Linkage Adjustment - How to Link & Sync a Yamaha Outboard 40hp 2 stroke

This video covers how to adjust the linkage on my Yamaha TLRT outboard. This is also commonly referred to as a link and sync. I'll cover the timing and throttle linkage, the CDI (Capacitive Discharge Ignition) ignition timing adjustments, the throttle cable adjustments as well as the basic carburetor adjustments.

This outboard motor is a 2 stroke and us currently mounted on the 1966 Boston Whaler 13 that I recently finished restoring. I'll be doing a few videos on this engine in the near future.

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A Quick disclaimer, I am not an outboard technician. I do however do my homework and consult with experts when necessary before doing much of the work I do on outboards. Last of all, I get a service manual on the outboards I work on and a thoroughly familiarize myself on the area I am going to work on.

00:00 Introduction
00:24 Idle Timing Stop
03:02 Idle Timing Adjustment
04:35 Full Throttle Advanced Timing Adjustment
07:38 Full Throttle Stop Adjustment
09:15 Throttle Cable Adjustment
11:01 Carburetor Synchronization
12:03 Carburetor Idle Fuel Mix
13:00 Idle Speed Adjustment

#outboard
#linkandSync
#YamahaOutboard

[roblofthouse]

Bro, this video has saved my sanity. Went through all the processes on my 50 (same as 40) and just had to adjust mix screws on the lower carbs to eliminate lean sneeze. Now she purrs like a kitten.... Thank you all the way from Australia

[stitchesInmywhoa]

You just saved me from buying a new $600 cdi unit that a mechanic told me I would need! Turns out all I needed was an adjustment. Everything was severely out of sync! Thank you so much!!!

[bremarashford]

Really good. I have the manuals and I have had the engine for few years. Just had some misfire or backfire issues and dying on idle. Watch your video then cleaned the carbs which I’ve done before and then set up the carburettor using your Link sync YouTube video. Your videos answered all the outstanding questions I had even though I’ve got the Yamaha workshop manual absolutely brilliant really appreciated it. Clear and detailed instructions I really can’t thank you enough. For now the engine is back to running perfectly

[roncaptain]

Hi Jose..Still watching your videos... Just fixed my 1984 Yamaha 40 .. By watching your videos.. Ron.

[michaelosmon]

5:30 it was at this point that I stopped the video and gave this a shot on my 90 and let me tell you sir you made my day actually my weekend. I haven't even finished the video yet but I'm about to.

It took me a little messing around to get it smoothed out but when I first started it it was backfiring. I see now some of these connectors are cracking so I need to get new ones. But thanks to you I know what I did to make this happen and how to correct the problem.

I appreciate you. Thank you for sharing your skills knowledge and experience

[ianmercer]

Joe your vid’s are awesome. I’m a green home with mechanics but watching your vids I have completed Carbi cleans and now completed the timing through this vid.

[andyevenson]

This video and your carburetor cleaning video have been incredibly helpful to me in my DIY attempt to save some green. You're the best at clearly showing and explaining the details of how and why and walked me through the process very well...Thank You so much.

[danielread]

Thank you so much!!! Did not even need the manual, started first time, ran ok a few more small adjustments and all good.

[andrewfabris]

Thanks for showing the procedure on the carbys it will be a big help 👍 cheers

[crispernator]

Forgot to say your tuning videos have been a great help to me thanks for doing them, i cant even find out what year this thing really is when it was made they didnt record manufacturing years 87 -92 somewhere in there i think .

[nickolaspeden]

This is a great video. Helped me out a lot. I have a 50 and seems to be the same. Thanks for this videos!

[ollyit]

top video mate, many thanks, from the UK -

[jamesbond]

i have a 60 2 stroke seems to be the same setup more or less, thanks for the video nice job very help full

[alexandertherrien]

Thanks, this helps alot, I have a 50hp.2 stroke feels like 3500rpm is lower than max rpm thought it was 5500

[shannonwall]

Please keep up the videos as they are such a great help and very well explained mate.. Great job.!!!

[stancheslock]

Excellent video. Followed steps for my 40 tlr. Runs much better. Thx

[theluckystrike]

Thanks a bunch I’ve been looking for this entire procedure 👍🏻👍🏻

[crispernator]

Gday mate well have made a new throttle bracket foot and it wont break, it works well possibly even better than the original, as for the timing marks they all seem to line up after a small adjustment full throttle and idle on spec tommorow i do the sync on the carbs i played the video on the stop a few times to make sure i knew where it was and how to adjust it properly looking at a friday fire up hope it goes well and ive put it back together correctly .

[rafetamc]

Hello, very good videos and very well explained, thank you.
I have a question.
On a 50Cv 2T autolube engine, what would be the measurements of the CDI and air/mixture screws, etc. of the carburetors? I would be very grateful for any advice. A greeting from Spain.

[joshdouglas]

Hey great video helped out allot, I’ve got a 50pro Yamaha having a hard time finding specs on this thing. Would my idle fuel control be the same as the 40 at 1 1/2 turns?