How to set the timing on a mercury outboard motor

Looking to know how to adjust timing on a 115 hp mercury outboard 6 cylinders serial number is NNN NNN-NNNNpossibly get diagrams sent to me as well. With engine running set the scan tool or Marine Diagnostic Code Tool to the SERVICE MODE and follow manufacturers instructions.

My flywheel has multiple dots.

How to set the timing on a mercury outboard motor. Adjust the ignition timing. Shift into neutral and start the engine while holding the throttle arm. Adjust the idle timing screw so that it is 2 degrees before top dead center.

Turn off the engine. Start the engine again following the same steps as in the beginning making sure youre in neutral. Attach your dial indicator to the flywheel.

You must have a dial indicator in order to properly adjust the timing. The dial indicator should be attached to the first spark plug hole. Turn the dial indicator to the 0 position in order to lock it into place.

Turn the flywheel counterclockwise until the dial indicator reads 550. Shift your outboard into neutral hold the throttle arm in idle and start up your engine. Be certain to make note of the timing marks as you do this.

How do I read my flywheel and other timing questionsFish The timing marks left of zero is BTDC. Remove all spark plugs except 1 and install these right into their plug wires and also ground them to the block. Now you can crank the motor to collection the timing and also it will not start.

As the timing is just passing TDC the 1st minorthrottle pickup should hit and start to open the carbs. Use the timing light. Adjust the tang or trigger screw to make this a reality.

All of them are speced different but if the 1st pickup hits at 3-4 degrees BTDC advance - you win. The max timing set with the motor at wide open throttle is 36 degrees. First you set the max timing- motor running flat out- preferably on the boat.

If no one has ever messed with the max timing or changed ignition parts then it really never needs to be re-adjusted- in fact- on my 15 the screw is coated with a wax seal and its never been. I have a 1957 mark 55-E outboard. The question I have is this there are two timing marks on the flywheel one is a 0 with a line under it The other is just a line the one with just a line is top dead center on 1 piston.

The one with the o is about 250 before top dead center. What line do I use to time the engine by the belt to the arrow on the. How to set timing on a Mercury 1984 45 hp outboard motor Mechanics Assistant.

Sometimes boat issues seem like theyll be really complicated but end up being easy to fix. The Marine Mechanic Im going to connect you with knows all the tricks and shortcuts. Setting the timing is part of the TimingSychronizingAdjusting procedures in the shop manual.

After setting up the linkages per the manual initial adjustment of the timing is completed using the trigger link rod. Have to snap one end of the link rod sockets off the ball mount then turn. Mark 28-28A Merc 100-150-200-250.

Merc 350 2 Cyl Mark 55-55E. Merc 200 Full Gear Shift. Merc 900-1000 Starting with 1965.

Merc 600-700 Direct Reversing. Then set the outboard idle mixture screw 14 turn out counter clockwise from the lean out position. This adjustment should result in a true approximate setting.

A setting that is to lean will cause hard starting on a cold engine. In fact the main reason for hard starting on a cold engine is a result of a lean setting. How to Set Ignition Timing.

Setting 2-stroke ignition timing is fairly simple. The majority of classic 2-strokes have ignition systems that fall into one of two types. Contact points inside a flywheel magneto Villiers and early Japanese engines and external contact points mounted on an adjustable plate with an internal flywheel.

We need to change the timing belt on a mercury 40 horse 4 stroke engine. And would like to know how to line up the cam - Answered by a verified Marine Mechanic. We use cookies to give you the best possible experience on our website.

Recently bought a used Merc 15hp outboard motor. In this video we look at how to set timing on an outboard motor using a timing light. Well look at using timing marks top dead center and the light to get good ignition timing at idle.

Hello - I am trying to set the timing on my 1981 mercury 2 cycle 2 cylinder outboard. My manual makes reference to lining up the 2 dots on the flywheel with the timing marker. My flywheel has multiple dots.

I am not sure which dots to line up on the timing mark. I do have pictures of my flywheel with the dotsnumbersmarks if that would help. Looking to know how to adjust timing on a 115 hp mercury outboard 6 cylinders serial number is NNN NNN-NNNNpossibly get diagrams sent to me as well.

Vocational Technical or Trade Scho. Mercury outboard motors are leading in the industry and win almost all the speed tests winning the hearts of water motors. Being a leader is the philosophy of Mercury Marine.

Each Mercury boat engine is a combination of speed power and the highest quality. In this video we go through a complete service of a two stroke outboard. This includesRemoving and inspecting the spark plugsPerforming a compression testIn.

Before starting engine make sure the timing tab and mark or marks on crankshaft damper are clean. Chalk or white paint on timing marks may help visibility. If NOT Using MerCruiser Timing Tool.

With engine running set the scan tool or Marine Diagnostic Code Tool to the SERVICE MODE and follow manufacturers instructions.