While tying up our CS27 after a nice sunset sail with the family, the bilge pump started pumping out water. I've had leaks from the water tank before but this time I knew it was empty. I quickly went down below and checked the head and the throughhulls but there was no sign of any leakage. It was then I remembered hearing an unusual sound coming from the engine, which started right before docking. After inspecting the engine I noticed that a pipe had cracked and was spraying water when the engine was on.
Not being an engine specialist by any means, I studied the engine looking for the cause. I followed the water intake pipe through the strainer and into the engine, then followed the exhaust into a 'U' shaped piece called a mixing elbow. This is where exhaust fumes and sea water get mixed before being release. The connection between them was cracked.
I disconnected the exhaust elbow (the piece coming out of the engine) and the mixing elbow (the piece it connects to) and brought them home. I tried to salvage the non-cracked pieces by trying to clean the 30 year old gunk off of them to no avail.
I called mechanics and went to marine service shops but nobody had the parts. I was going to order it through them and pay the hefty price but they were very slow to get back to me. They only care about the half million dollar yachts they service, not my few hundred dollar purchase.
After doing some research, I learned the part numbers of the pieces I needed.
104214-13521 mixing elbow
104211-13070 exhaust elbow
104214-13580 adapter joint.
This document really came in handy. Click here.
I found a great online store that carried all the parts, and ordered them. If you are in need of some boating equipment and parts, check out shop.torresen.com
Tags: Yanmar, sailing, sailboat, parts, YSM8, YSE8, engine, motor