The iboats forum moderators are excited to announce that at this time it appears the iboats forums posting pictures function is working once again. Though we cannot promise for how long, we're hoping for indefinitely.
Hi All,
Have a 1977 Mercury 850. I pulled the upper bearing cap today to inspect the bearing. My bearing felt fine but I noticed I have some side to side movement of the crankshaft ( right at .005 ) When I re-install the bearing cap, there is
no play. I'm thinking I have a problem!! I have...
Hi everyone,
I have a 1977 Mercury 850 Serial #4719943. The bleeder line which runs from the bottom of the crankcase to top of the crankcase has a check valve at each end. The upper valve is one way in, the lower valve is a one way out. This bleeder line supplies the upper main bearing with...
Hi all,
I have a 1977 Merc 850 and have found and purchased a NOS lower cowl seal still in the package. Does anyone know if it is possible to assemble this seal (P/N 60898) without taking power head loose? If not how must I go about installing the new seal?
Thanks
hereto
I have a 1977 mercury 850 with ADI ignition. With the engine not running I get 12.5 volts at the battery. with the engine running I am now getting 13.2 volts at approx. 1500 rpms. I remember checking the voltage with engine running before and was getting something a bit over 14 volts. My tach...
Hi all,
Have a 76 - 85hp merc with PTT. Pump is the A series, 4 hose , 2 cyl. Noticed when I applied additional throttle in reverse the engine would jump a bit, Does this everytime. Didn?t before.
Checked out all mounting hardware, and nothing is loose . I?m quite sure the problem is my...
Hi All,
Have a 1976 850 Merc, this has the ADI ignition. Need to replace the rectifier, would like to save some bucks by going with the Radio Shack version I have been reading about in the forums. I have contacted 2 near by stores and told them I was looking for a 25amp 200v Full-wave...
Hi all,
I have a 1976 Merc 850 which has a bad power head. I have a chance to pick up a 1978 Merc 800 80hp.( this engine is power head ONLY) I plan on using all my components off the 1976, Carbs, flywheel etc. From what I can tell the 80hp 1978 thru 1983 all should bolt up. Am I missing...
Hi,
Need to replace the upper oil seal on my old merc ( 1977 850 ). Have been told I need to pull the end cap? I don't see why the end cap needs to be pulled just to replace the oil seal. Am I missing something? Planned on carefully prying out the old seal, and pressing in a new one. Would...
Hi all,
I have a 1976 Merc 85hp which is mounted on my boat transom and I am preparing to replace the power head with another I have acquired. I am going to just lift out the power head with the help of a friend, will not be using a hoist as the power head is not that heavy.
Now, here...
Hi All,
Trying to find a tach that will match the other gauges on my dash. Not doing any type of a restoration so the tach doesn?t need to be pristine, just needs to work. This gauge was sold by Quicksilver and was a popular model in the seventies. There were a bunch around, I?m just having...
Hi all,
Hope someone out there can shed some light on my idle issue, as I have spent the last year trying to find the problem with no success. I won?t go into what all I have done to try and find what is causing the problem but it has been considerable.
Here is the problem. After...
Hi all,
I recently picked up a used switch box for my 850. I am guessing it is a CDI. It has a black wire comming out of the potting which my original box did not have. I am assuming that this wire is intended to be hooked up to ground? Can anyone verify this for me?
Thanks in advance
hereto
Hi all,
I have a 1976 850 Mercury and am replacing the bleeder line. At each end of this line there is a brass fitting with a hose barb to which the line attaches. I have not been able to find any info on this bleeder line in either of the manuals I have. Questions I have are listed below...
Hi all,
Sure could use a bit of help. I have a 1976 Merc 850 with ADI ignition. This guy had been running GREAT up to a couple of days ago. My out of gear Idle is set at 800 RPM, when I would put it in gear it would stumble and die. Would restart, it would idle great then die when put in...
I have a 1976 850 Merc which I am about to install a 15psi temp gauge. My first thought was to install the line with a "T" to the pee tube. Was told it would be better to install the line by removing a plug from the block? I can't find a plug to remove, can someone point out where this plug...
Hope someone out there can help me out. Am trying to find a 70's model speedometer which will match my tach. The speedometer I am looking for has a Mercury PN. 55756A1 and is no longer available, so I'm looking for a used one. That part no. can be either a square or round face. I need the square...
I am going to be making some small repairs which will require my working with about a table spoon spoon of gel coat at a time, How much hardner ( Drops ) will I need to mix with a table spoon of gel coat to get a proper cure. I purchased the gel coat which is matched to my color hull from Ranger...
I have a 1976 Mercury 850 I could use some help with. Yesterday I noticed a small amount of milky material comming from the lower unit while it was setting at an idle. Went down to check on it the next morning and discovered a thick black residue running down the length of the skag, this was...
I have a 1976 Mercury 85hp with the early model pwr trim/ tilt, two cylinders and pump mounted in boat. I checked the oil level in the pump and saw that it was correct, but the oil looked very dirty (black). I have two manuals, Clymer and Selco , neither makes any mention as to changing the oil...
I have a 1976 Mercury 850 85hp serial no. 4367785. I am wanting to put a water pump kit in this guy but I am concerned about getting the wrong kit. I would greatly appreciate some help to make sure I purchase the correct kit.
hereto
