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    u joint

    Re: u joint Here is the procedure from my Clymer manual. Probably a good idea to invest in one. They have a special section just for the L-Drive. Removal starts at the number 13. It doesn't mention it, but I believe there are some snap rings on the inner end of the pivot pins that need to...
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    Force 75 ELPT missing and rough idle

    Re: Force 75 ELPT missing and rough idle Sounds like you've got several problems. First tackle the ignition timing. Easy to correct. The late model Mercury style CDM ignition system should be set to 32? BTDC at WOT static timing method. This is different than the older Prestolite ignition...
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    temperature guage wiring

    Re: temperature guage wiring The placement of the thermostat is placed in the water jacket after the water has circulated through the block. Just the opposite of an automotive engine. Water enters the motor on the left side and flows upward through the exhaust cover. Then it enters the...
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    temperature guage wiring

    Re: temperature guage wiring Sierra unit might work. Hard to tell unless you try it. Drilling a new hole is a little risky. You need to know exactly where to drill. Here's what another person did. He used a "T" fitting. Both his Tell Tale and sending unit come off the same hole. Sending...
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    What is this hole for?

    Re: What is this hole for? I looked at picture number 2 that shows your fuel pump. Looks like it may be the older style. The open port on your block usually has a 90? brass elbow and attaches to the newer style fuel pump using the hose that my finger is pointing at. Not sure your pump has...
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    Not a puzzler NOW!!Here's a puzzler???

    Re: Here's a puzzler??? Re: Here's a puzzler??? Hey Jerry, I think I found a way to do this. See if this works for you. Just have to tilt your head. :rolleyes:!
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    Not a puzzler NOW!!Here's a puzzler???

    Re: Here's a puzzler??? Re: Here's a puzzler??? I have a flywheel off of a 1988 125 HP motor. From the parts listings as far as I can tell, it is the same P/N for an 85 HP motor too. Anyways, here are some pictures. TDC timing mark on the flywheel is exactly opposite of the keyway shaft...
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    sputter at high speed

    Re: sputter at high speed The motor should be mounted so that the cavitation plate (red arrow) is pretty much even with the bottom of the boat. Do you have a tach to see what your RPM's are?
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    Can't prime/start after sitting

    Re: Can't prime/start after sitting This applies to the later model Force motors, so I'm not 100% sure it applies to your motor, but I'd think it would be similar if you have the Tillotson or Walbro carburetors. To set the float level, remove the carburetor, remove the fuel bowl and turn the...
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    Force 120hp L-Drive Overheats At High Rpms

    Re: Force 120hp L-Drive Overheats At High Rpms I measured the flywheels I have and you're pretty much spot on with the timing. 8 teeth to the left of TDC is 30? BTDC. I noticed something odd about you block. Maybe it's just a shadow or something. It appears that there is an opening in the...
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    1995 70hp force stator replacement

    Re: 1995 70hp force stator replacement Pulling the flywheel can be a bear sometimes. There are several style pullers that you can use. Most of the flywheels have the 3 bolt holes. This is the type of puller that I use. Some automotive stores ( Autozone, etc.) will lend you one for a...
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    Force 120hp L-Drive Overheats At High Rpms

    Re: Force 120hp L-Drive Overheats At High Rpms That gasket looks like the gaskets that I've seen and used many times without any problems. You mentioned that the block was hot tanked and power washed. Some blocks have 3 small rubber tubes inserted along the length of the cylinder in the...
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    1997 75 hp idle and starting problems

    Re: 1997 75 hp idle and starting problems bentle has some good things to check. I had a similar experience as you did after replacing the metal fuel line fittings on the carburetors. After I got everything back together, the motor ran fine but after a short while, it wouldn't idle. Motor...
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    Took the head off my motor, heres a video explaining everything.

    Re: Took the head off my motor, heres a video explaining everything. I always get confused on the timing. The manual indicates that the timing is set to 30? BTDC running at WOT. This is with the motor actually running at 5500 RPM. Kind of hard to do if you could imagine flying across the...
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    1999 sport jet force 120xr2 auto enrichener question?

    Re: 1999 sport jet force 120xr2 auto enrichener question? Not familiar with this set-up, but here is an explanation on how to test. Looks like it does not get 12V power from the battery, and it does not work by pushing the key in. It looks like it's pretty much automatic. It gets it's...
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    help '98 Force 120hp runs great on land, wont run on the water???

    Re: help '98 Force 120hp runs great on land, wont run on the water??? No you don't have to take the prop off. Just don't put it in gear. Here's what I use. It's a farm animal water tank. It's 2'X2'X4' and holds 103 gallons of water. Found it on Craigslist for $20. You need a meter...
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    Took the head off my motor, heres a video explaining everything.

    Re: Took the head off my motor, heres a video explaining everything. Specs from my Clymer manual. Connecting rod torque. Cylinder head bolt torque. Flywheel torque. Main bearings. Allen head bolts inside the intake that hold the two halves of motor together. Cylinder head torque...
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    FORCE 120 HP THERMOSTAT REVERSED was an old l drive block

    Re: FORCE 120 HP THERMOSTAT REVERSED was an old l drive block Well that's a new one on me. Shows you what I know! I still think it shouldn't make any difference. Worse case scenario, it overheats in which case you need to get a different head. Best case scenario, it works just fine. My...
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    Force 120 lower unit ?

    Re: Force 120 lower unit ? Those are weep holes to allow water to drain out. It's not uncommon for an oily mixture to leak out. If it smells like gas and is black, most likely exhaust residue. Nothing to worry about. If it's not black and smells kind of like sulfur, then it may be lower gear...
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    1997 120Hp Force one cylinder not working?

    Re: 1997 120Hp Force one cylinder not working? Seems like there's a tad more fuel/oil residue on the plugs than there should be. Kind of hard to tell. Do like Jerry mentioned, check the fuel pump diaphragm. Also make sure the "fuel enrichment" solenoid is not stuck open or leaking. This...
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