yanmar

Hello, I would like to change my saildrive propeller due to some damages on the old one. I came across the flexofold propeller and was wondering if I should be this one or not. Does anyone have some experience with this company? And does anybody know the gear ratio of the Yanmar 4JH4TE SD...

I bought my 1990 Hunter 28 ten years ago last month, and during that time I never had hot water that came from the heat of the engine because the valve next to the heater had meet turned off. I opened it and of course it started leaking so I replaced it and I now have hot water. That was two...

Hello everyone. First post here, by recommendation from a bud at the club I'm in. My boat has a Yanmar YSM12R engine. The other day after a surprising blow along the river, the neck connecting the mixing elbow to the engine snapped - images included: The boat used to be an ocean boat so it...

I recently purchased a 1995 Beneteau Oceanis 321. It has a Yanmar 3GM30F Engine with approx 2500 hours. I noticed that when the engine is running at idle, that there is a metallic rattling or "jingling" sound (like a small bell being bounced around) coming from the transmission, bellhousing...

Reaching out to anyone who has been able to fix problem of minor soot developing on hull after 50-60 hrs of cruising Hunter 44DS 2004 Yanmar 4JH3E 2400 hrs (1500 hrs added during last 27 months) no visible smoke engine runs very well and starts immediately WOT rpm 3800 Cruise rpm 2800 (75% of...

Hi all, In my recently bought Hunter 33, while checking the engine I saw that the mixing elbow got rust on it, to my that is strange as the elbow was replaced in 2020 and the engine was serviced by OEM Yanmar service partner in February this year, I really wonder that the engine would have...

Hey, I have a Yanmar 3gm in my Hughes 36. At idle, I can rev the engine right up to 3000rpm with no abnormal vibration. The same can be said for when the boat is in reverse. However, when I shift into forward I can only get up to around 1100rpm before I notice significant vibration and engine...

I have heard that I should lubricate the impeller on my Yanmar 2GM (Hunter 326) when I replace it. I have also heard to not use a petroleum based lubricant. So, what should I use and where can I get it?

I’m considering purchasing a beautifully restored Islander 36, steeply discounted on account of a crack in the engine block (Yanmar 3gm30f). The quote for a local yard to repower is around $20,000 but there’s a used Yanmar 2gm20f for sale (running great) that’s affordable and seems to fit...

I have heard that I should flush out my Yanmar 1gm10 inboard diesel engine every time I run it in saltwater. Is that true? Is there an easier way to flush it, because it currently takes me about 20 minutes after each time I motor which is a pain?

Just had my yanmar serviced (oil, filters, impeller, etc.). 300 hours and running well. After first trip out since service, I decided to recheck oil (cold and warm) and just make sure everything was in order. All is good. Except, I noticed a black zip tie that snapped...looked like it was...

On my last two 8-10 hour passages when I started heading in to the dock I noticed the engine RPMs took 10 or more seconds to respond to lever commands. Even more so for reverse than forward. Made for a dicey docking evolution. While running, the engine goes into reverse or forward immediately, I...

In attempting to remove some excess oil from our Yanmar 3YM30 through the dip stick hole, I was unable to get very much out. I tried several times and chalked it up to the cold engine and/or ineffective pump. However, when reading the manual for the 3YM30, it specifically states that the oil...

My boat has been sitting for about 2 months. I went to run the Yanmar 3GM30 tonight and this is what happened. Starts fine, idles and runs great when not in gear up to 3,000 rpm. In gear, piles of black smoke and won't run more than 2,000 with almost no forward propulsion. Fuel looks good. New...

Hi, Does anyone know the part number for the raw water cooling hose. The parts catalog says 128291-49020 but no drawings to confirm. Couldn’t find any pictures on vendors web site neither. Thanks.

I have a 96 Hunter 376 with a Yanmar 3JH2E that has no gauges, just idiot lights for oil pressure and water temp. And because we only use the motor occasionally (in and out of dock) it would be prudent to know the thing is running within spec. So I found and interface that will work with my...

I have a 1997 Yanmar 3JH2-T(B)E turbo motor in my Freedom 40/40 and when I start it up, the oil pressure is low, but when I start motoring, it climbs to normal levels. Then after about 20-30 minutes, the pressure starts dropping to levels lower than I would like to see it. Quite often I can...

Has any H326 owners fitted a Yanmar 3YM30 on their boats? I'm keen to know if this 3YM30 engine will fit in to the existing compartment without need for modifying or alternating the steps Engine Cover or any woods of compartment. Thank you. Ken Y

What newer Yanmar swaps out 3GM30.. Looking for good deal on running take out that will easily drop in. Fla. 386 316 0725 ocean32114@yahoo.com

Hello, I have a 2001 Hunter 460 with the flex-o-fold prop, previously my WOT was around 3600rpms. This put my cruising RPM's at around 2800. Over the last year i've noticed I can no longer get up to 3600rpm's. I top out around 2900. Thinking this could be because of a running gear or bottom...