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  1. K

    Sea Weed on my Air Injector! '01 Optimax 135

    Hi Forum. I've read alot of posts for overheating of Optimax but cant seem to find a resolution to the issue. A constant alarm goes off then followed by 4 beeps. My service manual says, Low oil or Water in Fuel. Definitely not low oil(in reservior). I checked the airinjectors for Ohm and general...
  2. K

    Hot Fuel Rails. What next?

    2001 Optimax 135. 0T363758. Idles rough. Runs great. Fuel rail and cylinder head temps seem high. I just mounted motor and no gauges are in use right now, but the ones I have would help anyway. Rails and heads are hot to the touch. 3-5 seconds touch and I need to pull fingers of. The Portside...
  3. K

    Crazy MDC 1600 wiring mess.

    Hi All, Darn. I just spent 30 minutes putting together a post and I got a site glitch. So on this one I'll try to cut to the chase a bit quicker. Okay. I just mounted a 2001 135 Opti, Binnacle controls. The medallion mdc 1600 has 4 gauges, Tach, Speed (pitot), volt, and trim sensor. The two...
  4. K

    IF you were Rebuilding?- Optimax

    Picked up a 2001 135Optimax. Stupid me didn't have the hours checked and it has 985 hours of which 80-90% of the hours are at very low RPM's of 2000-2500/per the ECM. No hard fault codes could be pulled off the ECM unfortunately. Compression and spark are solid which is why I "rolled the dice"...
  5. K

    Convert Binnacle to a Side Mount Control. Possible?

    Hi All, Need to see if this is possible. I have a binnacle control that came with a used 2001 Optimax I just acquired. I'm mounting to a bass boat and have no use for the Binnacle style. I'd like to avoid the hassle of selling/buying new control is possible. Question is: Can I somehow rotate...
  6. K

    Help with USED Optimax purchase!

    Hi All, I'm looking at 2001 Optimax 135, Saltwater (used in fresh water). Its on a crate, came with current owners boat. He ecided to put an Yamaha on b/c he wanted on water and it was a working motor and the Opti became a low priority. Issue with the motor is that its not taking in fuel past...
  7. K

    '89 60hp Merc. May throw in towel- Help me say no

    Hi All. I'm looking for some help before I decide to wash my hand of this 2 month project. Lots of $ and it has dominated my life for 2 months. I really want this motor to run like it used to. As interesting and fun as its been I'm just getting SO frustrated and I'm spending time on this instead...
  8. K

    Disconnected Autoblend --Now no Tach!

    Anyone ever troubleshoot this issue before? I can't figure it out. I have the Clymer manual with diagrams but can seem to make sense of where this purple wire is to be connected. It used to flow thru the autoblend unit somehow. I pulled the Autoblend harness out it had a Black/Purple/Brown. The...
  9. K

    Proper Carb Jet size help

    Hi, SN B396723. 1989 60HP. 3 Cyl. Need Mercury manual jet sizes for this motor and also the 70HP (sn 5579017 THRU 6428680). Lots of conflicing data out there. If anyone coulds look this one up for me it would be much appreciated! Thanks! I'll take any feedback on the below commentary.. I'm...
  10. K

    Steaming Cylinder- Where's water?!

    Hi All, I keep burning up #1 on 3cyl 60HP, '89. SN: B396723. My other threads have more detail but I'll keep it quick for this question. I'm working with a very experience merc mechanic on this side for my project. Given that, I truly appreciate the additional perspective I get form this...
  11. K

    Stator, Triiger, Coil test results--Help with interpreting.

    Hi Forums, I'm a newbe who rebuilt a Merc 60, 1989. 0B396723. I cant find any ohm testing on this forum specific to my situation so I apologize if I'm redundant. Motor fires up instantly. runs decent on the water, only 28mph at 5,800rpm (10-13 prop) pushing a 17ft deepV tracker, a bit heavy...
  12. K

    Case of the Drips!

    Hi Forum. Before I tear into the just cleaned and put together carbs, has anyone seen this drip off the lower throttle screw before? If so, What ended up causing the leak. I reused the bowl gaskets as they appeared to be in great shape. I know thats not causing the drip at that spot..acutally...
  13. K

    HELP!! Missing Bolts on rebuild.

    Just when I thought I'd be firing up my rebuild this weekend I have two extra bolts (pictured: M8x 1.0 2-3/4") and two empty holes (pictured) missing bolts. Problem is that the "left over" M8 bolts do not fit! Too small. I have maticulously and methodically put this power head back together and...
  14. K

    Gasket Set- What is this O ring?

    Hello All. I'm hoping I can get help identifying a couple of these O-rings pictured. They cam in an OEM gasket set. I cant find any reference of the content (OEM: 43779A87) even here on iboats. One is 3" in Dia and pretty thick and the other is 2"dia. I have found that there is redundancy...
  15. K

    '89 Merc 60HP piston replacement..or not?

    Hello Forums. This is my first thread to iboats. Applause please! I'm rebuilding a 1989 Mercury 60HP. Piston #1 burnt up. I disregarded the warning beeps because I didnt know where it was coming from, very stupid I know. First time boat owner..lesson learned! The top carb was bone dry and I...
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