Westerbeke 20B TWO Manual de Instalação descarregar pdf (Página 47)

ENGINE

ADJUSTMENTS

NOTE:

WESTERBEKE recommends that the following

engine adjustments

peiformed

by a competent engine

mechanic. The information below is provided to assist the

ENGINE

IDLING

SPEED

The engine idling speed is pre-set at the factory but once the

boat is operating in the water other variables such

pro-

peller size, shaft length, and

the transmission can affect the

idle speed.

The normal idle speed for these engine models is

1000-1200

rpm at normal engine operating temperatures. Where ever in

this rpm range the engine operates the smoothest, does not

stall when the throttle is restarted and no damper chatter is

THROlTlE

.CONTROl

lEVER

produces. ·

STOP

CONTROL

CABL

ADJUSTING

THE

IDLE

SPEED

1. Loosen the locknut on the idle adjustment bolt on the

fuel injection pump.

2. Adjust the bolt so that the throttle control lever will hold

the engine at a quiet idle.

(1000-12000 rpm)

3. Tighten the locknut.

4. Race the engine several times to ensure the idle speed

remains as set.

OPTIONAL

FUEL

RUN/SHUT-OFF

SOLENOID

The fuel run solenoid is mounted in a threaded hole on the

engine's block

just

aft

and below the engine's injection

pump. Proceed as follows when installing a replacement

new fuel run solenoid.

Visual access to the fuel injection pump's fuel rack

needed.

obtain this, remove the shut off lever and gasket just

below the fuel injection pump.

2. Thread the locknut onto the solenoid and then apply a small

amount

Teflon

sealant to the threads on the solenoid.

3. Thread the solenoid into the hole on the engine and

observe the solenoid plunger through the cover opening.

Allow the plunger to contact the fuel rack and move fully

into the injection pump.

not thread further so as to

push the plunger into the solenoid.

4. Back the solenoid out

114

- 1/2

a tum and secure it in

position with the locknut.

LOCKNUT

TORQUE

VALUE

28.9-36.2

FT-LB

(4.0-5.0

M-KG)

5. Properly connect the three electrical leads from the

solenoid. Two

the connections plug into the engine

harness and the third grounds to the engine block at an

adjacent inboard threaded hole with an 8mrn bolt.

6. Re-assemble the shut-off lever with gasket and test run the

unit.

Make

certain

the unit stops when the solenoid is

de-

energized.

it does not and only goes

idle. Thread the

solenoid

1/8

1/4

turn till shut-off

obtained.

Engines & Generators

...,LOCKNUT

FUEL

RUN

SOLENOID

1 2 ... 42 43 44 45 46 47 48 49 50 51 52 ... 71 72

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Westerbeke 20B TWO Manual de Instalação Página 47

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