impeller install 1964 40hp johnson

shawpdx1

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going out to do this today. are there any hidden bolts to know about when dropping this lower unit? I see a inspection plate on the leg is this were I break the shaft to drop it? thanks Ted
 

coolguy147

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Re: impeller install 1964 40hp johnson

im not sure if this motor is the super quiet model but u need to take off the outer shell by 8 philip head screws. then there is a hidden bolt where the exhuast exits
 

tashasdaddy

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Re: impeller install 1964 40hp johnson

plate is where the shift shaft connects. DO NOT TOUCH PHILLIPS SCREW ON THE SIDE OF THE LOWER UNIT BULB.
 

shawpdx1

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Re: impeller install 1964 40hp johnson

yes she is a super quiet cool is this hidden bolt the shaft bolt? I don't need to loosen pwer head on this model to remove lower unit do I?
 

shawpdx1

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Re: impeller install 1964 40hp johnson

ok so that inspection plate is were shaft seperates from power head? no need to take apart leg
 

shawpdx1

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Re: impeller install 1964 40hp johnson

pulled the lower unit bolts opened the cover plate on leg exposed 2 3/8 bolts on looks like the shaft lossened them no action on dropping the lower unit wont budge BTW do I need to mark anything before I seperate this unit? thanks
 

tx1961whaler

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Re: impeller install 1964 40hp johnson

For the shift rod coupler (the thing behind the plate), keep the top bolt tight and completely remove the bottom bolt.
 

shawpdx1

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Re: impeller install 1964 40hp johnson

Imguessing its going to take some coaxing Im sure its not been off in years
 

shawpdx1

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Re: impeller install 1964 40hp johnson

Ive removed 6 lower bolts and removed the bottom bolt under inspection plate the shaft is loose but lower unit wont budge do I need to remove that philips on the lower unit to get it to drop?
 

shawpdx1

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Re: impeller install 1964 40hp johnson

can anyone tell what step I have missed? thanks
 

tx1961whaler

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Re: impeller install 1964 40hp johnson

DO NOT take out the phillips screw.
There may be a 7th bolt that is hidden by the outer exhaust cover on some models. If there is not a hidden bolt, then the driveshaft may be rusted into the crank.
 

shawpdx1

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Re: impeller install 1964 40hp johnson

Thanks TX I didnt take out that phillips. man that must be in good I guess pry like heck? tap something in to try and seperate? Im at a loss
 

shawpdx1

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Re: impeller install 1964 40hp johnson

I can't see a hidden bolt anywhere afraid to pry to hard on it. Im guessing It must just be rusted real good.anything work to get it to break loose? I can imagine how that impeller is going to be to get out.
 
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