I can only do things which require no physical strain because of my recent surgery. So, today I cleaned up my workshop at home. On the right, (white cylinder) is the hydraulic pump for the yacht's steering. It needs a new seal. I will do that as soon as I am over the operation.
こんばんわ　しょ。。。。！おげんきですか。わたしわ　いい　にほんごですかか。わたしのにほｎ　かえります、としょ。。とデービッドに、にほんごをはなします。１か２か３かアサヒスパーヅライのみます。

My good friend Sho... is the best marine engineer in Japan. His wife is a great cook, as it seems are all Japanese women. And, he owns the world's happiest spaniel! He is going to advise me on the problem a friend in New Zealand is having with his yacht's diesel engine.

Engine: Yanmar 3JH3. 730 hours. Installed 1999. It has no Zn anode, but does have an alloy heat exchanger. Is a zinc anode necessary? How often should the heat exchanger be opened for service? The end cap on the exchanger is cracked and corroded. He says the 'O' ring seal was not correctly fitted in the factory.

He claims Yanmar NZ will not assist him and say the unit should have been serviced sometime in the last 7 years. Have you any experience with a similar problem in Japan? Is Yanmar after sales service usually good?
わかりましたか。

Please say hello to S, Ke-ninja and your two lovely daughters for me. Do not worry so much about this problem. I appreciate your help.