Johnson HD 15

[Ken Marshman]

Hello.  New here.  I’ve recently acquired a Johnson HD 15 and I’m wondering if the motor is rebuildable.  The motor spins and does not appear to be missing anything.  I have the motor, tool bag, owner’s manual, and spare prop.   Is there a service manual?

Ken

[John Gragg]

Hi Ken,

Everyone here calls this service manual ‘The Bible’. Unfortunately it’s not a free download, but for the $19.98 they ask it’s well worth it.

In my experience it’s likely someone will offer to get you a copy, so maybe hold tight for a day or two.

Good luck and welcome.

Best Regards

John Gragg
RIverside, CA

Just starting in the hobby, please be patient.

48 Sea King 5hp GG9014A
49 Sea King 5hp GG9014A
48 Johnson TD20
49 Johnson TD20
54 Johnson QD15
55 Johnson CD12

[crosbyman]

it was on  Garry Spencer’s  list of docs which is no longer available for free download  for members but  what is 20$ these days 🙂

the file is quite large  the only way would be for a member with a file transfer  like dropbox to provide a link .

https://watercraftmanuals.com/outboard/johnson/manuals/johnson-302231.htm

see ex: pages   sorry magneto file is  over 2 meg    this site will not handle >2 meg

 

before spending $$$ check  compression   head gasket  are cheap but a full rebuild may be $$$$  checkGC  for water  (may need  a reseal) etc….    great hobby  !

Joining AOMCI has priviledges 🙂

[Buccaneer]

this site has some good basic “how to” tips on those motors…..

http://pochefamily.org/outboard

Prepare to be boarded!

[seakaye12]

Ken if you want to PM me your e-mail address I can send you the “Red Book” that these guys are talking about.  It would be sent through a free file transfer service called WETRANSFER.

 

[Ken Marshman]

Thanks for all the replies.

I am patient.  I would like to set this unit next to my 25 Evinrude for trolling.

I will check compression.  What is a good pressure?

GC will need a seal.  No water just old grease.  Motor was stored indoors and hasn’t been on the water for at least 5 decades.  I know the original owner.  Husband has been gone and wife kept it on a motor cart.  It could really use a paint job.

I have discovered the Pochefamily site. Thanks

1.  I don’t know how to PM.
2.  As a member, is there a way to search the forums without tabbing through the pages?

Thanks Ken

[crosbyman]

some engine run fine at 65-7- sp anything above  isn’t bad  …all depends on wear and TLC  (oil)   given to it

GC…. use john deere  corn head grease but  a good  grease clean up won’t hurt .

 

to PM  click on the  destination avatar on the side of page     select  message on the pop up screen     fill in  subject  title  then details    hit send…..done 🙂

Joining AOMCI has priviledges 🙂

[seakaye12]

Ken Marshman wrote:

Thanks for all the replies.

I am patient.  I would like to set this unit next to my 25 Evinrude for trolling.

I will check compression.  What is a good pressure?

GC will need a seal.  No water just old grease.  Motor was stored indoors and hasn’t been on the water for at least 5 decades.  I know the original owner.  Husband has been gone and wife kept it on a motor cart.  It could really use a paint job.

I have discovered the Pochefamily site. Thanks

1.  I don’t know how to PM.
2.  As a member, is there a way to search the forums without tabbing through the pages?

Thanks Ken

Searching Forums for Members:

1. At the Menu above….go to MEMBERS ONLY/ ACTIVE MEMBER FORUM
2. Enter your search terms in the field that appears at the upper left of the page.
3.  The Similar Search Field that appears on the home page of the site  does NOT search the forums;  just public areas of the site.

[Ken Marshman]

Thanks for the search help.  Dave, had set me straight.

Ken

[lloyd]

70 to 75 psi  is good compression.

[Author]

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