Question about 2005 Suzuki DR-Z 125

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Timing on 125

How to set timing chain correctly to over head cam.

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Actually there is a mark to be followed . there is a mark on the over head cam , and there is a mark on the gear where you will place the chain . Now set the mark both in line together "where this are called the timing mark" then place the chain.

Posted on Aug 01, 2009

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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

Does the piston stay conected to conrod when changing head gasket...will the head come past the piston?


Yes they do. You'll probably have to hit the head with a rubber mallet a few times to loosen it up, but then it will just slips off and the pistons stay connected to the rods. You really need a shop manual for this because you'll have to take the cam chains off and then re-set the cam timing when you put it all back together. No big deal if you follow the instructions closely, but if you get it wrong you'll wreck the motor when you go to start it. Also, as long as you've got the motor apart you might consider changing the cam chains depending on how many miles the bike has on it.

Oct 29, 2014 | Motorcycles

1 Answer

Timing chain guide broke on a 2007 Chevy malibu Eco tech engine 4cylinder. I've had the head reworked, new timing chain kit, head bolts, etc. I just got the head on and set the timing. Now here's my...


First, are you rotating in the correct direction? Second, remember, timing chain tension is held tight by oil pressure on the rear timing chain guide. If the engine is not running, there is nothing there to keep it tight.

Sep 20, 2014 | 2007 Chevrolet Malibu

1 Answer

Adjust timing chain


Well first u need to remove the top cover and get to the cam. Remove the two bolts holding the cam sprocket and turn the engine till its at the tdc mark on the alternator rotor.on the sprocket there should be two notches. These have to line up with the top surface of the head. Ie one of the bolts is up one down. Put the head cover back on and ur timing is set. Then if it is anything like my xl250s on the back rhs of the head there should be two bolts. The one at the top is a 10 mm bolt the one at the bottom is a 10mm nut. These adjust the cam chain tension. Start the bike. Warm it up and while idleing loosen both off NO MORE than TWO turns. Tighten them back up and there is your chain tension done. If it slips u prob need a new cam chain.

Aug 05, 2013 | 1983 Honda XL 125 R

1 Answer

Cam chain timing what mark to line up?


Turn your crankshaft to align the T mark to the cover's mark.Then put the cam shaft so that the mark on it's sprocket is all the way up marking the "toothy" lump on the cylinder's head top.These marks (crankshaft & camshaft) should be exactly on their marks after you have installed the tensioner properly and before you are ready to close the engine.

Feb 05, 2012 | 2002 Yamaha TT-R 125 L

1 Answer

How do I line up my marks on cam shaft and flywheel to set timing


Hi mate didn't get any info on what bike you are timing but this procedure is simular for most and is specific for WR YZ 250 426 and 450

set piston to TDC (top dead centre) this can be done by spinning the fly around until you can see the (i) mark stamped on the flywheel line up with the marks on the inspection plug hole (engine case) good idea to probe the cylinder through the spark plug hole to confirm the flywheel mark is correct (I have seen several 426) where the TDC mark does not give accurate TDC on piston so worth second guessing this process.


once TDC is set do not allow piston to move from this point on - starting with the exhaust cam with no slack on the cam chain the dot stamped on the cam sprocket should align with the face of head with the cam lobes pointing outward roughly 45 degrees towards the front wheel when this in place

you do the same with intake cam except the cam lobe will face opposite direction outward and the should be a dot aligning to the head


double check before you go further that when you put your finger in the chain tension hole and you tension the cam chain that when all slack is taken from the cam chain that your dots on both cams align with head face and that you still have piston at TDC if all checks out then this is timed set correct so torque all the cam caps back up install chain tensioner and the recheck all fly wheel marks are in correct position and piston is at TDC and the dot on each cam sprocket aligns to the head if it doesn't then re do the process

don't be surprised if this takes a few attempts as it takes the best of us usually at least two attempts to get all marks to align correctly thats why best to check and double check before you bolt it all down then you can adjust just by lifting one cam out and moving one tooth either direction


You have little room to play with and when you start putting chain on the cam sprockets you will find very little extra chain length to play with you may need to wiggle tug and pull both cams together to get them back in each time but go slow and gentle they do go in they just need to be encouraged


I happy to elaborate on any point if you need - good luck

Regards Jamie

May 28, 2011 | Yamaha XT250X Motorcycles

1 Answer

Haw do you time the engine up on a wr426 2002 model


There is no real way to change timing on YZ except change the cam itself to YZ450 cam or simular etc If your wanting to find out how to re install the cams you have already and cam chain then it is simple process but sounds complicated when its written
set piston to TDC (top dead centre) this can be done by spinning the fly around until you can see the (i) mark stamped on the flywheel line up with the marks on the inspection plug hole (engine case) good idea to probe the cylinder through the spark plug hole to confirm the flywheel mark is correct (I have seen several 426) where the TDC mark does not give accurate TDC on piston so worth second guessing this process.
once TDC is set do not allow piston to move from this point on - starting with the exhaust cam with no slack on the cam chain the dot stamped on the cam sprocket should align with the face of head with the cam lobes pointing outward roughly 45 degrees towards the front wheel when this in place you do the same with intake cam except the cam lobe will face opposite direction outward and the should be a dot aligning to the head
double check before you go further that when you put your finger in the chain tension hole and you tension the cam chain that when all slack is taken from the cam chain that your dots on both cams align with head face and that you still have piston at TDC if all checks out then this is timed set correct so torque all the cam caps back up install chain tensioner and the recheck all fly wheel marks are in correct position and piston is at TDC and the dot on each cam sprocket aligns to the head if it doesn't then re do the process don't be surprised if this takes a few attempts as it takes the best of us usually at least two attempts to get all marks to align correctly thats why best to check and double check before you bolt it all down then you can adjust just by lifting one cam out and moving one tooth either direction
You have little room to play with and when you start putting chain on the cam sprockets you will find very little extra chain length to play with you may need to wiggle tug and pull both cams together to get them back in each time but go slow and gentle they do go in they just need to be encouraged
I happy to elaborate on any point if you need - good luck

May 24, 2011 | Yamaha WR 426 F Motorcycles

3 Answers

I have 2003 chevy impala (V6 3.4 liter) i recently replaced both head gaskets. The car was running fine and now with engine back together engine want turn over sounds like its not firing but the plugs...


Did you get the timing set correctly when you reattached the cam to the timing chain? It sounds like you didn't have the #1 Top dead center or the cams were in the wrong position when you reset the timing chain. The cam shaft and Crank will actually look like they are set correctly two times. Once when it is in time and once when it is out of time 180 degrees. If you are more than 5 degree out of time or more than 5 degrees from the point where it is 180 degrees out of time the engine normally won't fire at all. The easiest way to check and verify this is to do compression checks on the cylinders, you will find you have little or no compression on several cylinders if this is the case. To correct it remove the timing chain and set the crank to #1 Top Dead center. Then go to the head that is on the #1 side, line the cam up so that both valves are closed for the number 1 and line that mark up. You have to find the firing order to make sure the intake is open getting ready to close for the next cylinder that going to fire and the exhaust valve is closed, then make teh final adjustment to line that cams timing mark up then replace the timing chain. This should get everything roughly within 5 degrees of zero and should get the motor so it will start.

Mar 02, 2011 | 2003 Chevrolet Impala

1 Answer

How to set Honda CBR 150 timing


Make sure the motor is on TDC compession stroke when you take it apart.
I'm skipping the tear down because if you want to adjust your timing, im assuming that you already
have it apart.

On TDC place the cam in the head so that both valves are closed.
There should be marks on the cam gear.(cam gear is attached to the cam)
Those marks should be parellel with the head.
While holding the cam in its slot in the head, carefully put the timing chain over the cam gear. You make have to pick the back of the cam up so the front leans forward enough to allow the timing chain to go on.
Once timing chain is on, double check that the motor is still at TDC and that the cam gear marks are parellel; with the head. if not you may have to go one tooth either way to get parellel.
If Motor is still on TDC and your timing marks are good, then your done.

Put the valve rockers back on and the timing chain tensioner, adjust your valve clearance.

With then spark plug out, turn the motor over by hand and watch the valves open and close, if anything is in a bind or if feels tight then your 180 degrees out which means you had you cam in upside down. Turn the cam over 180 degrees and your good to go.

The rotor is keyed so the only way that could go out of time would be if the keyway is sheared, hence the rotor would move retarded or advanced hence back fire out exhaust or intake.

If rotor keyway is sheared, you'll need a puller to pull off the rotor and replace the keyway.
It only goes on one way. On The Keyway.

If your CDI isn't working it will have to be replaced.
If your signal generators isn't working it will have to be replaced.

Nov 29, 2010 | 2006 Honda CBR 125 R

2 Answers

Specs


Well I just looked up the specs for you for the 2.7 ltr. I hope this is what you want.
Cam Caps 105 in.lbs.
Cam Sprocket 250 in.lbs.
Crank Dampener 125 ft.lbs.
Cylinder Head Cover 105 in.lbs.
Here is an illustration of the timing chain set up. Be aware these marks are lined up with the three sets of plated links on the chain. You should easily identify them if you have a new chain. You may have to clean an old chain to see them.
Good luck with this and let me know how it goes for you.
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Mar 26, 2009 | 1999 Dodge Intrepid

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