I am in coastal Vietnam. Where I am staying the seawall is not effective against rough surf. In fact the surfaced beach road every high tide gets unindated with water to about 10 cm deep. I have to go through it. I thought it would give my Flamingo 7NX a good wash but now the chain and perhaps the gears sound gritty. Sand perhaps. I thought the internal gears would be hermetically sealed. Now I have my doubts.

Is paying one of the local pressure washer motorcycle washers a good idea?