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    Tachometer problem

    I have a 1991 Nissan 70 H.P. outboard. Had a lot of problems with it this year, first off it was fuel problems. Got that taken care of. Next it was battery and ignition problems. got those taken care of. Took the boat pout today and the motor ran "perfect". Could not be any happier with...
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    ignition problem??

    I have a 70 HP Nissan, 1991 model NS70A2E. I had two batteries on board with a two battery switch so I could run #1, #2 or both batteries. I changed batteries today, afterwards, I could not get any electric to the motor!! I have lights, radio, pumps, horn, etc. No electric coming from...
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    Help with my electrical system!!

    I had my boat running real good but had two bad batteries in it, so I decided to change batteries. I took all of the wires off of the batteries (had a lot of wires on both batteries from fish finders, bilge pumps, lights, radio etc.) and I had a switch in line to go to battery #1, #2 or both...
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    Primer Bulb

    I have a serious question about the gas line primer bulb on my boat. I replaced the fuel lines going from my under the floor gas tank, to the water seperator then to the motor itself. the lines are full of air and I pumped and pumped and pumped the ball and I am not getting any fuel into the...
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    Gas line size

    I have a 1991 Nissan 70 H.P. motor. It has a 5/16" I.D. gas line coming from my water seperator to the motor. I have to replace the primer bulb. I have three brand new primer bulbs in my garage, but they are for a 1/4" gas line. I was just wondering if I can get a reduced splicer and put a...
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    Need a part number that I cannot find

    Hey guys, I hae a 1991 Nissan 70 H.P. outboard, model NS70A2. I need the part numbers for the gearcase drain plug and the vent plug and the gaskets for same. Cannot find the part numbers to get these things ordered. Thanks for you help.
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    Water impeller 6 H.P. 'Rude

    I have a 6 H.P 1991 Evinrude, model E6REIA. I am planning on changing the water impeller during the winter months here in mich. Just wondering if I can just drop the lower unit to do this or do I need to remove the power head to do this job? I did a few impellers in the past but never had to...
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    Wont start when cold only

    I have a 6 H.P. Evinrude Model E6REI 1991 motor. I rebuilt the carb earlier this season and everything is super accept the fact that I have a lot of trouble starting the thing when it is cold. I don't mean cold outside, I mean even when it's 90 degrees and the motor has not been started for...
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    Does 2-cycle oil expire?

    I have a chance to purchase some good quality outboard motor 2-cycle oil. It is Sierra International TC-W3 2-cycle oil in 2.5 gallon sealed containers of it for $35 per the 2.5 gallons. The guy has 10 containers of it, and I can have as many of the ten jugs of it as I want for that price. If...
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    Nissan props

    I have a 70 H.P. Nissan outboard 1991 model. I have a prop on it that works great, but I want to get another one. All I see on the prop is one number, and it's a 12 inside a circle on the hub of the prop. Is this the diameter or the pitch? Also, I seen and ad local to me on...
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    Any way to make a choke adjustment?

    Hi guys, I reported last week that I rebuilt my carb on my 1991, 6 H.P. Evinrude, model E6REIA. It runs like a new motor as it has been running for the past week, with one exception. It absolutely will not start when cold when I first launch my boat. I looked at the choke, and the flapper (or...
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    Reed valves bad?

    Hi guys, I have symptoms of bad reed valves in my 1991 Evinrude 6 H.P. motor, model # E6REIA. I rebuilt the carb last year and I am going to rebuild it again this week since I bought OEM parts to do it with. Last year I bought a cheaper off brand kit and it helped but not a lot. I want to...
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    One quick question

    I'm still waiting for my carb rebuild kit to arrive, but one question please: When I squeeze the ball on the fuel line, it gets very firm. If I lay into it and squeeze hard after the ball is solid firm, is it normal for gas to be forced out of the front of the carb and leak out? It does...
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    Fuel problem, AGAIN?

    Hi guys, I have a 1991 6 H.P. Evinrude motor, model E6REIA. Had a lot of problems starting it and also trying to get it to idle last season. I rebuilt the carb last year and it helped a lot, but still very hard to start, but ran better. This year, very, VERY hard to start, and stalls...
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    Wher to mount fish finder?

    I currently have a small, cheap Hummingbird fish finder mounted on my dashboard at the driver's area. I am going to move it on the top/side of my boat near the rear so I can watch this fish finder closely while trolling with my trolliing motor that is on my transom. I like to see the fish...
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    What's my pitch?

    I have a 1991 70 H.P. Nissan motor. I removed my prop in hopes of getting it repaired during the winter months, it has some slight damage to the blades. The only markings at all that I see on my prop is the number 12 that is embedded right into the side of the prop. Would this be the pitch...
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    Gear lube?

    I have a 6 H.P. 1991 Evinrude & a 70H.P. 1991 Johnson motor. I live in Michigan where the water temps on our lakes run from 68 degrees down to 46 degrees during my boat fishing season. What vascocity lower unit oil should I use in each of the two motors? Thanks!
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    Motor /Prop I.D Help

    I have a Nissan 70 H.P. motor. I need help with what prop to buy. First off, the model # is NS70A2. In some cases, I see this listed as a 1991 model and other cases I see it listed as a 1992 model. I would like to buy a new prop as mine is getting a bit chewed up, and I would like a new one...
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    High RPM's

    Hi, I have a 70 H.P. Nissan, model NS70A2. I believe it is a 1991 model. Always runs great. Potential problem today. WOT usually indicates about 5400-5500 RPM's on tach. Today, the RPM's went all the way to 7800 RPM's. Is this possible without the engine blowing up or is it a faulty...
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    carb drain plug

    Help again, please. I just installed my new float bowl on my carburator for my 1991 6 hp Evinrude E6REIA motor. Well, the new float bowl came with a hole for a drain plug in the bowl and my old one did not have one. Therefore, I did not order a new drain plug (screw) for the new bowl...
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