Question about 1983 Honda XL 125 R

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Ona honda XL185 does the cam chain recieve tension from the 3mm

Bolt in the top of the crankcase or is there a spring or something behind the flywheel

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The only thing you can do is take it all apart there is no simpler way :( sorry

Posted on Jun 30, 2009

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There is 2 nylon guides that pick up the slack for the chain you can adjust the guides to tighten the chain if its makling a bit of noise

Posted on Oct 03, 2009

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1 Answer

How do I install the cam chain back on the cams of a 2012 ktm sxf 250?


line the TDC mark on the flywheel/crankcasing up , then the cam shaft marks paralell to the cylinder head mating surface then fit chain, fit chain tensioner, take plug out and turn by hand to make sure valves aren't knocking, **** squeeze bang blow! intake fuel, compression, ignition exhaust out

Jan 27, 2012 | 2008 KTM 250 SX-F

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Started the other day and now makes the most terrible sound from the engine crankshaft area I think. Like a very loose cam chain. Have checked that the tensioner is OK - took it out, examined it, reset it...


Yup, or it even may have a oil pump chain also. These are very deep inside....but. Can you hear the noise if you remove the spark plugs and rotate it by hand? You should be able to turn it by either end of the crank end bolts (Flywheel bolt)

May 13, 2011 | 1992 Honda CB 750F2 Seven Fifty

1 Answer

Timing chain noise


Yes, that would sound about rite the xl125 r along with all the single hondas are pron to chain noise, easy fix, remove alternator l/ h cover, also timeing cover on cylinder head, mark plate and case with screwdriver for exact replacment, undo 10 mm bolt in end of camshaft and remove the atu unit take care not to loose the locating pin from the camshaft
Remove the pin if loose, undo the 2cover bolts and remove the cam cover, locate the timeing mark on the cam wheel and turn the engine until the mark on the wheel aligns with the mark on the case at about 12 oclock, then check the position of the lower pully and mark this, undo the top wheel bolts securing it to the camshaft, gently pull the wheel of the cam slightly and then hook the chain off the wheel, the cam wheel will now pass through the case opening,the cam chain will now come off the lower wheel, and can be pulled up and out over the end of the camshaft, and replacment would be in reverse order, checking alignment of all previously noted marks and security of all fixings before rotating the engine with a spanner and check it completes a full 360 degres before atempting to use the kickstart, the tensioner is addjusted by removing the top nut from the tensioner located on top of the crankcase lh side at the rear of the cylinder, then undo the 14 mm tensioner bolt, you could try first off screwing a 4mm screw into the tensioner, where the 10 mm bolt is removed, undoing the 14mm and pulling up on the screw with a pliers while tightening the 14mm locking device, as the tensioner is automatic this would be a manual addjustment and may remove the exsess slack

Feb 27, 2011 | 1985 Honda XL 125 R

1 Answer

I need to adjust the cam chain tension on a 1980 honda cx 500 custom. Where is it located and how do i do it? Do you have any pics that can be attached?


Take off the tappet hole inspection cover behind the cylinder on top of the engine case. Remove the tappet hole inspection cover underneath the radiator in the front of the motor. Put a 17 mm socket on an extension with a breaker bar in the front hole and turn the motor over manually until the top dead center (TDC) mark for the number 1 cylinder appears in the other hole.behind the right cylinder is a gold 10 mm bolt coming out of the back of the block. Loosen it one turn and re tighten it. You have just adjusted your cam chain. If you ever have to take off the rear cover to replace the water pump seal and you just happen to have a cx650 self adjusting cam chain tensioner, it will fit right in so you can forget about adjusting your cam chain ever again.

May 25, 2010 | 1980 Honda CX 500 A

1 Answer

Vt500 c ticking sound. Cam chain tensioners pretty sure its the cam chain tensioner springs. lost their spring If its been making this noise for a while what else would i need to replace. cam...


You have a self adjusting cam chain tensioner. It is sold as an assembly. Take out the complete unit and replace it with a new one. The springs are not bad , the device that keeps the pressure on the tensioner is slipping causing a ticking sound.

May 16, 2010 | 1985 Honda VT 500 C Shadow

1 Answer

How do you remove timing chain and re-time eng


If you need to remove the cylinder head, here's how. To remove the cam chain, you've got to also remove the left crankcase cover and flywheel.

First, you need to turn the engine over until the piston is at top dead center (TDC) of the compression stroke. Begin by removing the two round covers from the left side of the crankcase cover. Also remove the four tappet hole covers from the cylinder head cover. Turn the engine (in the normal direction of rotation) and watch the intake valves open - and close, then see that the exhaust valves open, then close. Now align the 'T' on the flywheel with the notch in the inspection hole. With all of the valves closed, the engine is at TDC of the compression stroke. Do not begin removal of the cylinder head cover until this is done - to avoid damage to the cover.

With the cylinder head cover removed, you will find two bolts attaching the cam chain sprocket to the camshaft. Turn the engine until you can get a 10mm socet onto the heads of the bolts and remove them. The sprocket will come loose and slide down onto the camshaft, enabling you to remove it an the camshaft.

Upon reassembly, set the cam timing by first setting the engine at TDC. Then, align the two marks on the cam sprocket with the gasket surface on the cylinder head. With the engine at TDC and the marks lined up, the cam timing is properly set.

Oct 24, 2009 | 1985 Honda XR 250 R

1 Answer

How do u remove timing chain and re-time engine (1984 xr 250 r)


If you need to remove the cylinder head, here's how. To remove the cam chain, you've got to also remove the left crankcase cover and flywheel.

First, you need to turn the engine over until the piston is at top dead center (TDC) of the compression stroke. Begin by removing the two round covers from the left side of the crankcase cover. Also remove the four tappet hole covers from the cylinder head cover. Turn the engine (in the normal direction of rotation) and watch the intake valves open - and close, then see that the exhaust valves open, then close. Now align the 'T' on the flywheel with the notch in the inspection hole. With all of the valves closed, the engine is at TDC of the compression stroke. Do not begin removal of the cylinder head cover until this is done - to avoid damage to the cover.

With the cylinder head cover removed, you will find two bolts attaching the cam chain sprocket to the camshaft. Turn the engine until you can get a 10mm socet onto the heads of the bolts and remove them. The sprocket will come loose and slide down onto the camshaft, enabling you to remove it an the camshaft.

Upon reassembly, set the cam timing by first setting the engine at TDC. Then, align the two marks on the cam sprocket with the gasket surface on the cylinder head. With the engine at TDC and the marks lined up, the cam timing is properly set.

Before calling the job done, make sure to adjust the tappet clearances to .002" on the intake and .003" on the exhaust valves.

Oct 24, 2009 | 1985 Honda XR 250 R

1 Answer

How many timing points are there for a gy 125cc 4stroke (2008 model) my bike is not on your list


There should be:
1 mark on the flywheel with a "T" mark which indicates the Top Dead Center of the piston's position.You must turn it to match the mark on the crankcase (a carved line usually).
1 mark on the camshaft's sprocket and a line carved near there on the head.At this structure manufacturers differ from each other.But if you look hard to figure out how it works I sure that you will see it.
You must push the camshaft's chain when you align the marks like when the tensioner will after you put it on.Use a screwdriver through the tensioner's hole.
When you are done the marks on the cam and the flywheel should align straight with their pairs on the case.
Hope I helped a bit.

Jul 22, 2009 | 1983 Honda XL 125 R

1 Answer

How do you adjust the tension on the timing chain for a honda Xl185S?


Hi blazinj
To adjust your cam chain.if you remove the small bolt in the top of the tensioner lock nut there is a 3mm thread in the adjuster rod.get your self a long 3mm screw or possibly a spoke (i use a tail lamp screw)thread it into the adjuster. Start the motor and with it idling undo the lock bolt(14mm head) and pull up on the screw just enough to get rid of the rattle. Dont overdo it. Then tighten down the locker. remove the screw, and refit the cover. Done. Dont forget to rate me for the advice. Cheers
regards robotek

Jul 14, 2009 | 1983 Honda XL 125 R

1 Answer

Valve Timing and Head Tension


line the second mark on the flywheel up in the hole on the left cover that is top dead center, that tensioner i believe you have to prewind to bring it back take the bolt out and use a small screw driver and wind it back in and leave it in there untill you put the cam back in and bolt it down. make sure you use caution when removing the bollt from the tensioner it is spring loaded. the cam sprocket has lines or dots they will need to line those up with the gasket surface make sure there is no press on the valves that will be top dead center comp

Dec 17, 2008 | 2002 Honda CRF 450 R

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