Question about 2005 Yamaha WR 450 F

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Timing is off on bottom mark. I think the timing chain is stretched is this the correct diagnostic

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Check the belt tensioner, it may be broken

Posted on Feb 22, 2009

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Timing marks not lining up on xl 125 its either 1/2 a tooth out on either side of the cam sprocket

When this occurs, the timing chain has stretched to the point where you'll never get the valve timing exactly right. I'd replace the chain, they're cheap enough (about 25 bucks) and I bet it will line up spot on. Have removed some Honda timing chains that were almost stretched a full link longer than the new one I was installing. Good luck!

Jun 10, 2011 | 1983 Honda XL 125 R

2 Answers

Timing chain slapping when cold . can anyone tell me how to adjust timing chain on a 88 honda shadow vt 1100

yes, there should be an timing chain adjuster sticking out the side.
they are self adjusting, so if you think it needs further adjustment, it probably means that your timing chain is stretched and its time for a new chain.

Best Regards
Big Al

May 22, 2011 | 1988 Honda VT 1100 C Shadow

1 Answer

This is a 1984 1200 that will not start and back fires thru the exhaust and carbs

Back fire is an indication that the bike is firing incorrectly.
Your timing chain is probably stretched, due to the year.
inproper valve timing due to stretched timing chain will make the bike backfire.

I have other thoughts like stuck valves or inproper sparkplug wires on wrong plug,
i always start with easier and less expensive method.
1st check your sparkplug wires to make sure they are on the right plug.
2nd pull sparkplugs and do compression and leakdown test.
3rd pull componets to see if valves are opening and closing, (valve clearance check)
4th if valves are good, then timing chain is probably stretched.
5th if timing chain and timing marks are good, and valves are good, then proceed to
testing the signal generator to make sure your getting a signal to the cdi,
6th if you have a signal to cdi, the cdi tells which coil to fire. either # 1&4 or # 2&3.
if signal generator is working, but coils aren't firing right then its the cdi.
obviously your coils work because its firing, just back firing.

Thats all it could be from easiest to hardest.
Good luck and have a great weekend.
Big Al

May 21, 2011 | 1987 Honda GL 1200 Aspencade Gold Wing

1 Answer

I need to get to the timing chain for my 1986 threewheeler but i dont know how

Make sure the motor is on TDC.

You'll have to pull the rockers off and then you'll see the timing chain. the chain goes around the gear that is bolted to the camshaft(s) and then down around the crankshaft gear.
There will be a timing chain tensioner on the side of the motor. Lossen that to take the tension off the timing chain.
Now you can remove the chain from the cam gear, you may have to remove the cam gear bolts and the cam gear to get the chain off.
I reccomend that you mark the position of the cam gear so you put it back correctly.

If you just want to inspect the chain, just pull of the rockers and spin the motor to observe the whole chain and if it has any stiff spots or seems stretched.

Dec 08, 2010 | 1986 Honda VF 1100 C

1 Answer

I am in the process of changing timing chains on a 2005 suzuki boulevard c50t. I was wondering what the maximum stretch of the chains are. I am thinking it might just be the tentioners too. The weird thing...

The cam chain it stretched, just like a drive chain. It should not have any tight spots, or loose spots. Replace the cam chain and look into aftermarket cam chain adjusters like APE. Chaz Moto DC

Jan 22, 2010 | 2005 Suzuki Boulevard C50T

1 Answer

Timing on 125

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.

Aug 01, 2009 | 2005 Suzuki DR-Z 125

2 Answers

How do u know if your chain is worn out or if it

Unhook the master link and lay the chain in the concrete. Next, hold one end to the concrete and sort of push the chain towards the stationary end. The object is to push the chain together as opposed to stretching it apart. Mark the concrete at the location of the shortened end. Now again hold the stationary end firm and this time stretch the chain to its' fullest length. Mark the concrete again at the end of the stretched chain. If the distance between the marks is over one inch the chain should be replaced.
Look at the teeth of both sprockets. Are the teeth rounded on the end or are the teeth forming a pointed looking end? If rounded, then the sprocket is good. If pointed, then the sprocket is bad.
Bad sprockets can ruin a good chain. The exception to the one inch rule is a chain that is rusted and no longer limber. Replace a rusted chain. Remember, always install the master link clip with the blunt end facing the direction of chain travel.
Please rate this solution, Thanks.

Mar 18, 2009 | 2001 Yamaha YZF-R6

2 Answers

Correct timing chain marks. is a diagram available?

if the timing chain is off i dont think it would run, id suggest getting you're cams checked and reseat your valves, i have the same bike and an electronic copy of a repair manual, not for the exact same bike however. i have not been able to find the correct copy.

Nov 28, 2008 | 2002 Yamaha TT-R 250

1 Answer

Chains slacken off

way outside the recomended slack (which is 20-30mm). Any suggestions as to what could be causing this? I am thinking there are two options: 1) the chain and sprockets are shot and need urgent replacement. 2) the rear axle bolt is shot and despite being tightened to the correct torque it is loosening as I ride. Has anybody got any advice on this? Any feedback is welcome. Adjust the chain to spec then mark the adjustment slider and the swingarm at a common piont on both sides of the wheel. Use a paintpen or steal some nail polish for this. Then see if the wheel moves as the chain slackens off when you ride. It sounds like your chain and sprockets are toast though.......,,

Nov 10, 2008 | 2008 Beta RR 250 M

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