PWC Aftercare & Maintenance:
KNOWLEDGE OF:
- Aftercare & basic maintenance
Session:
Carry out aftercare & maintenance including: fresh water flushing, lubrication, maintenance checks, cleaning
Flushing Procedure:
- Locate hose connection point
- Attach hose to fresh water tap (leave water off)
- Connect hose to flushing point on PWC
- Start PWC engine
- Turn water on (tap)
- Run engine for a few minutes to clear salt water
- Turn water off (tap)
- Turn engine off after a minute or 2
Key Points when flushing the engine:
Start engine BEFORE introducing water
Turn engine off BEFORE turning engine off
Why do we start the engine on a PWC before introducing fresh water when flushing?
Historically because if you force water into the engine without it running, water can get into the carb and cylinders causing something called hydro-lock.
Slightly different with the new closed loop cooling systems but its still possible to flood parts of the engine and from a corrosion point of view flushing through the exhaust etc has enormous value. Engine running = water traveling in the direction it was designed to travel through the PWC.
Hydro-lock = Once a cylinder fills with water, the compression stroke jams or 'locks' the engine (because water doesn't compress unlike air) and the engine cannot move.