Day-to-Day use of a Stuart Turner Marine Engine

Before starting
In addition to normal pre-start, checks, if a centrifugal clutch is fitted, see that the brake is tightened in the ‘OFF’ position. If there is a petrol pump, operate the hand lever a few times. Don’t ‘tickle’ the carburettor.

Starting Stuart Turner engine
Close the choke by pulling the knob; it’s not self locking. Set the throttle to about one quarter open. Start the Stuart Turner engine by cranking, opening the choke as soon as the engine fires.

On electric start engines, switch to ‘run’ or ‘charge’ – the warning light is on in either position. Press ‘start’ button – the warning light goes out only in the ‘charge’ position, when the engine fires. Don’t allow the engine to race.

An engine which has been flooded with fuel will need to have its spark plugs cleaned before it will start. A flooded crankcase may be drained from the drain plug.

Warming up
Adjust the throttle lever to a fairly fast and steady idling speed. Don’t over-rev on electric start Stuart Turner engines, or the Dynastart could be permanently damaged. Check the cooling water flow.

With an electric start engine, maximum power can be obtained for limited periods with the ignition switch in the ‘run’ position. Operate the switch quickly through the ‘off’ position to ‘charge’ the battery.

Stopping Stuart Turner engine
For short stops, the engine should be stopped electrically. If stopping for a longer period, cut off the fuel and let the Stuart Turner engine consume the contents of the float chamber. In this case, the Stuart Turner carburettor will need to be ‘tickled’ before restarting, but stop as soon as fuel is seen at the overflow.