Boating - Recent Questions, Troubleshooting & Support


It does seem like an ignition problem.
I don't have specs for your motor, but generally Resistance type HT (spark plug ) leads should show up to 10K ohms or less so infinity means a gap somewhere .
Primary side of the coil can be as low as 0.5 ohms and up to 100 ohms.
Make or buy a spark gap tester. Be careful not to hold the wires or tester. You would know that this is high voltage, but others reading this may not on first try.
Cranking the engine with spark plugs removed keep the tester away from the spark plug holes and any fuel. The spark should jump 5/16th" or more.
If it's only one spark that is weak then it's most likely the plug coil, but to be sure swap it with another to check to see if the weak spark goes with it, otherwise it's most likely a CDI unit. If all sparks are weak then it could be the CDI charge coil or the CDI unit. You would need to find the output specs for the charge coil to confirm which is the problem. Often they put out 150 to 200 volts AC at cranking speed
I hope that helps

Boating | Answered 2 days ago


Here's a link to Yamaha year ID. You need the letter that is below the number you have given to get the year.
https://docs.google.com/document/d/1air2AFd0Nuodb_GdpEkBLYfNYF9KGQmv26spIZmFzIs/edit?usp=sharing

Yamaha Boating | Answered 2 days ago


EVER CHECK THE SHEAR PIN IN PROP

Mercury Boating | Answered 2 days ago


the poser transfer switch is in the wrong possition or a terminal is off in the panel

Bayliner Boating | Answered on Jan 17, 2019


You don't say what kind of speed box you have, but you probably have a "cupped wheel" speed sensor. These need to spin freely with the motion of the water to send a speed signal to your "speed box", but they are easily fouled by corrosion, marine organisms, sea grass or any other sort of debris. Check the sensor for fouling and clean as necessary. Other than that, you may have an electrical problem which is difficult to isolate without test instruments.

Boating | Answered on Jan 16, 2019


You'll need something close to 12.6v at the plotter to get it to start. Check the battery voltage at the battery terminals. If you've flatted a lead acid battery, it will not be much good for anything after that, even with recharging. If you have 12+ volts at the battery, remove the power connector from the plotter and check the voltage between the hot and ground pins to make sure you are getting power to the plotter. If the battery has any voltage, but the plotter does not, check for continuity of the fuse and/or breaker. Proceed accordingly. You'll likely need a new battery in any case. Hope that helps.

Boating | Answered on Jan 16, 2019


Hello, Dianne -

Boats have been required to have Hull Identification Numbers (HIN) since 1 Nov 1972 in the USA.

Go to this web page to learn where the HIN should be found on your Grumman boat, if it was made on or after 1 Nov 1972:
http://www.hinsearchplus.com/hs_userguide.aspx

Once you find the HIN, the information on the web page should help you determine when your boat was made.

Best wishes.

Boating | Answered on Jan 16, 2019


The hot wire (positive) is red and the ground (negative) is black or, sometimes, brown. There is also a drain wire in the harness, that should be connected to the RF ground of the boat or, if none, to the negative terminal. You'll also need to add a 3A slow-blow fuse in the positive wire.
Follow the installation instructions as follows:
1. Connect the transducer / power connector to the rear of the unit and secure using the locking collar.
2. The drain wire should be connected to the vessel RF ground point. If your vessel has no groundpoint connect to the negative side of the vessel's power supply.
3. The Negative wire must be connected to the negative side of the 12 V dc power supply.
4. A fuse holder (not supplied) MUST be fitted to the positive wire using a suitably rated inline fuse or breaker.
5. The positive wire must be connected to the positive side of the 12 V dc power supply.

Raymarine... | Answered on Jan 16, 2019


The 40 signifies the same power output, pick the one that's best for your individual needs regardless of the title as both have the same amount of power!

Let me know if this is helpful by clicking "Helpful", feel free to leave very brief review or follow me, I deal with automotive/mechanical/technical and other subjects relevant to daily life. Thanks and have a great day!

Minn Kota... | Answered on Jan 15, 2019


Request the wiring diagram directly from Travis.

Boating | Answered on Jan 13, 2019


https://support.crosman.com/hc/en-us/article_attachments/202459274/BPNP17X.pdf

https://support.crosman.com/hc/en-us/article_attachments/202459244/E-BBB515.pdf

Dmm Benjamin Air... | Answered on Jan 12, 2019

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