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  1. M

    2017 Mercury 150 tilt/trim problem (location of relays)

    Damn..... the problem went away. Intermittent problems are tough to diagnose. The temp got above 40 this afternoon so I went down to the boat to further diagnose the problem. When I noticed the problem a few days ago the only way I could get the trim motor to stop was to disconnect the...
  2. M

    2017 Mercury 150 tilt/trim problem (location of relays)

    OBhoy, thanks again, much appreciated. The tip on using the blue/green wires to identify the relays in question will help. Its a cold morning here in TN, so I may need to wait a day or two for it to warm up a bit. The first thing I'll try is disconnecting the cowl-mounted switch as...
  3. M

    2017 Mercury 150 tilt/trim problem (location of relays)

    Thanks for the info, I'll disconnect the t/t switch in the cowling, that is a great suggestion and I will do that, much appreciated! What I was asking for is what do the 4 relays control? According to the attached diagram, there appears to be 4 relays. I was asking is what each of the 4...
  4. M

    2017 Mercury 150 tilt/trim problem (location of relays)

    I've searched the forums and don't see anything that suggests location of the tilt/trim relays for my 2017 Mercury 150. The Mercury parts diagram for my model shows the location of 4 relays that I assume are under the cover of the electrical box on the port side. See diagram below. Of the 4...
  5. M

    2017 Mercury 150 need valve adjustment procedure

    Qbhoy and Scott D, Thanks for your suggestions. Since my Merc is running perfectly and the only symptom is a bit of noise at idle, I'll postpone the possibility of adjusting the lifters at least till fall maintenance time. Again, thanks for your inputs, much appreciated. Scott D, I did in...
  6. M

    2017 Mercury 150 need valve adjustment procedure

    Scott D, Thanks for your response. But are you sure you've responded to the right post? To me, the sound I'm hearing sure seems like the mechanical sound of tappets needing adjustment. Are you suggesting that its unlikely that the valves would ever need adjusting? Some of your suggestions...
  7. M

    2017 Mercury 150 need valve adjustment procedure

    I found a procedure in a borrowed service manual. I'll attempt to scan the procedure and post for any others who may have similar question. Mr Tim
  8. M

    2017 Mercury 150 need valve adjustment procedure

    Hi all, 2017 Mercury 150 with about 450 hours I've searched the threads and haven't really seen what I'm looking for.. Recently, my 150 has started to sound a bit like a sewing machine while at idle so likely needs to have the valves adjusted. I searched the forum and u-tube and only found...
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