Installation Instructions

ManualsBrandsKubota ManualsMiscellaneousB2400

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B1700·B21 00·B2400

WSM,

11770

1

ENGINE

0087F028

(11)

Speed

Control Lever

(12) Idle Limit Spring

(13)

Fuel

Limit Adjust Bolt

•

At

start

As

no centrifugal force

is

applied

to

flyweight

(7),

low

tension

of

start spring (1) permits control rack

to

move

to

the starting position, supplying the amount

of

fuel required

to

start the engine.

•

At

idling

Setting

speed

control lever (11)

to

the

idling

position during engine

rotation

permits

the

low

tension

of

governor spring 2

(3),

start spring (1) and

idle

limit

spring (12)

to

balance the centrifugal force

of

flyweight

(7)

without

activating

high

tension

governor spring 1

(2).

In

this way, the fuel injection

rate

can

be

controlled

to

ensure stable idling.

•

At

high

speed

running

with

overload

Governor spring

1

(2)

and 2

(3)

control

the

fuel

injection rate.

To

maintain

the

required engine

speed,

fuel

is

supplied according

to

the

speed

control

lever setting

and

load

by

balancing the tension

of

governor springs 1 and 2

with

the centrifugal force

of

flyweight

(7).

In

addition, idle

limit

spring (12) provides stable

engine rotation.

4

8

0087F029

13

5

• During overload

At

load increases, the engine speed decreases,

reducing the flyweight's centrifugal force. Governor

springs

1

(2)

and

2

(3),

therefore, pull fork levers 1

(4)

and 2 (5), increasing the fuel injection

rate

and

maintaining engine

speed.

If

engine

speed

decreases

due

to

a further increase in load, fork lever 2

(5)

will

come in contact

with

the fuel

limit

bolt, stopping a

further increase

in

the fuel injection rate.

Torque spring

(8)

incorporated in fork lever 1

(4)

moves

the lever

in

the direction

of

fuel injection rate

increase, thereby boosting

torque

and

providing

greater engine output.

(14) Control Rack

Pin

1-M17