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    Trim Sender question

    1990 135 Black Max S/N# OC138477<br /><br />Have a fairly simple question, or so I think. What is the resistance values I should read at the back of the trim gauge? I ask as I just installed a new sender. When tested by itself I get readings from about 40ohms up to about 90ohms. When I...
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    '89 135 Black Max -- General maintenance question

    I have noticed on my motor that I have 6 orifices located on the cylinder block next to each cylinder. These orifices are connected via rubber vaccuum lines. What are these orifices and how does one clean them? It appears that they are some type of check valve.
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    '89 135 Black Max--Mercury Switch question

    I noticed this week that the motor starts when tilted all the way up. I know this is not supposed to happen and was informed of a device called a "Mercury Tilt Switch". Is this is the first sign of this device going bad? Anyway one can bypass this device without affecting other items in the...
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    '89 135 Black Max--stalling

    This is a new topic from my previous topic which problems have now been corrected. Seems that there might be another issue needing attention. As a recap, originally the motor would stall out. Checked spark and noticed that I had no spark on #2 and weak spark on #3. Switch boxes were the...
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    '89 135 Black Max--Poor spark on Cylinder 2 and 3

    In an effort to fix the random stalling I went out and bought a spark tester. All but cylinders 2 and 3 had good spark with at least a 3/8" gap. test was done while cranking the engine. I assume that 2 and 3 are bad so I ohmed out the coils and all appears to be OK. What else would cause...
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    1989 Merc Black Max--randomly stalls

    Over the past several weeks I have been trying to find the cause of the random stalling of my 1989 Black Max 135. During this time I have replaced my fuel pump(which was badly needed), and checked for exhaust leaks. Prior to this I had changed the fuel filter and spark plugs. Anyway, over the...
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    1989--Black Max 135--stalls when cowl installed

    I have received good feedback from the group and wanted to post another problem. I have a 135hp 1989 Black Max. I rebuilt the fuel pump which I thought was the cause of the random stalling. After doing so the problem reoccured. After a bit of playing around with it I discovered that removing...
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    1989 Black Max 135--randomly stalls

    Got a rather weird scenario that sounds similiar to others. However, mine is a bit unique which I feel must be posted. I have an 89 Black Max 135. Most of the time it runs fine. However, out of the blue, when idleing, it sounds as if it starts loosing spark(what it feels like) and running...
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