I am not the original owner but my cam seals started leaking out the weep hole last week of my 1982 motor. With the help of a Merc mechanic we tore it down to find what we believed to be the original cam seals. Not bad for 34 year old motor. In addition the cam snout was almost perfect. No...
My temp gauge suddenly does not work. I checked the obvious loose wire condition but all is in place Gauge moves slight[y with the key on and off. Reads no higher than 100* which is low peg on my gauge. I have yet to ground the lead at the sensor to see if the gauge pegs hot. I ran out of time...
I am the original owner of a 1993 Lund with a 90hp Johnson. I could never understand why oil would be leaking around the reserve oil tank until yesterday when I decided to take some things apart and find out why. As I peeled the black cover back there it was. There are at least 5 factory holes...
1982 470 with an MC1 outdrive. Last fall all my bellows were replaced during winterization. Because it needed it and because this was the easiest time to access it the trim limit switch and harness was also replaced. The boat was placed in storage and I lowered the outdrive to keep the new...
I have tried to locate the weep hole on my '82 470 to no avail. I have felt, scraped, probed on the front cover roughly in the 7 o'clock position but I cannot locate it. Could it be behind the bracket for my alternator conversion. Anyway below is a photo of the front of my 470. Give me a clue as...
1982 Merc 470. This video is shot on a warm engine thermostat open 160*. Mobil 1 15w50 engine oil. Idling @ 500 RPM. I have the idle down to assist in trolling. Noise is virtually the same on a cold engine. Noise goes away as soon as you pick up the engine RPM's. Should I be concerned or not...
Just getting my '82 Merc 470 ready for the new season and I was starting with fresh 50/50 mix of new coolant. The boat has not run since last October. I started by removing the circulating pump 3/8" brass drain plug and I expected to get at least a small amount of coolant to drain. Nothing. Not...
1982 Merc 470 #06122473.
In a thread by The-Tinman preventive maintenance to the exhaust system is mentioned. ( "Preventive maintenance on the cooling system (that includes the exhaust) keeps that from being much of a problem and keeps water out of the cylinders.") What is considered preventive...
Serial number of lower unit is 6134548. Lifting ring on top cover.
470 serial number 06122473 04706002 470.
Is this a 1:98 ratio unit?
Is this the correct lower unit ratio for the 470?
What generation name is this lower unit? MC1, Alpha, Pre-Alpha just for reference.
What lower unit oil is...
The 5/8" seawater hose that runs from the gimbal inlet to the voltage regulator and then to the heat exchanger. Can you replace this using automotive 5/8" heater hose?
Dennis
I have an Alpha I Gen I outdrive with the 4" square cap with lifting eye on top. The serial number if I copied it correctly is 6734548. It is part of a Merc 470 on a Grady White. Is there a link to a service manual? How can I determine what ratio it is?
Dennis
Pulled into my slip today and while I was tying up I noticed the rainbows coming from the rear of my boat. Came back an hour later and the oil slick was gently extending from the rear of the boat. Hit the trim button up and down and the oil slick increased significantly. I pulled the boat out...
