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  1. J

    Carb Adjustment

    1992 Mariner 150hp V6 SER#OD124111 My outboard has the WMH carbs with two adjusting screws on top of the carb body. My question is if I turn the screws clockwise toward the shut position does this make the engine run leaner or richer? Don't wont to burn it up due to being to lean. Thanks for...
  2. J

    Bad Idle

    1992 Mariner 150 Ser#OD124111 Motor wont idle good at all. Have rebuilt carbs, replaced fuel lines. replaced water seperator and inline fuel filter. Runs fine at all speeds except idle, it cuts off while trying to load onto trailer. Is the idle speed screw the big screw toward the throttle...
  3. J

    Carb question

    1992 Mariner 150hp Ser#OD124111 I cleaned out the carbs last weekend and noticed on top of the carbs there are two silver plugs that appear to be pressed in. Do these have to be puilled out to expose another jet or orifice? The carbs are WMH-1 it looks like. Thanks for all the help.
  4. J

    Loss of power

    Motor is a 1992 Mariner 150hp V-6 Ser# OD124111 Problem: was running fine then all of a suden wouldnt take the gas and had to paddle back to the ramp. Had been running fine all day, turned it off to retrieve a skier , went to crank it up and had about two cylinders running. I have installed new...
  5. J

    overheat alarm

    --------------------------------------------------------------------------------<br />Mariner 150hp Ser#0D124111<br /><br />In process of removing the oil injection due to stripped gear on the crankshaft. Disconnected the purple wire from the lubalert to the terminal block to stop the oil alarm...
  6. J

    overheat alarm

    Mariner 150hp Ser#0D124111<br /><br />In process of removing the oil injection due to stripped gear on the crankshaft. Disconnected the purple wire from the lubalert to the terminal block to stop the oil alarm from beeping. Upon doing this it also took out the overheat alarm. How do I wire this...
  7. J

    Driveshaft

    1992 Mariner 150 Ser# 0D124111<br />Removed lower unit to inspect water pump I installed about 6 months ago, all was well. Went to reinstall the lower unit and had a awful time getting the driveshaft spline to line up with the powerhead. With a flashlight looking from the bottom of the motor I...
  8. J

    cowling drainage

    1992 Mariner 150hp ser#Od124111<br /><br />I sometimes have standing water in my cowling after some rough seas. I believe there are two drain holes in the rear of the cowling that act like check valves. I cant get the water to drain out of them or even push a tiny wire through there. Is there a...
  9. J

    alarm

    1992 Mariner 150hp ser# 0D124111<br />At idle I have the beep-beep-beep alarm going off.<br />When I put in gear and run about 1500rpm it goes away. Have tried disconnecting the wires at the oil reservoir cap and it made no change. Oil level in reservoir tank is full to the top. Repalced water...
  10. J

    which water pump

    1992 Mariner V6 150hp<br />Ser# 0D124111<br /><br />Replaced water pump with all new components: impeller,housing the whole thing.<br />Did this with the help of a experienced mechanic. Purchased parts from a local Mercury dealer after giving him the above information. All went well and it works...
  11. J

    voltage spike

    1992 Mariner 150hp V6 SN#OD124111<br /><br />Read a post somewhere about how to test a voltage regulator by disconnecting the wires putting a voltmeter on the wires and doing a test. Been to the search page but cant locate it. Anyone know the post or the procedure?
  12. J

    tell tale hole

    1992 MAriner 150hp V6<br /><br />When flushing the motor on muffs it takes about 3 to 4 minutes to get water out of the tell tale hole. When running in the river at full throttle and all other ranges it pumps all right. Is this normal? Water has steam vapor coming off of it when it exits the...
  13. J

    voltage

    1992 Mariner 150hp V6 Ser#: OD124111<br /><br />Cruising along at 5000rpm the voltage gage will jump from 14 volts to 17 volts. It stays there a while then drops to 14 volts. Any ideas what would cause this? Just got this motor and it runs well except for this.
  14. J

    identify the year of johnson

    I have been given a older Johnson outboard in good running condition. Model# appears to be MJ75TRLCiM and the serial# is S J5486420. Any help is appreciated.
  15. J

    1977 Johnson 115hp

    Ihave a chance to purchase a 1977 Johnson 115hp. I can get the boat motor and trailer for $500.00. The motor runs good and the owner uses it a lot. However; there is ma cylinder with 60 psi compression and the others have 130 psi. It has been diagnosed with a ring problem. I have overhauled two...
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