Question about 1996 Honda VF 750 C Magna

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How to remove caqmshafts

Looking for procedure to slacken camshaft chains in order to remove camshafts for valve adj.

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Hi rckeirs
You can download a workshop manual from here
Will have every bit of info you need. 
regards Robotek

Posted on Feb 05, 2009

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1 Answer

08 v star 1300 camshaft timing marks


Hi Tony

Your best bet is to obtain the engine manual, also some engines has not got any marks to go by, a tool or lock bolt is inserted at a certain place provided to lock camshaft/s and crankshaft in place to remove chain or belt. You are tempting a delicate and precise procedure which can result in destroying the motor by going according to some ones instructions. Rather be 100% certain, especially when it comes to valve timing.
I apologise for not having the remedy, but at least maybe helpful advice.

Let me know you done.
Regards
Phillip

Apr 11, 2014 | 2007 Yamaha V Star 1300

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

Removing head from 250 honda rebel, how do i remove timing chain?


Hello,
Your CMX 250 has a single camshaft with removable sprocket. The basic procedure is to turn the motor over so that the Top Dead Center ( TDC ) marks line up on the crankshaft and the motor is on the compression stroke ( both Valves are closed ) When the crankshaft is a TDC the timing marks on the camshaft will line up and be horizontal with the cylinder head surface. Now you can remove the camshaft sprocket bolts and pull the camshaft sprocket off of the camshaft. This will allow enough room to slide the camshaft out and remove the sprocket.

Be sure that you put the crankshaft in the TDC mark when you re-assemble the camshaft. It is critical that the camshaft and crankshaft are exactly timed properly or you can cause major engine damage.

Thanks and I hope that this helps.
Steve

Jan 30, 2011 | 2004 Honda CMX 250 Rebel

1 Answer

How to replace head gasket


Hello and welcome to Fixya, First remove tank, remove spark plug cap and plug. Take the tappet covers off ( valve adjuster caps). Then remove the round timing covers on the side of the engine. Rotate the engine either by the kickstart, but recommend using a socket wrench on the flywheel. Rotate until you start to see the intake valves start to go down, as soon as they start coming back up. Use a flash light and continue to rotate slowly until you see a T mark, line it up with the case cover mark. Now you are on Top Dead Center. Remove all your valve cover bolts in a criss cross pattern a little at a time. Remove cover. Now on the rear side of the cylinder/head area there will be a cam chain tensioner, remove it. Now you can remove the cam sprocket, make sure to use a piece of wire or anything to tie up your cam chain to prevent it from falling down into motor or coming off lower gear, just make sure there's good tension on it when you tie it up, tie it up to the handlebar. Remove camshaft. Next remove your exhaust pipe, now remove all the fasteners holding your head down. Next remove your wire tied up at handlebar holding cam-chain, and slowly remove your head. Clean any carbon buildup, inspect cylinder for any abnormal wear (deep scratches ect..) Remove old gasket and clean both surfaces. Now as long as everything looks good just follow in reverse order, make sure when you install camshaft the lobes are facing down, and your camshaft gear marks are lined up with head and your still on the T mark. Check this a few times to make sure the engine didn't move some, if it does just put it back on the T mark. Once you get head, and valve cover back on check your valves to make sure there adjusted to spec. Also make sure you replace your exhaust gasket as well. If I can help you further please don't hesitate to ask, Thanks for your question. Good Luck :)

Dec 30, 2010 | 1985 Honda XR 250 R

1 Answer

Hi there iv got a honda xx 2000 fi i need to do the chain and tentioner can you plaese guide me on this one??the bike has 65000 km on do i need to chainge the chain also??


hi i am doing 1 myself at the moment, you will need to remove, airbox, throttle boddies, radiator, cam cover, bit fidly to remove in the frame but it can be done, as the cam chain is fitted on the r/hand side of the engine there is no need for a complete engine stripdown, but you will need to take some carefull obsevations, once the rocker cover is removed you will see the 2x camshafts, you will need to remove the front r/hand engine cover this is the crankshaft pulsar cover, you will need a new gasket here, then you will observe the timing marks on the crankshaft t/= top dead centre, and the coresponding marks on both the inlet annd exhaust camshafts all these must be aligned make a drawing of this as it will have to go back together, in exact same position, with no room for errors,the exhaust cam has a pickup on it, make a special note of the position of this, you will need to undo all the camshaft cap bolts, this will alow removal of the cams to ease replacing your chain, if you wish you could also undo the cam sprocket bolts , these will require a loctite compound on refiting, you will then see the chain tensioner, this is on the rear right of the cylinder and it is held in with 2 bolts a new gasket comes with the cam tensioner if you buy the kit, a new gasket is also needed on the camshaft pulser this is located on the right hand side of the cylinder head, if you can acheive the disasembly without any problems, taking notes, making drawings, you will be able to reasemble it in reverse order, always use original parts, dont use gasket sealer , turn over your engine useing a spanner initialy to ensure corect valve timeing, a workshop manual is a must for your torque wrench settings it would also be usefull in guiding you throgh the afore mentioned job. warning do not atempt this job if you are in any doubt of your compentence to do it, paul

Dec 16, 2010 | 2002 Honda CBR 1100 XX Super blackbird

1 Answer

I want to put shaft to my dr 650 rs, did i have to open the engine completely to pu it


No, only the top engine mount and Cylinder Head Cover need to be removed.

First step is so set motor at Top Dead Centre and remove top engine mount from bike.
Next remove cylinder head cover, the rockers will come off with it. Take notes and number the Cylinder Head Cover bolts as they are of differing lengths and must be replaced in same place with appropriate oil sealing washers on some.
Next slacken camchain tensioner and remove camshaft sprocket bolts. Note placement of steel half ring and rubber end cap. Pass a tie or wire through chain and attach to frame above to stop camchain dropping into motor...then you will have to pull engine apart.
Take note of sprocket alignment mark and remove the two bolts.
Lift off sprocket and camshaft.

Assembly is the reversal of this procedure.

Cheers!

Nov 16, 2010 | 1991 Suzuki DR 650 RS-E

2 Answers

Suzuki DR650RS Camshaft is broken into two parts. what could be the reason for breaking axles


In normal operation, there is no way the chain or valve springs could break a shaft. The only possibility, other than a defective camshaft when the bike was new, is that the cam chain was so loose the slack bound up around the sprocket causing enough pressure to break the shaft. Replace the chain, sprocket and camshaft and check the operation of the cam chain tensioner assembly. Please rate my answer.
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Feb 20, 2010 | 1990 Suzuki DR 650 RS

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

Yamaha FZ 400 engine timing


hi,normal way to set up fz is as follows,remove left hand engine cover and you will find cdi picups with a backing plate and interrupter tongue,remove all the spark plugs(dont get the leads mixed up),turn the motor by hand up to top dead centre on no1 piston,the tdc mark the plate will line up with the cdi pickup,no1 piston will now be at tdc,both sets of valves ex and intake should be closed and the tappets slightly rocking,if thay are not and any of the valves on no1 piston are open or tight,look to the end of the camshaft (where the cam fits into the bearing surface)and there will be a horizontal mark on each camshaft,release the cam chain tensioner,slip the camchain off the sprockets and rotate the camshaft untill the marks on the camshaft are exactly parrellel to the rocker box mating surface,fefit the cam chain and check alignment then retension the adjuster and check the marks again,if you have it right the marks should still be exactly parellel with the rocker box and the piston should still be sitting at tdc,if it is out by 1 tooth do it again untill it all three marks are exactly right,failing to do this WILL result in a valve sailing through the top of a piston,then it becomes a bigger job again,after you have got them adjusted correctly ,turn the motor over by hand to check that nothing is binding,if you are satisfied that everything is right,then use the starter and you should have compression,hope this helps

Jul 04, 2009 | 1998 Yamaha FZS 400 Fazer

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