Yamaha Outboard Technical and Maintenance Information for You!
Before you torque the bolts you typically have had to remove them first. Cylinder head bolts can be difficult to remove, and it seems they get even tighter with use. Plus, the bolts are recessed in a pocket, making it difficult to keep the T55 Torx® driver aligned with the bolt while applying the pressure […]
The power trim and tilt unit (also called the PTT and PT&T) is an important mechanism that allows the motor to angle up or down. The correct trim angle helps the boat achieve the proper attitude (i.e., the relationship between the bow and the stern) and is responsible for the smoothness of the ride. It […]
The Service manual provides the correct procedure for testing the Power Trim & Tilt (PTT) relay, but the procedure can be a little vague. In this article we will provide more detail about operation and testing. Relays are an electromechanical device commonly used to allow a circuit with a small amount of current flow to […]
Tilt Limiters are available for a variety of models and are designed to help prevent cowling damage when the splash well or other boat components have encroached into the motor area. While the switches are simple devices themselves there are a few points about the system that you should be aware of. • On most […]
Let’s look at some common complaints for the Precision Blend System or PBS. “… the oil pump does not run … system will not transfer oil to the engine oil tank ….” There are a couple of checks /possibilities here: • The first check should be a visual one. Look for corroded or damaged wires […]
Although winter may not be on the minds of customers in late summer, it is the time for Marine service professionals to prepare for winterizing. Many of you will be busy winterizing your customers’ stern drive and inboard powered boats to prevent freezing of water that doesn’t self drain from the blocks and exhaust manifolds. […]
The battery is a key component of a modern outboard motor. It provides energy required during starting and provides supplemental energy when the boat’s demand exceeds the capacity of the charging system. Modern fuel injected motors can be more sensitive to low voltage conditions than previous carbureted models. Because of the battery’s importance, battery cables […]
Today’s boater demands convenience, and insists on accurate and instant information about boat and outboard systems. With the plethora of modern electronics, the call is for more information and more available dash space than ever before. Yamaha answers the call with the 6YC “Information Station” display. The 6YC Information Station display gives boat owners detailed […]
Service manuals are often viewed as a source of information to disassemble and assemble outboards … which they are. But a closer look at the contents of a service manual can prove surprising. In this series of articles, we will look at some of the lesser-known sections that provide safety information, system technical data, product […]
Although winter may not be on your minds in late summer, it is the time to start thinking about it. Many of you will be busy winterizing your stern drive and inboard powered boats to prevent freezing of water that doesn’t self drain from the blocks and exhaust manifolds. Although outboard motors are self-draining, there […]