1972 9.5 slipping out of gear??

[Evinrudej]

Hi guys I just purchased an evinrude 9.5 ‘72. Motor runs fantastic and until it’s first run today :/ changed the gear oil last night and noticed there was a rubber seal missing from the top drain plug screw but still installed anyways. Today I took it out for the first time and it went into gear fine and I was having a blast with her until I started it back up put it into gear and anything over pretty much the idle speed it would pop into neutral and my only way to get it back into gear would be to idle it down as low as I can and slowly give it gas and hope it grabs. Anything over idle speed it will just go into neutral. Before this I’ve ran it many times in a barrel of water and it got up to speed just fine in forward gear seems like everything was just fine. The lower unit oil I just changed looked Great like it was recently changed no signs of milky oil. Drained lower unit oil and it went from a nice gold to a milky gold which means water got in some how. I don’t know if it could have been from the missing gasket on the drain plug screw because I’ve never had a problem with a gear oil change ever. Thanks guys.

 

[Evinrudej]

I’m assuming this problem resigns with the milky gear oil and not a bad clutch dog or gear adjustment. I immediately drained the oil out when I got back to shore. What’s next ?

 

[racerone]

Maybe the rubber drive hub in the prop is slipping.-----Or check shift adjustment up at the top .----You will find the linkages in front of carburetor.

 

[Crosbyman]

see pics as for milky oil.... use proper oil screw nylon washers

 

[kbait]

If it physically pops into neutral, bad clutch dog, of improper shifter phase adjustment. If it stays if forward gear as you increase throttle and lose thrust, you likely have a spun prop hub bushing. Good luck!

 

[F_R]

Busted rubber motor mounts????

 

[Evinrudej]

well today I put some new lower unit oil in the gear case put both the drain plugs back on with washers. Put it into drive and it will Rev up a little higher in drive now but still pops into neutral when you go any higher. After testing drained the oil and it wasn’t milky at all it looked perfect. Pressure tested the gear case and it checks out. Doesn’t physically shift into neutral like metioned above. After it slips gear I have to shift back into neutral then in forward to get the prop moving again. Reverse doesn’t work. Not sure what to do because the engine is very clean and low hours and runs amazing.

 

[Evinrudej]

Part number for prop hub bushing ?

 

[JimS123]

The milk was the lost gasket. The slip is the clutch dog. Often they can be turned around instead of needing to be replaced. Since you don't have reverse, you need a new one. Hard to find that part for a near 50 year old motor.

 

[Crosbyman]

Try tim's outboard or classifieds on AOMCI site.

did you check and adjust the linkage in the PDF I sent you .

you may also want to verify the shift rod link to make certain the bolts fits in the rods recess correctly

btw you did not remove the philipps head screw in the gearcase did you ?

 

[Evinrudej]

Have a part number for it Jim? I suspected this is one of the main problems too. Thanks

 

[JimS123]

Have a part number for it Jim? I suspected this is one of the main problems too. Thanks

No, my 9.5 never needed one. Just google it. But be ready for sticker shock. When I wanted to replace the one in my 1974 Evinrude 18 it cost more than the motor was worth. I ended up turning the old one around and then being sure to go slow in reverse.

 

[Evinrudej]

Should I also replace the forward and reverse gear I’m assuming they would be warped as well from the milky oil

 

[racerone]

Parts ( used ) can be found at reasonable prices.

 

[Evinrudej]

No, my 9.5 never needed one. Just google it. But be ready for sticker shock. When I wanted to replace the one in my 1974 Evinrude 18 it cost more than the motor was worth. I ended up turning the old one around and then being sure to go slow in reverse.

Should I also replace the forward and reverse gears I’m assuming they got a little warped too from the milky oil

 

[kbait]

You said: Doesn’t physically shift into neutral like metioned above:
Spun prop hub bushing.

 

[racerone]

The first thing I would do is take it apart for inspection.----Check bushing above pinion gear.

 

[kbait]

No reverse could be improper shift phase linkage adjustment.

 

[Evinrudej]

You said: Doesn’t physically shift into neutral like metioned above:
Spun prop hub bushing.

I plan on just rebuilding the whole unit anyways will be taking apart tomorrow and will update on the results. Do you have a part number for the prob hub bushing I can’t find it anywhere

 

[racerone]

The rubber hub is not a factory replacement part.-----Prop shop may have it.-----Take it apart , inspect all parts.-----Then make a plan.