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 “four-stroke outboard”
Yamaha F-Series Four-Stroke Winterization
## Scope Applies broadly to Yamaha F-series four-strokes (F25 through F350). Always confirm ...
Two-Stroke vs Four-Stroke Oil: What Goes Where and Why It Matters
... use car oil in my four-stroke outboard just this once?" — In an emergency ...
Outboard Compression Testing: How to Do It and Read the Results
... Two adjacent low cylinders on a four-stroke: possible head gasket. - Zero on one ...
Suzuki DF Lower Unit Oil Change and Water Intrusion Signs
... change on a Suzuki DF-series four-stroke is a fifteen-minute job, but ...
Honda BF-Series Carburetor Cleaning
## When to suspect the carbs Honda BF-series four-strokes (especially BF8–BF90 carbureted ...
Spring Recommissioning Checklist: Outboard Boats
... Budget 1.5–2.5 hours for a single outboard; use this as your ...
Outboard Fuel Pump Diagnosis: Lift Pumps, VSTs, and Primer Bulbs
... the VST and high-pressure pump On EFI outboards, the lift pump feeds a ...
Sea-Doo Winterization Step by Step
... 5. **Oil change** on four-stroke models — store on fresh oil, never used. Check ...