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  1. K

    Trim sending Unit

    The socket head bolt is loose and may be corroded in the hinge point of the gimbal ring. Get a 1/2” Allen wrench and try to tighten it. That is the only thing that turns the sender.
  2. K

    AQ125/270 Still overheating (PLEASE HELP)

    On the suction side of the raw water pump remove that hose, get a piece of hose connect it to the suction side and submerge the other end in a bucket. If the pump still does not pull water then the raw water side of the heat exchanger is blocked. You did say before that the exhaust manifold...
  3. K

    AQ125/270 Still overheating (PLEASE HELP)

    When the drive is submerged below the swivel joint no air can enter the incoming water. When on plane the joint is above the water line allowing air to enter. No matter what, this area should be addressed.
  4. K

    AQ125/270 Still overheating (PLEASE HELP)

    Sierra #18-3888 lower gear unit seal kit. You need to drop he lower gearcase and replace these seals. Anytime an overheat occurs above planing speed this must be first addressed. It is a common problem with AQs. All needed tools are fractional, the oil needs to be drained and refilled after...
  5. K

    Repairing Coupling assembly

    First thing to do when the boat is on the trailer is remove the lower drain plug from the gearcase. It may be possible that the drive seized up from lack of oil which caused the coupling to fail. If that happened see if you do not have some fishing line wrapped around the propeller shaft...
  6. K

    Can Rollers Damage the hull?

    No doubt about bunk style trailers, almost every boat I have owned over the last 45 years have had them and the last 3 I added the plastic slides. In the 30+ years that I had a stern drive repair shop I saw my share of dimpled hulls from not enough roller support. Another cause of hull damage is...
  7. K

    Aq231a Outdrive, dry start up

    Tighten the flushout with a bungee strap and plug the water drain hole in the bottom of the gearcase.
  8. K

    Can Rollers Damage the hull?

    I have been told that Boston Whaler will not warrant a hull if it is on a roller trailer. I have no problem with them but needless to say they make it easy to accidentally launch the boat on the ground if you are not careful.
  9. K

    Volvo Penta 7.4 overheats

    Possibility that the plastic fitting in the pivot housing that connects to the water supply hose is broken. Volvo # 3883597 Appears to be the part number. You will have to pull the drive. Also a good time to check the alignment and grease the joints.
  10. K

    Boat Restoration Project

    That looks like a White House hull. If it is it was probably built around 57-58. The Ford truck would be a better value.
  11. K

    MerCruiser 3.0 - loud metal noise when in gear

    Sierra Marine # 18-8311. Gimbal housing repair kit
  12. K

    196 351W Flywheel

    The ring gear is replaceable. NAPA stocks them. With a brass drift and a suitable hammer the old one is easy to drive off. Heat the new one and just drop it on the flywheel, once cooled re mount it.
  13. K

    Oil Pan

    After painting the pan and timing covers and mounting them I also coated them with 3M under body spray. The very first Mercruiser V8s had brass oil pans.
  14. K

    Oil Pan

    If the timing cover is also plain metal now is the time to also replace it. It was never painted in areas under the balancer.
  15. K

    AQ145a

    Be sure to replace the exhaust manifolds with the genuine Volvo style. Most likely the inside of the #4 exhaust ports are going to be corroded also. They can be repaired at a aluminum welding shop then re surfaced.
  16. K

    Engine siezed

    Let the current repair yard finish the transom repair. Tell them you do not have the funds for a new engine and take your boat home along with the damaged engine. Check around for an independent “mom & pop” repair shop within a reasonable inland driving distance. Have them do the engine...
  17. K

    351W Aft Motor Mounts

    In your case they are worn out. When they are good it is possible to freely rotate the fiber washer between the transom bracket and flywheel housing.
  18. K

    Flywheel not engaging?? Mercruiser

    There is rust on the armature shaft preventing the gear from moving to the flywheel. You might be able to clean the rust off once the starter is off. The starter is probably good and should work.
  19. K

    1976 Mecruiser 351W Ignition System

    The hose clamp is to insure that the starter is marine approved to seal out any gasoline fumes from entering the housing and causing an explosion. The automotive band used on a similar starter is plain steel which would not last in a moist bilge. Also the difference between the automotive and...
  20. K

    1976 Mecruiser 351W Ignition System

    The only other way to get the gear retracted is by running it against a wire buffing wheel which simulates the engine‘s flywheel.
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