Lehman SP135, Owner'S Manual

Page: 7 / 29

6
Controls, Starting Stopping Engine
No amount of engineering ingenuity or care in manufacture can substitute for the need of knowledge on the operation
and avoidance of mis-use by the operator. It is important to be familiar with all controls
so as to know how to
properly operate your engine.
Refer Fig. 1. To stop engine, the stop lever should be moved as far as it will travel towards the front of the engine
and held until engine is fully stopped. This lever cuts off the supply of fuel to the injection pump. (NOTE before
shutting down engine it should always be allowed to idle for about two minutes, particularly after extended periods
of cruising
-
This is particularly important with Turbo and Turbo lntercooled engines).
Engine speed control is the longer lever at side of injection pump (Fig. 2.) Moving toward front of engine increases
engine speed.
An excess fuel device permits additional fuel to be supplied by the injection pump to assist in
from cold. This device is fully automatic in operation.
NOTE: All engines are equipped with an
electric shut down solenoid. To stop press
stop button until engine stops running, then
release button.
Injection Pump Controls
1.
Stop Lever
2. Speed Control Lever
starting the engine
Starting all Naturally Aspirated Engines
To start engine when cold
-
make certain that transmission is in neutral position and that all boat accessory
equipment (bilge pump, extra alternator or generator, hydraulic pump, winch, etc.) is disengaged. Check that engine
stop lever is fully towards rear (flywheel end) of engine. Set throttle lever to
open position. Press starting button
to operate starter. As soon as engine starts, release starting button to operate speed control lever to warm-up
(idling) speed of
800
RPM. If engine fails to start within 5 seconds, release starting button. Try again after
allowing sufficient time for all moving parts to stop. Once engine has started, it should be allowed to reach 170°F
before full load is applied.
To restart engine when warm, same procedure as above except set speed control lever to approximately mid-point
of its travel.
Starting all Turbocharged
E
Serious damage to the turbocharger bearing can result from recommendations
are not observed.
Prior to the first start after a turbocharger has been newly installed or if for any reason the oil supply to the
turbocharger has been disconnected, you should insure that the turbocharger housing is filled with engine oil before
reconnecting the oil feed pipe. In these circumstances, or in cases where the engine is being started for
time after an oil change or after a period of
4
weeks or more without use, the following procedure must be used;
1) Engage either manual or electric stop control
2) Crank the engine with the starter motor for 15 seconds
3)
Disengage stop control
4)
Start engine in normal fashion and allow to idle for
30
seconds minimum before applying load
This ensures an adequate oil supply to the turbocharger bearing, The engine should be allowed to idle, without
load, for 2 minutes prior to shut down to enable the oil to dissipate the heat from the turbocharger bearing.