Idle Speed Timing Adjust 9.5 & 10 HP Johnson & Evinrude

[@michaelbonee1630]

T-Mike I’ve been an L1 Master Auto tech for almost 25 years. Not only did I score a pinion gear from you, your in depth knowledge and demonstrations are a help even to an old dog like me. You helped me resurrect a 69 Evinrude 9.5. You are the man sir.

[@bc7912]

Tmike thank you for this information My 9.5 ninja turtle Was sputtering for years Took the carb off moved the lever to 4 o’clock and its Running good!

[@robertkim5547]

Always good contents.

[@threatcom]

Great video bud. I've noticed on my 9.5 that when tightening the flag it turns the shaft to the butterfly, which is normal. One would think, the best way to adjust it would be while the carb is still on the motor by turning the throttle to where the roller is in the correct spot, move the flag to touch the roller, then tighten the flag. That does not work. While it looks correct, but it actually turns the butterfly a tiny bit when tightening the plastic screw on the flag. The TB ends up more open than it should be. This is ok for idle as it just idles a little higher. However the problem comes in on the top end. when running wide open the RPM will drop and kind of bog, without touching the throttle it'll work it's way back up in RPM in 10-15 seconds, run high RPM for 10-15 seconds then drop in RPM again. So it basically has a very inconsistent RPM at WOT. Backing the throttle down some makes it run smooth and the same high RPM without issue. I believe what's happening is the butterfly is a hair advanced at idle, at WOT this results in the motor basically flooding itself as the butterfly is open way too far for the spark timing. I could be off. But hat my theory anyway. LOL

[@TheDornado]

Hey T-Mike, I just picked up a 1956 10HP Johnson that has been sitting for 15 years. Loving your videos, but I noticed one thing in this video is a little off. According to the book, it's not the roller that should start rolling at the mark, but the actual butterfly valve should start moving at the mark. Since there is a bit of play in the linkage, the roller will actually start rolling before the mark. It's not much, maybe 1/8" but just thought you would like to know. Thanks again for all the videos and helping teach us garage mechanics!

[@leepatton1180]

That high rpm plays hell on the clutch dog

[@wackyk1dtrammel510]

Hey T-mike. I finally got my johnson to start up because of you! thank you. I'm trying to set the idle, You say a plastic post goes in between. How dose this plastic post go? Of course i didnt pay attention when i took it apart the first time! Thanks.

[@michaeljsimon]

@@wackyk1dtrammel510 kzbin.info/aero/PLmMizJOF01-BybxjXHFBKhd9UK3kplL5n&si=sYLX8DZ_bWgTjTOo

[@wackyk1dtrammel510]

@@michaeljsimon did you mean to link a certain video? Just the playlist pops up

[@jeffkrauss5582]

I got a 59 10hp I got current to my spark plug wires but not to the spark plugs I’ve moved the plug connection further up the plug wire with no success any ideas what I should do next

[@asclark0970]

Quick question Tmike, what is the difference between a 10hp s was horse and a fast twin? Other than one being a Johnson and the other being an Evinrude. Thanks for the videos.

[@michaeljsimon]

The name & the cowling is the only difference

[@asclark0970]

@@michaeljsimon thank you sir

[@RussellClaar]

I have a1957 evinrude with 42 pounds of compression is that good

[@clovm9810]

My cd-18 wont idle on the tiller handle to slow is that normal

[@larrybullock3225]

Is a 25 h jonson the same

[@michaeljsimon]

Yes

[@michaeld.7984]

Ty !! still scratching ma` butt tho` :( .. / rebuilding / tuning a 56` rude 10hp #10012 ! I Need `ur Hep of course ;) .. Timing tool / ring tool /?

[@michaeljsimon]

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[@michaeld.7984]

Lufya h Che`r Big ` cook out ~No TuTurnel !! if i don't see it )