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  1. R

    How heavy is the lower unit on my 86 ProV150

    Have not rebuilt the water pump on this specific engine, but have done a lot of my own mechanicals like rebuild carbs and rest of fuel system, oil pumps, shift cables, etc, so I think I can do this except I'm in my early 70's and not as strong as I used to be. So my question is whether anyone...
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    '86 ProV150- Need tips on starting

    I always add stabilizer when I fill the tank and always put the boat away with a full tank - like I dis last October. Didn't winterize the boat because the climate here in NC is typically mild during the winter and I often go fishing during the winter months. But things change and for reasons...
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    Winterize or not? Compression ring on NGK's reusable/

    I recently moved to Western North Carolina after 30+ years in New England where I have always winterized my 86 Yamaha 150. However, here in WNC we get some pretty decent fishing days throughout the winter, so I am tempted not to go through the winterization process down here. Should I be OK if...
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    86 150 stalls at idle

    First time out after rebuilding carbs and tuning to specs. Started fine, accelerates great and runs smooth when on plane. But at idle, the engine "coughs and sputters" then dies Have idle turned up as fast as possible and still shift (approx. 1200 RPM), but it still "hiccups" and stalls...
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    "86 Yanaha 150- I'm in trouble - lost pilot jet - no longer availabler part

    Was in the final stages of clean and rebuild last of 3 carbs. Drying pilot jet with compressed air when I lost grip on pliers and this little (4mm) brass jet was gone. Have torn my workshop aparat to no avail. (magnetic sweep doesn't work) Have searched internet extensively. Jet is...
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    86 Yamaha 150 - issue disassembling carbs for clean/rebuild

    I am unable to remove brass bypass screws on top of carb. Concerned too much torque w/screwdriver will damage groove in soft brass. All tips and suggestions appreciated.
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    Yamaha 86 150 - issue disassembling carbs for clean/rebuild

    I am unable to remove brass bypass screws on top of carb. Concerned too much torque w/screwdriver will damage groove in soft brass. All tips and suggestions appreciated.
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    Looking for source of gauge to measure fuel pump pressure.

    Trying to track down problem that could be related to fuel pumps. One seems to be putting out less than the other. I'm looking for a gauge that will measure the low values produced by a fuel pump. All suggestions welcome.
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    '86 Yamaha 150 - Is there anything left but to clean/rebuild carbs?

    The problem: Stalls when attempt to engage gear. Once underway, WOT 1200/1500 rpm. Fast I dle fluctuates back to 400. Attempted fix: Compression check OK. 108 - 110 all cylinders. Drained carb bowls & filled with Sea Foam through fuel lines. Soaked overnight. 1gal of ring free shock...
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    86 Yamaha 150 timing question for Johnson/Evinrude experts

    rickclark Cadet Join Date: May 2010 Posts: 17 I am finishing the final steps of tune up with a static timing check until I can find my timing light or get another. Retard and pick up timing need no adjustment. However, when attempting to adjust full advance timing, I am a long way from...
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    86 150 ETLJ: No enough screw to adjust advance timing

    Finishing final steps of tune up with static timing check until I can find my timing light or get another. Retard and pick up timing need no adjustment. However, when attempting to adjust full advance timing, I am a long way from being able to align the mark on the flywheel to the mark on the...
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    1984 Yanaha 150 stalls at idle - WOT 1200 RPM max

    After being under way for 30 minutes of so my 86 150 ETLJ dropped to 1500 RPM, had no guts. Stalls when idling down to shift. Difficult to restart. Topped off with fresh fuel and emptied a can of Sea Foam through the carbs while hooked to hose and "muffs". Seemed to be slight improvement in...
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    86 150 stalls at slow idle - Max RPM at WOT 1500

    After being under way for 30 minutes of so my 86 150 ETLJ dropped to 1500 RPM, had no guts. Stalls when idling down to shift. Difficult to restart. Topped off with fresh fuel and emptied a can of Sea Foam through the carbs while hooked to hose and "muffs". Seemed to be slight improvement in...
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    Help with trailer refurbish (How cut diamond plate aluminum?)

    I'm in the process of refurbishing my boat trailer and want to replace he carpeted step pads with diamond plate aluminum. I am looking for suggestions on what to use to cut the diamond plate stock in order to get an accurate and straight cut. All suggestions appreciated.
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    Minor problem - Major headche

    In preparing the lower unit of my '86 150 Yamaha, I removed one of the two metal cover plates on each side of the lower unit. (see pics) Now, after many,many attempts, I am unable to put it back on. It looks simple, but the rwo springs uinder the cover make it a real challenge. Wondering if...
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    How long can I use the oil in my reserve tqank?

    Haven't had a chance to use my boat much this year. Pennzoil Synthetic Blend in on baord reserve tank for 2-stroke 150 is approaching 2 years. Is there "shelf life" on the oil. Danger in using older oil? Should I pump out a refresh with fresh? How about pump out 1/2 and replace with fresh...
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    Trim Gauge or sender?

    Trim gauge for my '86 Yamaha 150 is not working. How can I test to see if it is the trim gauge or sender that is the problem?
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    Trim gauge or sender?

    Trim gauge on my Yamaha 150 is not working. How do I tell whether it's the sender or gauge that is bad?
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    No Power under load

    Had my boat with '86 Yamaha 150 out for the first time in over 90 days this past Holiday weekend. Started fine (always keep filed with treated gas).Warmed up for a while then revved the engine to 2500 RPM or so using the fast idle lever. Revved fine, ran smooth all through the RPM range...
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    Sour fuel in Yamaha 150

    For the first time in 20 years of ownership my 150 Yamaha O/B won't start at the beginning of the season. Thinking back, I forgot to add stabilizer to the fuel and run it up into the carbs before storage as I ususally do. Drained the tank and filled with fresh fuel, but it still won't start...
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