Question about 2007 Gas Gas EC 300

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Static Timing Does anyone know how to set the static timing on the 2 stroke gas gas (05 EC300)? I can't find any reference marks on the engine

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  • Anonymous Mar 30, 2014

    anybody got any clue how to set the timing up on my 2002 fse 400 gas gas just done rebuild and cant find bottom timing mark please help


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Or the stator backing plate. Reply With QuoteIf you have the larger 2K-3 ignition the stator has an insert with a single hole in one of the slots to fix the timing. This can be seen in the photo I posted in the DC conversion thread. If you have a 2K-2 the M5 holes in the cases for the 2K-3 will be unused. The upper hole will be visible. If an M5 cap screw and 12mm OD flat washer is snugged down in this hole, the stator plate can then be rotated until it contacts the edge of the washer. The 2K-2stator plate bolts should then be just off center in the slots. This works out well on the 250 and I think the timing for the 300 is the same.,,,

Posted on Nov 10, 2008

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My 05 yz 85 is going in reverse. The stater and ECU is YZ 80. Everyone say is timing. Should I replace stated and ECU with 05 parts. Second motor I bolt that has done this.

Hi Montrell, your ignition timing is not set properly and I am sorry you can't find the first and best tool you ever bought for your Bajaj but despair not for a mere $10 you can download another one. For more information about your issue, please visit the websites below. Good luck and have a nice day.
2 stroke engine running backwards
Runs Backwards Yamaha 2 Stroke
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Nov 16, 2015 | Motorcycles

1 Answer

Honda 1982 XL 125 R. When timing marks line up, why won't the electric timing mark rotate far enough to line up?

The electric timing mark as you call it is activated when the engine is running it shows the advance timing as the engine speed increases.

Many older bikes had a T mark and an F mark on the flywheel. T = Top Dead Center, F = firing mark. I had one of these in the early '80's, from what I remember you have to set up the flywheel to T, the cam wheel to its marker on the cylinder head. then you have to make sure the piston is on the firing stroke both tappets closed.

Also you need to make sure the cam chain tensioner is free as this will make the chain pull back. Once you have everything in the correct position and you are at the correct point in the 4 stroke cycle the engine should start. Good luck

Jun 30, 2015 | Honda Motorcycles

1 Answer

I need to know the oil gas mixture for a 2000 yamaha pw90. I couldn't find my make and model so I just choose one so please ignor. It wouldn't let me continue without picking one.

If your model is the 90 then it should be a 4 stroke engine you put 10w30 or 10w40 oil in the engine and gas in the tank. Do not mix oil into the gas tank on a 4 stroker you will knacker the engine big time.

If however you have a definite 2 stroke model, you have 2 oil tanks one for the gearbox, and the plastic one under the seat for the engine.

Gearbox tank fill with 10w30 oil the plastic tank under the seat with 2 stroke oil. The 2 stroker mixes the oil and gas so you don't need to.

Jul 04, 2011 | Power Baghira Street Moto Motorcycles

1 Answer

My 2 stroke pump has stopped working, while i get a new one does anyone know the feul oil ratio so i can keep using it pre mixed in the tank. please help thankyou

The standard mix is 32 to1. That is 4 ounces of two stroke engine oil per gallon of gas. Do not use motor oil in the gas. Please rate my answer. Thanks.

Apr 03, 2011 | 1994 Cagiva Mito 125 Evoluzione

1 Answer

2000 roadking efi we are changing over to gear driven cams we have the work done now we cannot seem to get the timing to go right we have the marks all line up but i guess we are not finding the true...

You have two "timings" to set on your Twin cam. The cams must be correctly timed to each other and then the combination must be timed to the pinion gear that drives the cams.

Now, Twin Cam engines are NOT my expertise but in all other Harley engines, the timing mark that you time the cam with has nothing to do with top dead center position of the crankshaft. There is a specific mark on the pinion gear that the cam has to be timed to or the timing will be incorrect. Knowing the way Harley does things, the same is true with the TC engine.

Good Luck

Oct 02, 2010 | Harley Davidson FLHR-FLHRI Road king...

1 Answer

I'm helping a guy who rebuilt a 1983 sportster, th...

As strange as it sounds, the TDC mark on the crank has nothing to do with the cam timing on a Harley engine, neither the Sporty nor the Big Twin. Disregard the timing marks on the crank except for ignition timing.

To time the cams, start with the pinion gear. The timing marks on the gear and the end of the crankshaft must be aligned. Then install cam #1 and #3 so that their marks align with the marks on the #2 cam. The marks on the #2 cam must also align with marks on the pinion gear. So on the # 2 cam, you have three sets of marks that must align. Once you get these, align the #4 cam. The idler gear and generator gear do not have marks. On the '83 model, there is no timing marks on the oil pump either.

Now with the cams aligned, make sure you adjust your valves to zero backlash but you'll still be able to turn the pushrods with your fingers.

On the ignition timing, bring the front piston to TDC on the compression stroke. Now, bump the engine backwards until the piston is about half way down the bore. Check this using a common plastic drinking straw in the spark plug hole. Now, bump the engine in the direction of rotation until you see the first mark. This is the advance timing mark for the front cylinder. Continue to bump the engine in the direction of rotation. You may see another mark at the front cylinder retarded timing position. Then continue to bump the engine in the direction of rotation until you see the TDC mark and the piston is at TDC. Time you engine to the advanced front cylinder timing mark.

If you have anymore questions, contact me directly at wd4ity at I'll scan a picture for you.

Good Luck

May 15, 2010 | Motorcycles

1 Answer

Put a new piston in and when i went to put the timing back together i don't know where to put the markings at.

This is not hard but will take some patience to fix it. When the piston is at the top it is called top dead center or TDC. The trick is to get the spark at just a hair after TDC.
Here comes the trick. 4 Stroke engines require two trips to TDC to get one spark. 2 stroke engines get a spark every trip to TDC.
First. Figure out if you 2 or 4 strokes.
Second Adjust timing so it fires just a hair after TDC
Let me know if you need more info and model of bike

Apr 04, 2010 | 2005 Suzuki RM-Z 450

1 Answer

Gas gas ec300 vibration

It is normal for a gas gas 300 to vibrate when you rev it its only if there is some metallic sounfds would i be worried.

Sep 10, 2009 | 2006 Gas Gas EC 300

3 Answers

I need oil for yamaha tri-moto 175

If the motor is a two stroke, (and i am sure that it is), you need to stop riding until you fill the tank with TWO STROKE ENGINE OIL . Riding without oil will quickly cause the engine to seize up. If not using an automatic oil pump, then mix the gas and oil 32 to 1. That equals 4 ounces of TWO STROKE ENGINE OIL to one gallon of gas. NEVER use motor oil in the gas. Only two stroke engine oil.

Use 10w40 motor oil in the gear box. Don't use any synthetic oils, oil marked "EC", or oil with "special" additives. Stick with the major brands; Pennzoil, Quaker State, Mobil or Shell.

A “very helpful” rating for this answer? Thanks! < < And it doesn't cost anything extra!

Jun 18, 2009 | 2005 Yamaha Royal Star Tour Deluxe

1 Answer

Fitting cam chain after replacing piston/rings.

Here's the deal > the chain position on the crankshaft cog makes no difference. No timing is done on that end. The timing is done when mounting the chain on the OHC. Run the piston up to TDC. Put the cam in a position where the cam lobes are pointing downward. Look at the cam gear. There should be two marks on one side of the gear. You should be able to see the marks from the left side of the engine. The cam is in time when the marks are parallel with the top gasket surface of the head and the gear is bolted to the cam. Now you have TDC compression stroke (good). If the cam lobes were pointing upward you would have TDC exhaust stroke (bad). Just to help you a bit in the future, I have a web site below where you can see a parts fitch for your specific bike.

You will select the actual brand, year, model, etc., once you go to the site. Part numbers and prices are also shown. You can order parts from this site. In the event no price is shown on a particular part, the part is not in stock.

Post a comment if you need to get back to me.
Please top rate this solution. Thanks!

Jun 06, 2009 | 2002 Honda XR 200

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