Instruction manual

PROFICIENCY IN SURVIVAL CRAFT AND RESCUE BOATS OTHER THAN
FAST RESCUE BOATS
9 5
may even be fitted with a no-oil alarm to warn the operator when the engine is
receiving no oil. If the reservoir of the VRO pump runs dry during engine
operation, the operator should stop the engine and refill it.
1. Lube oil tank 2. Oil injection pump 3. Carburetors 4. Fuel filter 5. Fuel pump
Fig. 9.6 Yamaha precision blend lubrication system (VRO)
9.6 Mounting an outboard motor
There are two methods of securing an outboard motor to the stern of a
vessel.
One involves the use of hand-tightened screw thread clamps. These clamp
the transom of the vessel between the engine mounting bracket and the screw
thread plates. Their tightness should be checked each time the engine is used. A
safety rope or chain should also be used to secure the motor to the vessel and
prevent the motor from dropping from the stern if the clamps get loose during
vessel operation. On larger outboard motors, the mounting bracket is usually
bolted through the transom plate.
This is a more secure method, but regular checks must be made for
looseness.