Operating And Maintenance; Starting The Engine; To Operate The Starting Aid; Earlier Heat Start Switch - Perkins 4.108 Workshop Manual

SECTION C
Operating and Maintenance
Starting the Engine
If the weather is warm or the engine has only been
stopped for a little while, place the accelerator in the
fully open position and engage the starter motor by
turning the starter switch in a clockwise direction to
the "HS" position (See Fig. C.1).
If the battery is well up, enough to turn the starter
motor quickly, the engine should start.
Always be sure that the starter pinion and flywheel
have stopped revolving before re-engaging the starter,
otherwise the ring or pinion may be damaged.
C1
1. Off Position
2. Run Position
3. Heat Position
4. Heat and Start Position
To
Aid
In cold weather the procedure for the use of this
equipment is as follows:-
Ensure that the engine stop control is in the "run"
position.
Turn on the fuel supply tap of the starting aid reser-
voir, where fitted.
Tum start switch in direction to "H" position for fifteen
to twenty seconds.
As soon as the engine starts, the switch should be
returned to the "R" position, and the tap on the start-
ing reservoir, when fitted, turned off.
NOTE: The above procedure is not necessary when
the engine is hot. To re-start, turn the switch in a
clockwise direction to the "HS" position which will
engage the starter motor.
Earlier Heat Start Switch
The cold start switch fitted to earlier engines is shown
in Fig. C.2.
With this switch, starting a warm engine is effected by
turning the switch in a clockwise direction to the "S"
position.
In cold weather, the switch should be turned to the
"H" position for fifteen to twenty seconds and then to
the "HS" position in order to engage the starter motor.
As soon as the engine starts, the switch should be
returned to the "0" position.
Where this type of switch is used, it was customary to
have a separate switch for the electrical circuits and
this should be turned on before starting the engine
and turned off after stopping the engine.
With accelerator in the fully open position, turn the
C2
switch a further clockwise movement to the "HS"
position thereby engaging the starter motor.
If the engine does not start after fifteen seconds, return
switch to "H" position for ten seconds and then re-
engage the starter motor.
1. Off Position
2. Start Position
3. Heat Position
4. Heat and Start Position