![]() ![]() If you have a standard impeller cover, you’ll need a replacement gasket – but I have a Speedseal which only required re-greasing with silicone grease. Yanmar 1GM Sea Water Pump 128170-42200 539.00 AUD Add to Cart Yanmar 1GM, 1GM10 (Jabsco 1414-0001) Replacement Impeller AN 2044 42.35 AUD Add to Cart Yanmar 1GM/1GM10 V-Belt 128170-77350 (Replacement) 19.80 AUD Add to Cart Yanmar GM Alternator (35A) 128270-77200 Replacement PH300-0005 330. Luckily, the seals themselves aren’t too expensive (£14.26 for the pair). Yanmar 1GM10 1GM Sea Water Pump Diesel Engine Cooling Replaces OEM 128170-42200. This time, the shaft’s scoring was too advanced to ignore, so it needed replacing – and at £96.71 for a short length of stainless shaft, that hurt the wallet. I first rebuilt it seven years ago, replacing the bearings and shaft as well as the seals, and rebuilt it once since (three years ago), only replacing the seals as the shaft wasn’t too bad. When I noticed my water pump was dripping last winter, I serviced it to stop the problem happening again. When the seals give way, as they tend to do with alarming regularity, you get salt water dripping onto the oil pipes – which, if unchecked, can cause them to corrode through quite quickly. ![]() The worst is that the raw water pump is sited over the top of a ferrous oil pipe. The Yanmar 1GM10 is a great little engine, which starts first time and runs reliably: but there are one or two design flaws. Additionally, as an Amazon Associate, if you follow one of our links to and make a qualifying purchase, SaltWaterDiesels will earn a small.
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