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I don’t know a whole lot about those motors except what gets posted and I’ve tried to save some of that info in text files or PDFs so here is some of what I have on past discussions from more knowledgeable members, manuals, diagrams, etc. Will add more as I find it.
viewtopic.php?f=2&t=14347
Actually they were very good motors when new, and I liked them. But that is not to say they didn’t have their problems. First the good part: Except for the early years, they worked well and ran good with good reliability. Normal service work is easy. But we like to focus on the bad part, don’t we?
The early models idled very poorly due to poor vibration suppression. That was fixed on later models and they ran fine. The upper front rubber mount was very prone to failure and a major job to replace. There is a rubber bellows boot on the shift rod also very prone to failure, and when it does, the motor runs poorly due to smoke inhalation. Some service work is very intimidating to the novice, requiring splitting the shell to remove the powerhead or that rubber mount, for instance.
The worst part is this is 2013 and BRP has discontinued most replacement parts, including the rubber mount and shift rod boot.
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Agreed, the early ones 64/65 had problems with idling and excessive shaking.I installed many anti-vibration kits on those in the late 60’s.———Good or bad motor ?—-I think they are great, and at 60 lbs at least I can still lift one of those.
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Frank is right, those little motors are nice. Granted they are not the powerhouses like the 1959 to 1963 10hp Johnson/Evinrudes and definitely not like the power houses of 1974 to 2006 9.9/15hp Evinrude Johnson motor.They do run very well when serviced, just like other motors. Due to its compact design, they can be a bit harder to work on than most motors.
The 1967 to 1973 9.5hp Johnson Evinrude motors have the vibration dampeners and run very low and smooth for trolling. Good fishing motor!! It will push a 10 to 14ft john boat quiet well!!
The throttle can flip down for storage and has a handle made for easy carrying. The motor weighs about 56lbs. A bit lighter than most motors in the same HP range.
Again, like all motors, you keep them up and service them routinely at home each season and you will have a fine motor.
If you have a chance to get one at a reasonable price, then buy it.
Attachments:
http://www.leeroysramblings.com/OMC_9.5.htmCajunCook’s 9.5 exhaust seal leaks info
The 9.5hp Evinrude/Johnson motors were known to have exhaust leak issues that would make a motor run poorly. Also, vibration dampeners were not added to the motor until late 1966 and definitely in 1967. So, the 1964 to 1966 motors idled a bit rough due to the excessive vibration, so the dampeners and slight carburetor adjustments improved idling from 1967 an on.
Suggestions:
– If you are running this motor in a barrel, then put a fan next to it so the fan can blow the exhaust gases away from the motor. The 9.5hp motor was built compact and sits low in the barrel, so it has a tendency to inhale its own fumes and idle and run very poorly. (Usually not a issue on the open water and while running and moving along.)
– If the fan does not help much, then remove the motor cover. If the performance improves then you have a exhaust leak issue.
There are four known areas that can leak exhaust gases inside the motor cover and smother the motor. That is why you have rev up the motor to run rich to stay running.
Leak 1 = Is in the first attachment picture and is part # 87 SEAL,Exhaust housing. If torn, cracked, miss shaped over the years or trash collected in between the side and exhaust housing then exhaust gases can accumulate up near the motor.
Leak 2 = Is in the first attachment picture and is part # 43 HOSE,Exhaust. If cracked, torn or loosely clamped then exhaust gases can escape and accumulate in the motor cover and smother the motor.
Leak 3 = Is in the first attachment picture and is part #78 BOOT,Shift rod. If torn, cracked or missing then exhaust gases can escape and accumulate in the motor cover and smother the motor.
Leak 4 = Is in the second attachment picture and is parts #6 SEAL,Impeller housing and part #7 WASHER,Seal. If missing then exhaust gases can escape and accumulate in the motor cover and smother the motor.
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