The Marine Knowledge Network
Field write-ups from real jobs - what broke, what fixed it, torque specs and part numbers included. Ask it a question; specs answer inline.
12 articles for “diagnosis”
The On-Water Diagnosis Kit: What's Actually in the Bag
... spares (multiple brands — dead lanyard, dead diagnosis) - Prop wrench, blocks of wood, drive/gearcase ...
Evinrude/Johnson Two-Stroke No-Spark Diagnosis
... voltage (DVA) values for your model. ## Diagnosis order 1. **All cylinders or some?** - No ...
Outboard Fuel Pump Diagnosis: Lift Pumps, VSTs, and Primer Bulbs
... and debris there redirect the whole diagnosis - Testing at idle only; delivery problems show ...
Outboard Overheating: A Diagnosis Flow That Doesn't Guess
## Start with the complaint, not the parts bin "Overheat alarm" calls resolve fastest when ...
Sterndrive Gimbal Bearing and U-Joint Noise Diagnosis
## The sounds and what they mean Drivetrain noises through a sterndrive transom are diagnosable ...
Yamaha WaveRunner No-Start Diagnosis
## Sort the complaint first "Won't start" means three different jobs: **no crank**, **cranks ...
Reading Marine Spark Plugs: A Diagnosis in Your Hand
## Why plugs are worth reading every time Spark plugs are free diagnostic data. Any ...
Boat Trailer Lights and Wiring Troubleshooting
... wired trailer — previous owners get creative. ## Diagnosis order 1. **Prove the tow vehicle first ...
Pontoon Boat Inspection: Logs, Leaks, and Pre-Season Checks
... the deck structure. ## Water-in-log diagnosis 1. On the trailer, look at the ...
Outboard Compression Testing: How to Do It and Read the Results
## Why it's the first test on any used or sick engine A compression ...
Hydraulic vs Cable Steering: Diagnosis and Service
## Identify the system first - **Mechanical cable** (rotary or rack): a helm turns a push ...
Prop Hub Replacement and the Spun-Hub Field Call
... If the line breaks alignment, the hub slipped — diagnosis done. 3. Rule out the ...