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    Nissan NS9.8 B 2 Stroke RPM Measurement

    Just picked up a 2002 Nissan NS9.8 B 2 Stroke outboard on a 10 foot rib inflatable. The combo runs great, but I am having trouble sorting out the idle RPM. The engine runs great, pushing the boat 16 MPH. It is a 2 cylinder 2 stroke and I am trying to measure the RPM using a Oppama PET 1100R...
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    New Solas Amita 4 blade for 17' whaler and 70 hp johnson 2 stroke?

    I have a stock OMC 13.25 x 15 - 3 blade aluminum prop on my 70 hp 2 stroke Johnson motor. With 2 people in the boat I am hitting 6200 RPM and around 31 MPH. Max RPM should be around 5500 RPM for this motor. Would a 4 blade Solas Amita in 12.75 x 17" pitch give even better low and mid range...
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    1984 Yamaha 40hp 2 stroke smoking at idle

    I have had this engine for around 8 years and just recently I have noticed that is smokes at idle. Starts right up, runs strong up to redline, but when bringing back down to idle is blows smoke. It has never done this before, generally at idle there hasn't been any smoke at all. Does this...
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    Troubleshooting Buzzer in 1995 70hp Johnson

    My engine is running great, but the buzzer is non-functional. When I ground out the temp switch wires (either the tan/blue or the white/black) on either the engine side or control side and turn the key to run the buzzer does not buzz. I took the cover off of the controls and wired the buzzer...
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    1995 Johnson 70hp dies at idle

    I recently rebuilt my 1995 70hp motor since one of the pistons was burnt. I am in the initial break-in period and the engine will no longer idle. I ran the motor today for 2 hours with double oil (VRO plus 50:1) in the tank, and replaced the spark plugs once since the engine would not start...
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    Fiberglass repair on 41 year old boat

    I just started pressure washer sandblasting the multiple layers of bottom paint off of my 1969 Boston Whaler. What I have found has been less than satisfying. I was hoping to wetsand and buff the bottom, but it appears the gelcoat is too far gone for that. I guess the idea now is to fill and...
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    Identifying quck start and disabling it?

    I don't think my 1995 70 hp Johnson has quickstart, is that correct? Is there a matrix anywhere that states what years/models have it? Based on a search, if you have an orange wire coming from the stator you have quick start, is that correct? Also, grounding the temp sensor will disable quick...
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    Replace main bearings in rebuild of 1995 70 hp motor?

    I started rebuilding my motor tonight and just realized that the rebuild kit from Powerheadkit.com only came with a lower main bearing. My current lower main bearing feels really good as do the two middle main bearings. The upper bearing was completely dry, but very smooth. I actually can't...
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    Adjust carb float, pliers?

    I read everywhere that the carb float should be parallel when upside down and in the manual mentions around 1" of droop when rightside up. If these settings are off, how do you adjust? Bend the bracket with pliers? That is the only thing that is not clear in the super secret file. Chris
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    Where does the ground/galvanic wire go?

    Putting my 1995 70 Johnson back together and didn't capture in any picture where the ground wire is connected to that goes from the exhaust housing to the tilt bracket to somewhere? up in the engine bay. Chris
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    1995 Johnson 70 hp burnt piston troubleshooting

    I am waiting for my block to come back from boring and honing so I can start rebuilding it. The previous owner burnt a hole in the center piston. I was warned to figure out why the motor burnt the hole since it will just happen again so I am trying to figure out how to troubleshoot it. What...
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    What color for my 1995 70 hp Johnson?

    I think my motor was repainted so I am not sure what the original color is. Were they originally solid black or smoke gray? Thanks Chris
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    Tidewater vs Loadrite vs Shoreland'r for 17' Whaler

    I need a new bunk trailer for my whaler that weighs around 1500 lbs fully loaded. On the low end is the 5-starr Loadrite welded model 5S-17220090V for $1399. On the high-end is the Tidewater for $1645. Any pros and cons to these trailers? Is the 5-starr loadrite a decent trailer, anyone have...
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    Can't tilt motor up

    I have a 1995 70 hp Johnson with electric trim and tilt. I disconnected the controls so I cannot tilt the motor. I unscrewed the manual release on the starboard side of the engine and the motor tilted all the way down. When I try to lift it up I am met with a bunch of resistance. What could...
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    1995 Johnson 70hp zero compression

    Just bought a boat today that has a Johnson 1995 70hp 3 cylinder engine. The engine starts right up but runs really rough. I had my compression tester in the car, but decided to leave it and low-ball the seller. Tonight I did the compression test and two of the cylinders are 100 psi and the...
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    40hp 2 stroke Yamaha and 16' aluminum Starcraft

    I need a reality check for my boat motor combination since I am not sure the tach is reading properly. This is my first 2 stroke outboard so I am not to familiar with its operation. I have 16' aluminum starcraft with 40hp 2 stroke Yamaha model 1989 6H4 L 558276 - 40etlf. At warm idle I am...
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    40hp Yamaha 16' Starcraft performance?

    I finally got a Teleflex tach installed in my 16' aluminum starcraft with 40hp 2 stroke Yamaha model 1989 6H4 L 558276 - 40etlf. I found in the Yamaha shop manual where they mention setting the tach to 6 poles for this particular engine. At warm idle I am showing around 600 rpm and at WOT I am...
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    best low-cost tach for checking props?

    I have a 1986 40hp yamaha 2 stroke with controls that has a tach output. I only want to check WOT for prop selection. Besides buying a teleflex gauge or a tinytach, are there any portable inexpensive tachs that you guys use for temporary measurement? Chris
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    1986 40hp Yamaha, should it charge the battery?

    I have an engine which seems to be the combination of a 1989 6H4 L 558276 - 40etlf (lower unit, bracket with electric tilt, and cowling) and a 1986 powerhead. I spent some time on the phone with Yamaha support and this is what we came up with the serial numbers on the block and bracket and the...
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    Prop for 40hp 2 stroke yamaha on 16' aluminum startcraft

    I have a 16' aluminum startcraft with a 40hp yamaha 2 stroke. I am currently running a 11.25" x 14 prop and run 28mph at WOT according to my GPS. I do not have a tach yet, waiting for a response in another post, but want to buy a new prop since mine is dinged up from the previous owner. If I go...
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