rpm or 540 rpm and 1000rpm. When push down (from front and
upper side) the control lever, PTO is engaged; while pull upper the control lever, PTO is
disengaged. The operation steps are as follows:
A.
Remove the PTO safety shield and drawbar, couple the desired driven machine to the
PTO shaft.
B.
Put the gear shifting lever at the neutral position.
C.Depress the clutch pedal fully, then shift the PTO control lever to the "engaged"
position.
D.Release the clutch pedal slowly and the driven machine will run. First let the driven
machine run at slightly open throttle for a while to ensure that nothing is wrong with the
driven machine. Then make the throttle wide open and put the driven machine into operation.
Note: When the tractor with implement travels for a long distance, should shift the control
lever to neutral position to cut off the power so as to avoid damaging the implement and
causing body accident.
2)Control and operation of hydraulic hitch system
Hydraulic hitch system serves to attach, lift and lower implement, as well as adjust and
maintainthe working position of implement, so as to meet different requirements of various
implements and operations.
Move the control lever of the distributor to raise and lower the implement.
According to the type of work to be done, type of implement used and field condition,
hydraulic hitch system provides various functions, so that the satisfactory work quality is
obtained.
A.Position control
In position control, by means of moving control lever of the distributor, the position of

 

 

 

 

 

 

 

 

 

 

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