I have the Black Max mounted to a 1980 Robalo 20' Center Console. I bought the motor last summer and have gone over that thing with a fine tooth comb. It started with maintenance but became:
new waterpump
new thermostats and tubing
new flywheel
stator
switch boxes
trigger
ignition coils
new...
Ok so I am working with my brother on a 1985 Mariner 175. While we were out on the water the motor would overheat at full throttle but cool down at idle/low speed. We did some quick google searching and came up with a possible poppet valve failure. We decided to do water pump, thermostats, and...
Last summer I bought a 1989 Mercury Blackmax to replace an early 80s Johnson. The Johnson overheated and I got a sweeper deal on the Blackmax which was incredibly clean and had great compression. I brought it home and ran it on a stand. The motor needed some maintenance done such as plugs...
My dad and I recently swapped out a 150 Johnson for a Black Max and we are having problems with getting any form of spark in any cylinder. We have 12v ignition hot via the purple lead on the motor and have removed the black and yellow leads for the kill switch with no luck. We also used the CDI...
I recently purchased what I believe to be a 1989 Mercury 150 Black Max. The transom bracket serial number is 0C185152. Nothing in my manual for a 1989 seems to match my motor so can someone confirm this for me? I cannot find the freeze plug with the number etched on the block. The other reason...
1988 3.0L Mercruiser
I went to start the motor up this season and it would not turn over. I removed the starter and replaced it due to it being in horrible shape. Now the motor was turning over but would not fire. I checked, cleaned, and gapped the points and replaced the spark plugs and now I...
I was replacing the water pump and I noticed that my intermediate shift shaft had some resistance to it. I removed the shaft and applied some 2-4-c to it and reinstalled it with its washer and cotter pin. I then reattached the gear housing and the drive shaft housing. As I was tightening the...
88 Glastron CX-19 with Mercruiser Alpha One
I bought all the parts to replace my intermediate shifter cable because I had all the symptoms of a faulty cable. I did notice while I was trying to adjust the shifter cable that I could not get the prop hand turned until it locked in gear. I am...
Here are the symptoms. I have an 88 Glastron with a 3.0L alpha I. I went through and fixed some wiring that the previous owner had creativelyhacked and spliced. I went to fire it up and it did not have any issues. When the rpms settled to about 800 I tried to put it into gear and when I did it...
I tried searching to find some info on replacing soft decking with cellular pvc. A buddy of mine used some pvc 1x6's on his gunwale and it worked out great. I was going to use a 4x8 sheet to replace the decking seeing as though it does not rot or anything like that. Any input on this?
