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    Is 105# of compression acceptable on a 2007 20hp Yamaha four stroke?

    Hello everybody...I am looking at purchasing a 2007 Yamaha 20hp electric start four stroke outboard. It has 105# and 107# of compression in the cylinders. These numbers are with the engine warmed up.Is that near normal for these motors? I am used to 2 stroke motors that usually have 120# or...
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    Please excuse a dumb question....

    I am helping a friend of mine sort out a 1990 9.9 HP Johnson and up until today everything was going great...until a pull on the rip cord ended with the rope not going back in. I assume the spring broke or maybe a spring retainer failed...any thoughts? We don't have a manual but I guess YouTube...
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    Does my new prop need to have the reverse slotted cup that my old prop has?

    Hi everybody...I have a 1990 Johnson 9.9 hp 2 stroke that needs a new prop due to damage. This original prop has a reverse exhaust cup with slots on it where the exhaust comes out but from the pictures I have seen online the newer props just flare out at the end instead of cupping back with the...
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    Is it possible to vent one of the newer EPA compliant non-vented fuel tanks?

    I have both plastic and metal 6 gallon portable boat fuel tanks with no manual vent. What a pain in the rear!...especially on a hot day when the plastic ones swell up. They both can have vapor lock issues while the engine is running if the fuel cap is fully tightened but will leak fuel due to...
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    How can I increase the idle speed in neutral on a 1990 9.9 hp Johnson?

    Hello everybody...I am working on a 1990 Johnson 9.9 that has 120 PSI in both cylinders, runs smoothly in gear to full throttle and idles nicely in gear. The problem is that while in neutral there is virtually no twist available in the tiller throttle to even slightly increase the idle speed...
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    What is a proper compression ratio for a 1957 3 hp Sea King outboard?

    Hello everyone...I was able to get a 1957 3 hp Sea King running yesterday after at least a decade of sitting. It starts easy, idles nice and runs smooth all the way up to full throttle. I did a compression test on it and got 75 lbs which compared to newer motors is quite low. Does anybody know...
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    can older tcw-2 oil be mixed with tcw-3 oil?

    Thankfully I didn't do this myself but I have a friend that has a 1957 3 hp Sea King that calls for 24 to 1 fuel/oil ratio. He bought fresh 93 octane gas today and used some 20 year old tcw-2 oil and the other half of the oil was new tcw-3....Can that be safe????
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    Trying to find parts for a 2000 Motorguide 46 lb thrust hand operated trolling motor

    I need the hand operated speed control unit for a 2000 Motorguide 46 lb Hyperdrive/Energy 12 volt trolling motor. Bass Pro shop no longer carries this models parts. Thanks in advance! :)
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    Rev limiter on a Mercury 4 stroke?

    Was wondering if the newer (2000 and newer) Mercury 4 strokes come with some kind of built in rev limiter. If not can one be added? Thanks!
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    Where to find carb floats for a 1987 Merc black max 150

    Does anybody know where to get carb floats for a 1987 Merc Black Max 150? Apparently they are no longer produced. :(
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    Interchange of parts from a 93 to a 95 Merc 75HP

    Hi everyone... I have a 1995 Merc 75HP with a bad lower engine bearing. I found a 1993 75 HP Merc that runs great and is cheap..1K with controls and trim and tilt work great. Compression is 120 per cylinder. Would most ..if not all.. of this motor bolt right on to the 1995 that I have? Thanks in...
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    Best trolling motor battery under $200???

    Hi everybody...I need to buy a new battery for my 12 volt trolling motor. I can spend up to $200. Any suggestions? I considered Walmart's top of the line battery for $100 but I have read a lot of reviews complaining of short life plus I would rather have a sealed battery if possible. Thanks in...
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    How do I change oil injection to pre-mix on a Merc 150

    Sorry if my last posting was unclear...Any tips on changing a 1987 Mercury 150 HP XR2 V Maxx to pre-mix? Any thoughts in general as to if these are reliable engines?
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    Tips on making a 1987 150 HP Black maxx pre-mix.

    Hi everyone....I am looking to re-power my personal boat with a larger motor. My hull can handle up to 150 HP. I found a boat/motor combo that would do the trick. The current 1995 75 HP Mercury on my boat was damaged due to an oil injection issue. The motor on the boat I am looking at is also...
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    Anybody like the Evinrude/Johnson V4 engines?

    I am considering buying a V4 to re-power my boat. I currently have a 75 HP Merc that is dying. This company I found sells about 100 V4 Johnson/Evinrudes per year. I know these engines were made for around 30 plus years. This company cannot guarantee which year I will get but I can specify a...
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    Lower unit squeal?

    Hi everybody...I have a 1995 Mercury 75 HP outboard that developed a squeal and vibration yesterday. I just had the prop seal and shift shaft seal as well as the water pump replaced on this motor. The work was done at a reputable dealer that I have used before. A small lower unit leak began...
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    soft fuel primer bulb

    Hi everyone.... I have a 2003 Bass Tracker Targa with a 90 HP Mercury outboard. I have 2 issues that may be related. First of all the fuel primer bulb doesn't get near as firm as all of the other ones I have used over the past 20 years on various other boats of differing makes. This is by far...
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    1995 Mercury 75HP has a gear lube leak after hitting a rock.

    While in Minnesota I hit an unseen deep water rock at around 20 MPH and gouged and put a slight bend in my otherwise perfect lower unit skag. .Did a quick inspection and saw no cracks. Boat ran fine with no vibrations or issues for the last 3 days of the trip. After sitting for a month after...
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    Motor Guide Pro Series 54 LB thrust 12 volt trolling motor won't shut off.

    2008 foot-operated motor won't shut off no matter what position the 3 way pedal toggle switch is in or even if the rotary speed dial switch is in the off position. Model number 950010200 and serial number 9B397606. Any ideas? Thanks in advance.
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    Are the 2000 Mercury 150 HP XR6 motors reliable or boat anchors????

    I am looking at a Bass Boat with a 2000 Mercury XR6 150. Hasn't run much in the last few years but seems to run well. Are there any problems that are unique to this motor? I have read about oil pump failure with these engines. Any other inherent issues? Thanks in advance!
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