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  1. S

    Rough Idle 2010 Honda 150 HP O/B

    I have a 2010 Honda 150HP Four Stroke and this past season the engine would start right up and idle smoothly at approx. 800 RPM. After about a minute of running smoothly engine begins to shudder and shake as if starving for gas, but does not stall out. When I raise the RPM to about 1000 engine...
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    VST Filter

    On my Honda 150hp O/B there is a hose on the top of the VST tank with an inline filter. This filter has an arrow on it . Which way is the arrow supposed to point, toward the VST or away from it. Thanks........
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    Water Pressure for Honda 150 HP

    Can anyone tell me what the normal operating Water Pressure should be for a Honda O/B 150 HP.? Thanks, Ron
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    O/B Water Pressure Gauge 150 HP

    I would like to install an engine Water Pressure Gauge at the console of my boat. Where is the connection made on the engine ? ( Honda 150 HP O/B ). Who can advise......
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    Engine Thermostats on Honda 150 HP OB

    IS IT POSSIBLE ? For a defective thermostat to affect the computer and cause the engine RPM to fluctuate (or vary) approx. 300 RPM at 2000 RPM engine speed. If not, any other possible causes for this to occur.v
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    Installing Vertical Shaft Bushing on Honda 150HP Outboard

    When installing a new Vertical Shaft Bushing on Honda 150HP which end is up toward powerhead, the notched or flat ?. Had to have vertical shaft replaced and old bushing was so mangled could not tell which end was up ..... Any help ?????
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    Installing Lower Unit on Honda 150HP

    Have 150 HP Honda engine with a top mount Honda control. This control has a detent that maintains approx. 3 mph forward speed prior to neutral position. When installing the lower unit is there anything to pay particular attention to.
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    No Primer Bulb on Honda 150 HP

    Is a Primer Bulb necessary on a 2010 Honda 150 V Tech engine ?. Presently, there is not one on my engine but appears there might have been one because line is spliced with nipple and clamps on the line leaving the remote water separator.
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    Draining VST on 2010 Honda 150HP

    While reviewing this forum for info on Vertical Shaft bushing replacement ( discovered mine is totally destroyed, but that's another story) I noticed a lot of discussion about draining the VST. I live in New York and presently it is 10 degrees outside. How do I go about draining to prevent...
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