Johnson outboard timing adjustment

To set the timing on that engine, have the s/plugs out, and have the throttle at full, set that timer base under the flywheel tight against the rubber stop on the end of the …

Jun 17, 2012 · Jun 17, 2012. #2. Re: Throttle Cam Adjustment. The rod length is determined by what is known as "pickup timing". Ignition Timing should be TDC when the cam contacts the roller. If is is not....then adjust the rod length. Also, be sure you adjust the roller to contact the cam at the lower mark. This is adjusted by loosening the screw on the ... Jun 10, 2021 · It's This Old Outboard. 2000 Johnson 25 Hp Outboard. You may remember this old outboard. Worse case of outboard abuse I've ever seen! Well She needed some at... Jul 4, 2017 · 07-04-2017, 09:20 AM. The 5 degree idle timing is set as follows: Set the throttle so that the scribe mark on the metal cam is aligned dead center with the center of the throttle roller. It is at that setting that the idle timing should read 5 degrees. If not... the adjustment is made via the linkage rod that connects from the vertical throttle ... TIMING, SYNCHRONIZING & ADJUSTING 90-877837 NOVEMBER 1999 Page 2C-13 Static Maximum Timing Adjustment (Cranking Engine with Starter) NOTE: WHITE/BLACK lead and ECM harness remain disconnected for maximum timing adjustment. Timing light remains hooked up to no.1 cylinder. 1. Hold throttle arm so that maximum spark advance …Here is a pic the 2 orange dot must touch when you advance the throttle with the control. To get the engine out of quick start disconnect the white/black wire and ground the white/black coming from the power pack. This will put the engine into normal operation. To disable the slow mode just disconnect the tan wire.1988 50hp force adjusting timing: 3: 1977 Johnson 75HP Outboard How Do I Set The Timing: 2: Timing: 1: 1955 mercury 18 hp mark 25 point setting: 1: Timing a 77 50050 merc: 2: PhaseMaker breaker gap: 2: 1982 70hp 3cyl ignition timing Help: 1: Coolant water eject point: 4: B95 125 Timing question : 2: 1963 merc 110 Points: 4: Timing on 81 40 hp ...May 14, 2019 ... 9:03 · Go to channel · Idle Speed Timing Adjust 9.5 & 10 HP Johnson & Evinrude. T-Mikes Vintage Outboards Restoration•3.3K views · 4:3...Jun 24, 2015. #10. 140 is great compression. get your timing set right and your linkage right and carbs clean and fuel flowing properly and that motor should run out strong. you may want to run 93 octane in that motor. I would not say that you have too but you would see a performance gain as well as MPG increase.

T-Mikes Ebay Store https://www.ebay.com/str/simtechfarms Mail In Repair Service https://youtu.be/gEOISADZEhs Technical Consulting https://www.ebay.com/itm/...Apr 23, 2013 · 2,765. Apr 24, 2013. #5. Re: 1999 Johnson 200 idle adjustment. Idle is set by adjusting the timing. In gear, on the water, set idle at 750 or thereabouts. As you have indicated, the butterflies must be absolutely closed. Look just under the flywheel, on the stbd side for a cigar tube shaped part of the linkage. I have a 1997 johnson 150 hp outboard with a timing problem. I was told I could time it out of the water by taking all the plugs out and grounding the water temp. sensors, hook a timing light to No. 1 …Dec 3, 2011. #2. Re: 40 hp evinrude carb settings. The way the service manual says. It is called "link & sync" if you start from scratch. If the throttle linkage, timing advance, and carb settings are not done in the proper sequence you end up chasing yourself. This is a multi-page procedure and far too detailed to go into here.Gold Medal Contributor. Mar 8, 2024. #8. On a motor in good condition the maximum timing advance is set at 28.----Actual timing at idle DOES NOT matter.-----Throttle plate opening is around 4 degrees.----Make sure you understand and get this correct.-----Big $$$ damage can result if not set up correctly. R.We have compiled some of his Carburetor adjustment posts here. Initial setting is: Slow speed = seat gently, then open 1-1/2 turns. Start engine and set the rpms to where it just stays running. In segments of 1/8 turns, start to turn the S/S needle valve in. Wait a few seconds for the engine to respond.Jun 8, 2011. #6. Re: 6 hp Evinrude setting points/timing question. Tim Frank said: Just replaced all ignition components on a '75 E/rude 6 HP. My OEM manual shows a few special tools for testing and one that looks a bit like a lawn mower blade for setting the points. The principle appears to be that setting the precise opening spot will give ...The pointer is called a timing fixture but it is really a tool to adjust the ignition to fire as close as possible to 180 degrees apart. Any kind of a tool would work as long as it was straight and fasten to the crankshaft If you set one set of points you could put the pointer between the marks. ... Maybe then I could afford a few more ...

May 14, 2019 ... 9:03 · Go to channel · Idle Speed Timing Adjust 9.5 & 10 HP Johnson & Evinrude. T-Mikes Vintage Outboards Restoration•3.3K views · 4:3...28,762. Mar 22, 2007. #6. Re: Evinrude 48 spl (1989) ignition timing. Have you checked the flywheel to make sure the key has not sheared or partially sheared. The key locates the flywheel in the proper relationship to the crankshaft and hence timing cannot get drastically out of spec unless someone has messed with the advance linkage.Jul 12, 2021. #1. 1993 40 hp tracker while doing a link n sync I measured the spark linkage and its 2" 13/16". I just watched a link and sync video on the same engine where they say the base timing is supposed to be 2" 1/16". i know it would need to be adjusted after base timing adjustment. haven't been able to get this motor to stay running ...To set the timing on that engine, have the s/plugs out, and have the throttle at full, set that timer base under the flywheel tight against the rubber stop on the end of the full spark timer advance stop screw (wire it against that stop if necessary). Rig up a spark tester on the #1 cylinder plug wire. Hook up the timing light to the #1 plug wire.

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Your engine is a 1969 25hp Johnson.<br /><br />The timing of the engine is automatic and determined by the alignment of the crankshaft key with the slot in the flywheel. As long as the key is not sheared, the engine is in time.<br /><br />The points set to .020 on the high lobe of the cam. If the cam has a small section market set, have the ...Step 3: Pickup of the throttle. Wait for the throttle to advance. As the timing passes the TDC, the first minor pickup will hit and start, opening the carbs. The timing light needs to be utilized to adjust the trigger screw. Let the throttle advance continuously. This will open up the carbs slowly a bit more.Jun 24, 2015. #10. 140 is great compression. get your timing set right and your linkage right and carbs clean and fuel flowing properly and that motor should run out strong. you may want to run 93 octane in that motor. I would not say that you have too but you would see a performance gain as well as MPG increase.Re: 1995 Johnson 200HP carb adjustment. You adjust the timing by gauging how far the timer base moves. The timer base sets under the flywheel and an arm that protrudes out on the starboard side and is connected to the throttle lever by a link rod. The upper screw (what you called the trigger screw) is the timing adjustment screw.Jun 12, 2015 · Jun 24, 2015. #10. 140 is great compression. get your timing set right and your linkage right and carbs clean and fuel flowing properly and that motor should run out strong. you may want to run 93 octane in that motor. I would not say that you have too but you would see a performance gain as well as MPG increase. #1. I am working on a 1995 50 HP 3 cylinder Johnson outboard. Initially the motor was not firing on the 3rd cylinder. The motor would get up on step and drop rpm and then it would kick in again. Very sporatic. There is good compression in all 3 cylinders. All 3 ignition coils are working. I changed out the timer base.

Johnson & Evinrude Outboards . 40 HP, 96' Timing adjustment is maxed out, but not enough advance ... I was checking and adjusting the timing on my 1996 Evinrude 40HP outboard, Model: E40TELEDS. The adjustment link is "pulled in" to the maximum, and minimum position screw is all the way in. During normal idle, mark is at -2 …In today’s digital age, most of us spend countless hours in front of computer screens. Whether for work or leisure, prolonged screen time can take a toll on our eyes. One way to mi...Re: Setting the timing advance at full throttle You may indeed blow up the motor and it proves nothing.-----Timing on outboard motors generally does not go out of adjustment.-----Why do you feel you need to check / adjust it.-----My best advice !---Find a dealer with a test prop or big test tank to check this for you.Aug 12, 2010 · To set the timing on that engine, have the s/plugs out, and have the throttle at full, set that timer base under the flywheel tight against the rubber stop on the end of the full spark timer advance stop screw (wire it against that stop if necessary). Rig a spark tester and have the gap set to 7/16". Hook up the timing light to the #1 plug wire. Aug 9, 2018 · Here is a pic the 2 orange dot must touch when you advance the throttle with the control. To get the engine out of quick start disconnect the white/black wire and ground the white/black coming from the power pack. This will put the engine into normal operation. To disable the slow mode just disconnect the tan wire. 2,765. Apr 24, 2013. #5. Re: 1999 Johnson 200 idle adjustment. Idle is set by adjusting the timing. In gear, on the water, set idle at 750 or thereabouts. As you have indicated, the butterflies must be absolutely closed. Look just under the flywheel, on the stbd side for a cigar tube shaped part of the linkage.Oct 12, 2020 ... Comments43 ; Using a timing light to set outboard ignition. Dangar Marine · 209K views ; 1994 Johnson 60 HP With Serious Timing Issues. Brandon's ....New Thermostat, Relief Valve Grommet and Gasket. Meanwhile I did the Joe Reeves WOT Timing Procedure on the 1987 40 Hp Evinrude Outboard. I knew it was off because the Stop Screw was loose when...Hi. I have a 1985 Johnson 100 hp commercial outboard. The model number is J100WMLCOC. I cannot find the wot timing spec anywhere. I have looked many times on the net and here with no luck. What I am seeing is cranking at wot with the timer base rubber stop hitting it's stop is 21 degrees. Of course at wot this should equate to 25 degrees.T-Mikes Ebay Store https://www.ebay.com/str/simtechfarms Mail In Repair Service https://youtu.be/gEOISADZEhs Technical Consulting https://www.ebay.com/itm/...

Operate the engine at idle with the shifter in the "Forward" gear position. Note the engine speed shown on the shop tachometer; the engine should idle between 725 rpm and 775 rpm. The ideal idle is somewhere near the midpoint of this range, about 750 rpm. Loosen the lock nut on the idle speed adjustment screw with a small adjustable wrench.

Johnson & Evinrude Outboards . Johnson 115 60? V4 Timing. Thread starter bjcsc; Start date Jun 27, 2015; bjcsc Lieutenant Commander. Joined Jun 1, 2006 ... To adjust the timing, we loosened the screw circled in red and left it loose until both idle and WOT were adjusted. We restarted the engine and let it run while we hooked up the ...Oct 19, 2012. #3. Re: How to adjust "idle" on my 115 johnson. Banner, I believe your motor's idle speed is set by idle timing. First check to see that the throttle cable closes the carbs all the way. If so, get a Service manual and double check idle and max timing. BTW - I once found a piece of wire from the voltage regulator was holding the ...Aug 25, 2017. #7. When the lever is in neutral and the throttle mechanism is not pulled tight against the idle screw. You need to adjust the cable on the motor. You are only concerned about the lower screw at idle. The upper screw is only the WOT stop for the carbs. Your idle should be about 1000-1200 rpm on muffs.Jul 25, 2008. Messages. 313. Nov 17, 2010. #4. Re: 1988 88hp SPL Johnson Throttle cable adjustment. If your throttle cable was smooth before you rebuilt the carbs and now the cable has alot of resistance, the cable is binding or the carb linkage rods are in the wrong place or maybe upsidedown. B.Oct 6, 2015 ... Classic OMC Outboard Motor Tune Up #16 Magneto Install and Timing ... 1986 Johnson 9.9 Cam roller adjustment ... 1972 Johnson 4hp Outboard Water ...Jun 20, 2019 · New member. Jun 20, 2019. #1. I’ve had some issues with my ‘87 70hp JOHNSON wanting to cut out in gear at a low trolling speed. I rebuilt the carburetors this year. It will idle fine in neutral, pick up and run at full throttle and hold itself when brought back into neutral. I tried increasing the idle with the idle stop screw, which didn ... Put a timing light on #1, and place the timing linkage in idle position. Crank the engine, and note the reading. Should be around 4*ATDC. While the engine is cranking, move the linkage manually, watching the timing move using the timing light. It will move on the flywheel toward that 18* mark.The "up" flat adjustment is simple - level with (or 1-2 degrees above, with carb upsidedown) the carb body surface. Here's a page from my 82 manual, which I THINK will hold over for your 79: View attachment 15478. The measurement "3" should be 1-1/8 - 1-1/2". This is of course with the carb in the upright position.16,978. Aug 19, 2008. #2. Re: Idle RPM Adjustment on 200hp Johnson. The idle needs to be about 700 in gear. 650 would be better. Once all the linkages are set and everything is where it's supposed to be (including the throttle shaft connectors under each middle throttle body) the idle can be adjusted by either advancing or retarding the idle ...

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1 - The adjustable screw on the vertical throttle arm. This sets the idle rpm. 2 - The screw with the black rubber bumper that stops the timer base. This is the full spark advance stop which sets the timing so that it can advance no further. NOTE: If your engine has the "Fast Start" feature", you must disconnect/eliminate that feature in order ...3. Jun 21, 2017. #1. I recently purchased a lake home that came with a 1990 24 ft. Suncruiser pontoon with a Johnson 90 hp V4. The boat was hard to start from sitting a couple of years but once it got going it would run pretty good. Idle was low and would stall going into gear.Feb 22, 2008. Messages. 7,174. Sep 25, 2009. #4. Re: Johnson OIS 2000 Questions. disconnect the port temperature switch/sensor leads and use a jumper wire to short the tan temperature sensor wire to engine ground. Once you have verified the timing pointer using a piston stop tool (or a dial indicator), connect all spark plug wires to a …Your engine is a 1969 25hp Johnson.<br /><br />The timing of the engine is automatic and determined by the alignment of the crankshaft key with the slot in the flywheel. As long as the key is not sheared, the engine is in time.<br /><br />The points set to .020 on the high lobe of the cam. If the cam has a small section market set, have the ...We have compiled some of his Carburetor adjustment posts here. Initial setting is: Slow speed = seat gently, then open 1-1/2 turns. Start engine and set the rpms to where it just stays running. In segments of 1/8 turns, start to turn the S/S needle valve in. Wait a few seconds for the engine to respond.Dec 17, 2009. Messages. 2,454. Dec 11, 2011. #2. Re: WOT Timing Procedure Evinrude V4 115 SPL 1998. 1998 ought to be an OIS ignition system which is normally set with a special tool: Ignition analyzer, with engine not running. It may be set with a timing light. Give full throttle, remove all spark plugs and hook up a spark tester or …Along with changing the water pump and impeller on a regular basis, sometimes the timing on the motor needs to be adjusted too. The timing is set by adjusting the link rods inside the engine. Setting the timing on the Johnson outboard should take around an hour.Jul 18, 2018 ... 4:10. Go to channel · Two Stroke Outboard Shaking - easy carburetor linkage sync check and adjustment. Hello Everyone•445K views · 1:59. Go to ....May 17, 2005. Messages. 2. May 20, 2005. #1. I just re-built the carbs and need to set up engine to factory specs.<br /><br />What is the idle speed timing spec. for a 1973 Johnson 50 hp outboard. My manual gives only the WOT timing at 19 deg. No spec for idle timing. The factory settings were tampered with by "others" and later by me because ...View and Download Johnson 2 Stroke 40 HORSEPOWER operator's manual online. 2 Stroke, R, RL. 2 Stroke 40 HORSEPOWER outboard motor pdf manual download.Jun 24, 2015. #10. 140 is great compression. get your timing set right and your linkage right and carbs clean and fuel flowing properly and that motor should run out strong. you may want to run 93 octane in that motor. I would not say that you have too but you would see a performance gain as well as MPG increase. ….

My manual calls for 30 +-1 degrees, therefore, I re-set the timing using the Joe Reeves method from the 30 I was reading, to 27 degrees (Joe Reeves calls for -4 …Update 4/8/2021 - I also want to stress the importance of setting the carb floats correctly.This video shows a simple way to check your outboard carburetor l...Johnson & Evinrude Outboards . 1976 25hp johnson points and timing. Thread ... 1976 25hp johnson points and timing I have no idea what you're speaking of ie.... one magneto, two magneto..... align the coils and set the points as follows. ... Adjust the gap so that a .020 gauge will pass thru but a .022 will not. Should there be any ...966. Feb 27, 2014. #5. Re: 1976-77 55hp evinrude adjustments. Joe is a Saint to provide all that info. A Factory service is more in the order of a few hundred pages, not close to 700. Looking briefly, there is a 1977 55hp Factory service manual on ebay now for $30 delivered. You didn't specify your exact year.244. Aug 20, 2013. #3. Re: Timing Johnson 150 -- Trouble disabling QuickStart. You are referring to the Joe Reese method of timing the engine at crank speed. Follow the yellow/red wire coming from the powerpack until reaching a bayonet connection and disconnect it there. That's the way my 130 is wired.4. Jul 1, 2009. #2. Re: 1976 35hp Evinrude - how do I adjust the timing. I also set the throttle stop screw so the roller from the carb linkage is in the middle of the 2 dots on the timing advance plate at idle. C.Apr 7, 2020. #1. Well I just checked the timing on my johnson 140 and in forward idle it’s supposed to be 4-6 degrees “throttle pickup”. I was at 16!! It was warmed up and in a tub of water. When I moved the timer base rubber stop forward till it hit, I was getting 4 degrees.Dec 3, 2011. #2. Re: 40 hp evinrude carb settings. The way the service manual says. It is called "link & sync" if you start from scratch. If the throttle linkage, timing advance, and carb settings are not done in the proper sequence you end up chasing yourself. This is a multi-page procedure and far too detailed to go into here.Then push the magneto control arm all the way until it hits the full advance stop. Look up underneath the edge of the flywheel and see if mark "a" on the flywheel is lined up with mark "b" on the timing plate base. That is full advanced. I don't see how your timing could be off if you never touched it. Jason2tpa. Johnson outboard timing adjustment, 4. Jul 1, 2009. #2. Re: 1976 35hp Evinrude - how do I adjust the timing. I also set the throttle stop screw so the roller from the carb linkage is in the middle of the 2 dots on the timing advance plate at idle. C., 25602 25603 25652 25653. View and Download Evinrude 25 HP owner's/operator's manual online. 25 HP engine pdf manual download. Also for: 25602, 25603, 25652, 25653., 2000 Johnson 90Hp. R&R Spark Plugs & Fuel Filter 2001 Sea Fox 772ccTo watch the video with subtitles go to https://onboardwitheddie.com/wp-admin/post.php?pos..., Apr 19, 2023 · To fix this problem, adjust the shift linkage so that it lines up with the neutral position on the transmission. 2. Loose shift cable. If the shift cable is loose or has too much slack, this can cause problems with shifting gears. To fix this problem, adjust the cable tension so that there is no slack in the cable. , As long as the operation of the motor is fine, (idle, rpm, etc) then there is no reason to adjust the tabs. just loosen the arm and slide it to the right to contact the timing arm. Secure the screw and you are good to go, just don't over tighten the screw and risk stripping out the threads on the arm. Hi, 2004 Johnson 115 Hp (J115GLSRC) I saw ..., Step 3: Pickup of the throttle. Wait for the throttle to advance. As the timing passes the TDC, the first minor pickup will hit and start, opening the carbs. The timing light needs to be utilized to adjust the …, Jul 5, 2020 ... Hawkeye Marine Setting the timing on a 75 HP Mercury 2 stroke engine 4 cylinder. Thanks for watching! #nashville #tennessee #percypriestlake ..., Idle RPM is adjusted with the IDLE timing screw, which adjusts the timing at idle only. If you cant get the motor to idle correctly between the 0-2 atdc range then …, To set the timing on that engine, have the s/plugs out, and have the throttle at full, set that timer base under the flywheel tight against the rubber stop on the end of the full spark timer advance stop screw (wire it against that stop if necessary). Rig a spark tester and have the gap set to 7/16". Hook up the timing light to the #1 plug wire., Advanced Contributor. Jul 22, 2013. #6. You will see a thin slot in the magnet. If it is re-glued and off by maybe 2-3 widths of that slot, the timing will be way off. You may need to do a timing pointer adjustment also, after the repair, just to …, Nov 7, 2013. #4. Those motors have a history of problems with the #2 cylinder.--A compression test is a suggestion by me.-------Does the hose for the cooling indicator come off the side of the motor or off the top of the block ? 9. 10., 11,551. May 15, 2014. #2. Re: 84' johnson gt-150 timing adjustment. The factory service manual would have you verify the timing pointer at the front of the flywheel. Then mount a special wheel (prop) to run the engine up to 5000 rpm's, under load-then check the timing on #1 and #2 cyls. These details are in the factory service manual., To set the timing on that engine, have the s/plugs out, and have the throttle at full, set that timer base under the flywheel tight against the rubber stop on the end of the full spark timer advance stop screw (wire it against that stop if necessary). Rig up a spark tester on the #1 cylinder plug wire. Hook up the timing light to the #1 plug wire., 5008328. BRP Marine. TIMING ADJUSTMENTS. Timing Pointer. To prevent accidental starting while servicing, disconnect the battery cables at the battery. Twist and remove all spark plug leads. The timing pointer …, Setting the timing on the Johnson outboard should take around an hour. Items you will need. Flush attachment. Timing light. Step 1. Hook up a flushing attachment to the end of a garden hose, place it over the engine's water inlets and then turn the hose on full blast. …, The flywheel on an outboard will need to be removed when repairs are needed such as the motor not starting properly. In order to access the crankshaft of the motor the flywheel wil..., You need to warm up the engine for around 15 minutes before examining the timing light attached to the spark plug. At this point, you can inspect the reading on the timing light to determine the current timing of the engine. Depending on the model you’re running, the timing may vary., Gold Medal Contributor. Mar 26, 2015. #2. For initial start up the needle should be out 1 -1/2 turn.----It must be adjusted after that for best idle and acceleration !-------The timing on these motor does not go out of adjustment unless the flywheel key shears.-----------What is your motor doing / not doing that leads you to ask these questions ..., View and Download Johnson 2 Stroke 40 HORSEPOWER operator's manual online. 2 Stroke, R, RL. 2 Stroke 40 HORSEPOWER outboard motor pdf manual download., Status: Offline. Points: 1180. the service manual reads +4deg and -20deg which means the idle timing is 4 degrees ATDC and the high speed timing is 20 degrees BTDC, you cannot use a timing light to set the timing on those engines, you need an optical sensor ignition analyser which only a dealer will have. , Mar 21, 2007 · 28,762. Mar 22, 2007. #6. Re: Evinrude 48 spl (1989) ignition timing. Have you checked the flywheel to make sure the key has not sheared or partially sheared. The key locates the flywheel in the proper relationship to the crankshaft and hence timing cannot get drastically out of spec unless someone has messed with the advance linkage. , On my 1985 25 HP the timing instructions for the timing advance is to put boat in water,*put in gear and go full throttle and adjust timing advance link rod …, Laptop brightness is an important feature that allows users to adjust the screen’s luminosity according to their needs and environment. However, there are times when adjusting the ..., In this video I use a timing light to set the idle timing on a Yamaha 20 HP two stroke outboard motor.For outboard repair information, checkout my website: h..., 810. May 4, 2012. #2. Re: What happens if timing is off? The base timing on an engine can typically be used to adjust the idle of the engine on a two stroke. As long as the fuel system is funtioning correctly, you can vary that by several degrees and you'll know by the rpm's at idle in gear when you have it right., Johnson & Evinrude Outboards . 40 HP, 96' Timing adjustment is maxed out, but not enough advance ... I was checking and adjusting the timing on my 1996 Evinrude 40HP outboard, Model: E40TELEDS. The adjustment link is "pulled in" to the maximum, and minimum position screw is all the way in. During normal idle, mark is at -2 …, 2,765. Apr 14, 2011. #2. Re: Idle Adjustment 1987 Evinrude 225. Idle speed is changed/controlled by the ignition timing. Look on shop.evinrude.com, locate your motor, and go to the "cylinder/crankcase" page. Zoom in til you see the linkages well, and you will see reference numbers 80, 86, and 81., Status: Offline. Points: 1180. the service manual reads +4deg and -20deg which means the idle timing is 4 degrees ATDC and the high speed timing is 20 degrees BTDC, you cannot use a timing light to set the timing on those engines, you need an optical sensor ignition analyser which only a dealer will have., Jun 9, 2013. #2. Re: 9.9 Johnson Timing Plate Adjustment. If the motor is a 74-76 the throttle cam is adjusted by the two 5/16" nuts positioned, very badly, under the flywheel on the starboard side. You simply loosen those nuts and move the throttle cam forward or back. The proper position is for the mark on the throttle cam to be in the center ..., Tips to help you to adjust the idle in your outboard #boating #yamaha #outboardThis is one of the most popular tools for idle https://amzn.to/42aJXUI, Johnson & Evinrude Outboards . 73' Evinrude 25 HP (25352A) Idle Adjustment ... As far as timing, there is a mark (or 2) on the cam - when the follower roller hits the mark, the carb butterfly should just start to open. Adjust it by either loosening the cam, or by adjusting the carb linkage rod. F. F_R Supreme Mariner., To set the timing on that engine, have the s/plugs out, and have the throttle at full, set that timer base under the flywheel tight against the rubber stop on the end of the full spark timer advance stop screw (wire it against that stop if necessary). Rig up a spark tester on the #1 cylinder plug wire. Hook up the timing light to the #1 plug wire., Messages. 61. May 22, 2006. #2. Re: how to set timing 1957 johnson 7.5 hp. I don't have my manual in front of me (or my motor), but it goes something like this.<br /><br />The proper setting for the link-n-synch (timing) is such that when you twist the twist grip, the line on the cam follower (horizontal bladelike plate that pushes the cam arm ...