What causes an outboard motor to not a start?

Dirty or damaged spark plugs make it difficult for your engine to crank. Inspect your spark plugs and replace any spark plugs that are broken or dirty. If the spark plugs in your marine engine are improperly gapped, this can also prevent your boat from starting by delaying engine combustion.

How do you troubleshoot a Yamaha outboard?

Engine

  1. Check the fuel system first if the engine has problems starting or running.
  2. Check the fuel lines connecting the outboard motor to the fuel tank.
  3. Check the engine oil levels next.
  4. Remove and inspect the spark plugs.
  5. Remove the spark plug cap and twist each plug away from the cylinder using a spark plug wrench.

How do I get my boat motor to run after sitting?

Get some water to the engine via a garden hose. Then put on some ear muffs and let the water run for a couple of seconds. Prime up the fuel, turn the key, and hopefully, start and run the engine! If you are going to let the engine sit and run for a while, (which is a pretty good idea to do).

What is Yamaha Command Link?

Yamaha Command Link is a rigging system that includes wiring harnesses, network hub(s) and components. This system creates a computer network on a boat, and all the Yamaha components use the network to communicate between devices.

Why does my boat turn over but not start?

If the engine cranks slowly or doesn’t crank at all, it’s possible your battery may be dead or low. Use a voltmeter to check the condition of your battery. If the voltmeter reads below 12 volts, your battery most likely is the problem and may need to be jumped or replaced.

How do you test a starter solenoid on a Yamaha outboard?

Place the voltmeter positive lead to the smaller wire terminal on the solenoid (usually purple or yellow), and the voltmeter negative lead to a ground source. Have your assistant turn the key to start the engine. The voltmeter should read 12.6 volts or more. Listen for the solenoid to click and the starter to spin.

How do you start an outboard motor that has been sitting?

Why won’t my Yamaha outboard start?

To start and run, a Yamaha outboard needs a properly timed ignition and correct air/fuel ratio. Also, be sure to check if the emergency shutoff switch cap is in place. If it still won’t crank, check the neutral switch. If you hear a clicking sound when the starter motor attempts to engage the flywheel, inspect the starter solenoid.

How does a Yamaha outboard motor start?

The starting system on your Yamaha outboard includes the starter motor, battery, fuel pressure sensor, throttle position sensor, ignition system, starter relay, wiring harness, switches and more. These parts work together to convert electrical energy from battery into mechanical energy to rotate the crankshaft and start the Yamaha outboard engine.

What should I do if my outboard motor is not working?

Check all the fuses and replace any that are burnt out. The fuse box is usually located under the helm console, but don’t forget to check the engine’s main fuse under the outboard’s cowling. Make sure the spark plug cables are firmly connected, and inspect the leads for any splits or tears in their outer jackets.

Why won’t my boat motor stay in gear?

Double-check that the motor hasn’t been left in gear by moving the shifter in and out of gear a couple of times. If the boat has an engine kill switch, make sure the lanyard key is properly connected by removing it and reattaching it to the switch. If these simple remedies don’t solve the problem, the next step is to look at the battery.