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Mercury Mark 30 Hipo Outboard Motor (Mercury Marine) Questions & Answers
How do I trouble shoot a 25hp Mercury ELP four stroke that is not charging the battery. It is a 2001 year model.
Ahhh Mercury electrical... always a problem. The charging system on a mercury is really simple. You should have 2 yellow wires coming from the under the flywheel and possibly a black one running with them. These are high voltage a/c. They run to the rectifier/regulator which converts the a/c to d/c and sets the voltage to around 14 volts. To test the charging circuit, disconnect the yellow wires from the rectifier/regulator, *CAUTION HIGH VOLTAGE!* hook up a meter, set to read a/c volts to the two yellow wires and crank the engine, be careful not to touch the wire ends while doing this, it could be a shocking experience. You are just looking for any voltage above 12 volt a/c. If you start the engine during this test you could see upward of 100 volts. If this test fails replace the charging coil under the flywheel, it the one with the yellow wires that you just tested. Chances are this test passed with flying colors.So plug it back in and test the rectifier/regulator. Disconnect the red wire(s) and set your meter to read > 12 d/c volts, there may be 2 red wires. Start the engine and test from the red wire(s) to engine ground, you should see >12vdc. 99.9% of the time this test fails. So replace the rectifier/regulator. It is the weakest link. They will fail for something as simple as a loose or corroded battery terminal.
Starter doesn't engage everytime on my merc outboard
Your problem can be as simple as a bit of corrosion on the wire terminal on the starter/ solenoid .Also check switch and ground to the motor. A bit of emery paper and wire brush to clean all contacts and some dialectic grease on contacts afterwards will prevent future corrosion. If that doesn't help, you could have a " dead " spot on the starter. Then would need a replacement starter.
How to clean petrol filter
not familiar with "Hipo" motor, but the early mercs had a filter under the fuel line connecter to each carb, then they started putting them under the intake of the fuel pump under a plastic cover.
1977 9.8 hp Mercury Outboard Motor Serrial # 4605112, it's an electric start with a short shaft
put it in forward gear. Drop the lower off by releasing the bolts and nuts holding it holding the lower on. (one is hiding under the back pick up screen)- some models had a plug in the back top of the exhaust/intermediate housing hiding an allen head bolt pointing down.Once released, put a protector in a vise and clamp the lower to the bench.2 screws or bolts will hold the water pump cover on. (the drive shaft runs thru it) Clean the carbon and rust off the drive shaft will allow the pump housing and impeller off the lower. Retrieve the funny looking key drive which runs the pump.Inspect the shaft, the lower unit oil for water. and find all the pieces of the water pump impeller which may have gone places they shouldn't have.- including the outlet tube from the power head. Check this by putting a tube on the end and blowing- you should hear and feel the pressure in the exhaust and tell tale hole. Now take the model number , the old pump parts to the marina for a replacement. Do a side by side comparison at the marina so you get the right stuff. Check the inside drive of the rubber impeller and see if they are exactly the same.NOW- put the new wear plate / gaskets and drive key on, hold in place with grease. Slide the impeller on the key and spin the drive in both directions to be sure it has the impeller and will securely turn it. Put grease in the cup of the pump housing to prevent dry start and help seat the impeller blades. Spin the shaft as you lower the housing in the pump so the blades all face in the right direction (clockwise). Screw in the bolts. Grease up the seal the watertube goes in and the spline end of the drive shaft.Up the hole it all goes, now you only have to spline the shifter (it hasn't moved has it?) The drive shaft and the water tube all at the same time.Check the shifter for correct position and bolt it down
I want to add a
The tach wiring for an ignition signal should be connected to the negative side of the ignition coil.
Out on boat when starter motor on mercury 70hp
Spin Backward? that's not good. Would check the battery connections. If backward- you may have other problems associated with backward battery connections and ignition systems. If it's just an optical illusion- you should try to bridge the starter solenoid with a jumper to the big terminals and see if the starter is really bad or just a low battery. If your battery is down, your charge system on the motor may be giving you trouble.
Your starter when sitting on the bench and directly hit with 12 volts should jump substantially with the torque. If it just spins like a fan motor- it's shot.
If jumping the solenoid makes it work, thats the problem. But clean or replace the cable ends on the bat and solenoid first.
Just a note: you should be able to pull start that motor by wrapping a noted rope round the pulley on top of the flywheel. If you ever get stuck again. Just watch where the knotted end of the rope goes.
The serial # on my Mercury 700 outboard is 4978147. What year is it?
Not all serial numbers give the year of manufacture. It will be in one of two locations on the label you got the serial number from. Look on the next line down under the actual serial number. There should be a four digit number. This is the year of manufacture. On some labels there is a small square in the lower right corner, next to the CE mark, with a two digit number in it. This is the last two digits of the production year. 02 is 2002, 04 is 2004 and so on.
I have a 2013 50hp 4stroke mercury outboard engine what is the rod cap tourqe specs to
Product Knowledge Handbook - Mercury Marine
www.mercurymarine.com > pdf > Mercury-Outboards
PDF
Specifications, features, and options are subject to change without notice. ... Connecting Rod: Linkage that connects the crank to the piston in an engine or ... crankshaft main bearing cap is secured by four bolts, rather than the standard two, for ... Found on all Mercury Marine 4-stroke ... At top speed, Mercury 50hp Four.
mercury torque specs - The Hull Truth - Boating and Fishing ...
www.thehulltruth.com > ... > The Boating Forum
Nov. 3, 2017 - The Boating Forum - mercury torque specs - im looking for mercury powerhead torque ... Proportional Serif, Monospace Serif, Casual, Script, Small Caps ... sorry for the novice question, but is this correct for marine engines? if so, ... 4-16 - titled POWERHEAD Crankshaft, Pistons and Connecting Rods (4 Cyl.) ...
Missing: 2013 cap
40/50/60 FourStroke - Brunswick Marine in EMEA Download ...
download.brunswick-marine.com > outboard > 4-stroke
PDF
information. The description and specifications contained herein were in effect ... Name of engine manufacturer: Mercury Marine Technology Suzhou Co., Ltd. Address: ... 4 stroke. Identification of Engines Covered by This Declaration of. Conformity. Name of ... in loosening or disengagement of the steering link rod. This can.
torque specifications for 1983 50 hp mercury outboard for ...
forums.iboats.com > ... > Mercury & Mariner Outboards
Jul. 17, 2013 - I think those bolts are 5/16 and for clean dry threads 20 ft-lbs is roughly the rating. That's for a grade 5 (3 marks on the head) but marine engines ...
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