Newly acquired Johnson Jw-10 needs Carb Rebuild at least

[Michael Gehrling]

Good day,

Just acquired a Johnson JW-10 (Actual Model and Serial number JWW100 & 1202121) with a carburetor that leaks fuel. I am looking for links to repair manuals and

videos on this carb rebuild.  Trying to collect all information I can before I take her apart. Suggestions for a new AOMC member is appreciated.

Mike

[crosbyman]

simple standard carb  …leaks are usually  related to   float…..  inlet needle….  gaskets….  and packing on the needle (lower one)

http://www.outboard-boat-motor-repair.com/Evinrude%203%20HP%20Lightwin%20Outboard%20Boat%20Motor/Evinrude%20Johnson%203%20HP%201952-1967%20Carburetor%20Tune-UP.htm

http://www.leeroysramblings.com/OB%20carburetor_repairs.html

1952-54-Evinrude-Lightwin-3-Owners-Manual.pdf (aomci.org)

 

great motors btw… check compression ….the head gasket sometimes blows in the mid section.

 

 

 

Joining AOMCI has priviledges 🙂

[Michael Gehrling]

Crosbyman,

Thank you for the information.  Looking forward to getting her running !!

Mike

 

[frankr]

It is almost a guarantee that it needs new coils.  Unless they have already been replaced.

[crosbyman]

what to expect under the flywheel … nothing  complex or serious after you do a few 🙂   change condensers and  the plug wires and boots   replace impeller to !!

Joining AOMCI has priviledges 🙂

[Michael Gehrling]

Partially took the carb apart and found that the needle controlled by the float needed a little coaxing.  After putting her back together, got her running on two pulls.  My outboard water test tank sprung a bad leak so I quickly closed up shop for the day.  Once I get to a reliable tank I will try to run her for awhile and do some fine tuning as needed.  If I do need to go further the coils will most likely be in her future.

 

Thank you,

Mike

[seakaye12]

Well maybe it was serviced at some point and the ignition was done.  The lower unit on that JW looks brand new!  So clean compared to the cowling .  Do you think that the lower part has been re-painted?

 

[crosbyman]

they get hot running in a tub…to many  bubbles  generated from the prop……………… so run it slow and keep an eye on the  temperature !

install the little pull down spring on the needle…!

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