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  1. HotTommy

    I keep dropping things into the cowl well

    One of the smarter things I thought to do while replacing the piston on my 1993 Force 150 was to drape a large white cloth around the powerhead to catch anything I dropped. Unfortunately, during other stages of work the previous owner and I managed to drop several other things including nuts...
  2. HotTommy

    Troubleshooting 1993 Force 150

    Given the recent problems with this forum, I'll summarize my situation. Last winter I bought a 1993 Force 150, 2 cycle outboard that was known to be damaged and partially disassembled. With help from forum members, I've replaced a damaged piston, fixed a leaky head gasket, rebuilt the...
  3. HotTommy

    Installing propellor on Force 150

    I removed the propellor from my 1993 Force 150 to record the prop specs before I test it. I removed the nylock nut from the shaft, the tabbed washer, the large brass washer with notches for the tabbed washer, and the propellor. I was surprised to find that the two washers moved very freely even...
  4. HotTommy

    Need tips for cold starting Force 150

    I have finished restoring my 1993 Force 150 outboard. I've run it at idle for more than an hour in my tank, and it starts on the first try when warm. But I haven't mastered the optimum technique for a cold start. .... The system has a prime circuit rather than a choke, and the prime circuit...
  5. HotTommy

    It's Alive!!!!

    Thanks to the generous and knowledgeable people here on this forum, my 1993 Force 150 outboard roared back to life this morning. I bought it last winter as a disassembled project with several known problems. Here's a list of the major jobs I've done on it: Honed damaged cylinder wall Replaced...
  6. HotTommy

    Fixed engine trim on my pontoon boat

    I have a 24' pontoon boat with two U-shaped pontoons. It's about twenty years old and I bought as a rebuildable basket case last year. It came with a 90 HP Force outboard with power tilt. I got the whole thing up and running, and it served well for family fun on the lake last summer. Over...
  7. HotTommy

    1993 Force 150 tilt / trim repair

    I'm beginning work on the tilt / trim system on my 1993 Force 150 outboard, and I suspect I'll have more than the one question I'm asking now. So I'll be using this thread as I proceed. My first question regard the wiring for the tilt/trim system. According to the FSM, power to the two relays...
  8. HotTommy

    Fuel hose routing on 1993 Force 150

    I'm replacing most of the rubber hoses on my 1993 Force 150 as I reassemble it. I'm using "before" photos and the FSM to get it right. But I find it helpful to understand how it is supposed to work. So here is how I think it is supposed to work. Please let me know if I've got any of it...
  9. HotTommy

    Basic question about tilt/trim on 1993 Force 150

    Winter is taking one more shot as us here, so I'm inside thinking about future tasks rather than outside doing any of them. One of the jobs on my list is to repair the tilt / trim system on my 1993 Force 150. It was inop when I bought it in part because the previous owner had broken off two...
  10. HotTommy

    Force 150 head bolt torque spec ?

    I'm buttoning up my 1993 Force 150 outboard after replacing one piston. I just installed the head and a new head gasket. My factory service manual says the bolts should be tightened in the order specified to 75 in-lb, then 125 in-lb, then 175 in-lb, and finally 225 in-lb. My torque wrench and...
  11. HotTommy

    Spray lubricant for waterproofing engine?

    This is a curiosity more than anything important. I've noticed a thin layer of what appears to be axle grease covering some (but not all) of the engine. For example, there is some on two of the carburetor covers, but not the third. It sort of looks like someone deliberately sprayed some...
  12. HotTommy

    Force 150 spark plug question

    I am fixing a 1993 Force 150 outboard that was disassembled when I bought it. The old spark plugs were missing. One parts source listed two different plugs for my particular engine. One was Champion L-76V and the other was QL-76V. How can I determine the correct plugs for my engine?
  13. HotTommy

    Force 150 head gasket questions

    I recently purchased a 1993 Force by Mercury 150 HP two cycle outboard engine. it was not running and was partially disassembled when I got it. The seller claimed it ran well until his last salt water outing when it began to miss on the way home. He pulled the head in an attempt to diagnose...
  14. HotTommy

    Trouble removing flywheel from Force 150

    I'm a decent amateur mechanic starting from near zero with outboard motors. I need to remove the flywheel from my 1993 Force by Mercury 150 HP two cycle outboard. I have the factory shop manual, but I've encountered a problem that is not covered. ... The manual describes the steps to removing...
  15. HotTommy

    Compatibility questions: Force 90 and Force 150 circa 1993

    I have a good running Force by Mercury 90 HP outboard circa 1993. It has a 20" shaft lower unit. I have the opportunity to buy a 150 HP Force of the same year with a 30" shaft lower unit. The 30" motor is too long for my application. I'm wondering if I can swap the lower units without too...
  16. HotTommy

    Boat pulls to starboard

    I'm trying to get my pontoon boat to go straight under power. Some of what follows probably has nothing to do with the problem, but I'll include it all just in case. Here are the facts: 24' boat about 20 years old with two U-shaped aluminum pontoons 1995 Force 90 HP outboard I recently...
  17. HotTommy

    OK to wash lower unit?

    I am replacing the water pump on my 1996 Force 90 HP outboard motor. This picture shows how dirty the area around the pump is. I'd like to wash the area aggressively before I remove the old water pump, but I'm concerned there may be a way for water to get down into parts that shouldn't see...
  18. HotTommy

    Need help identifying Force 90 HP motor

    Hi all. I've read quite a few threads and see that identifying old Force outboards is not an uncommon problem. I'm hoping someone can give me a clue that might narrow down the list of likely motors to make my search for the correct model number a little easier. I only need it so I can buy the...
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