HELP! Johnson 9.5 Idle Issues - pictures!

jhohanshelt

Cadet
Joined
Jul 22, 2012
Messages
27
I cannot seem to get my 71' Johnson 9.5 to idle. I've cleaned the carb 4 times, cleaned fuel filter, changed all fuel lines (including new external lines and bulb to my tank), changed plugs, and tested all the components under the flywheel. The lean/rich knob on the motor seems to help minimal from what I can tell. The motor will run much BETTER with the cowling left ON the motor when running. I have posted a few pictures here to help me understand how the throttle adjustments should be made... (FYI : all tests have been made in a test tank, not on the boat in the water)

Here is my armature plate. Do my captions illustrate the correct action my motor will take if the cam follower is at these certain positions? Also, when I have to adjust the throttle lever after I clean my carb, do I need to set the cam at the timing mark shown here when I snug the screw on the throttle lever in place?? I just want to make sure I get the basics here so I have a starting point to when I can get the darn thing to idle.

6g8xav.jpg


I also noticed there was some "oily" substance here on a part of the motor underneath the magneto plate where the spark plug wires come out (left side under flywheel when facing front of motor). What part of the motor is this? Would this be the factor contributing to my idle issue?

9ptfv6.jpg


Any info. would be greatly appreciated.

Thanks!
 

Daviet

Fleet Admiral
Joined
Sep 24, 2008
Messages
8,958
Re: HELP! Johnson 9.5 Idle Issues - pictures!

The roller for the carb linkage should be adjusted to start moving the linkage when the roller is on the mark.
Are you sure that it is oil you are seeing or could it be a sealer used on the crankcase halves?
 

jhohanshelt

Cadet
Joined
Jul 22, 2012
Messages
27
Re: HELP! Johnson 9.5 Idle Issues - pictures!

The roller for the carb linkage should be adjusted to start moving the linkage when the roller is on the mark.
Are you sure that it is oil you are seeing or could it be a sealer used on the crankcase halves?

The substance is wet or fresh to the touch... That is the seal for the crankcase halves?
 
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