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.
8 articles for “two-stroke”
Two-Stroke vs Four-Stroke Oil: What Goes Where and Why It Matters
## Two different jobs **Two-stroke oil** is consumed — mixed with fuel (premix) or injected ...
Outboard Compression Testing: How to Do It and Read the Results
... On repair calls, a scored two-stroke cylinder means quoting a powerhead job or ...
Evinrude/Johnson Two-Stroke No-Spark Diagnosis
## The classic call An older Evinrude or Johnson two-stroke cranks strong but never ...
Reading Marine Spark Plugs: A Diagnosis in Your Hand
... Think air leaks (carb base gaskets, crank seals on two-strokes), water in the ...
Outboard Fuel Pump Diagnosis: Lift Pumps, VSTs, and Primer Bulbs
... fuel starvation at high rpm, and on two-strokes sometimes fuel dripping from the ...
The On-Water Diagnosis Kit: What's Actually in the Bag
... reading adapter (ignition work on older two-strokes) - Adjustable spark gap tester (a plug ...
Yamaha WaveRunner No-Start Diagnosis
... of hard use or a lean two-stroke history shows up here. ## Fires and ...
Quoting a Repower: The Mobile Mechanic's Guide
... A modern four-stroke can be substantially heavier than the old two-stroke it ...