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Im trying to find TDC on 2004 yamaha grizzly there are 2 notches with a line between them then if you rotate the engine a little more there is one more line by it self witch line is TDC

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TDC is usually the last line as you rotate the engine(it is also usually marked but hard to see though the timing hole)
It your unsure place a pencil or similar down the spark plug hole and feel when it is at the top.

Posted on Apr 03, 2011

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Where is the TDC notch on the crankshaft pulley?


if you have a series of notches on the pulley then the middle notch of them all is TDC. Point of fact is that the notches represent BTDC ( before TDC ---advanced) and AFTDC ( after TDC-- late firing past TDC). If the engine is starting and running ok then it is not at 30 degrees BTDC or it would not start easily.Each notch probably represents 5 degrees

Apr 13, 2014 | 1994 Mercury Villager

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I have a yamaha zx400 motorbike the problem im have is setting up the timing for the cams ....can anyone help please wayne


remove ignition cover , put piston next to cam chain at tdc and move cams round with chain over cogs till aligning marks on cogs line up with head face edge and replace cam retainers , some engines have small dots on cams that line up on the retainers which have a mark on so you can see them aligne too , if ok then fit chain tensioner and guide and rotate engine in direction of rotation with bike in gear and rotate rear wheel by hand to check if valves miss pistons etc ! all ok then refit all parts and run up P...

Oct 22, 2013 | Motorcycles

1 Answer

Where are the timing mark located on a 98 s70 Volvo?


There should be a little notch on each cam gear that lines up with a notch on each side of the cam cover.
Try looking at it from the side and rotating the engine with a large ratchet on the crank bolt (turn clockwise only).

The timing marks will line up every TWO rotations. You'll see how the notch on intake and exhaust cam gears both line up with the notches on the plastic cover.

Oct 02, 2013 | 1998 Volvo S70

1 Answer

2001 honda elite 80cc


LOOK FOR AN INSPECTION COVER ON THE LH SIDE OF ENGINE, REMOVE COVER, ON TOP OF CYLINDER THERE SHOULD BE ANOTHER COVER, ALSO REMOVE. REMOVE SPARK PLUG, USE A THIS SCREW DRIVER, PUT IT INTO THE SPARK PLUG HOLE CAREFULLY ROTATE THE ROTOR IN THE DIRECTION OF ENGINE ROTATION WATCH FOR THE SCREW DRIVER TO SLOWLY COME OUT OF THE CYLINDER IT WIIL RISE AND THEN FALL, AT THE PIONT OF DIRECTION CHANGE THIS IS TDC, REVERSE IT TO TDC, SEE IF YOU CAN SEE INTO THE INSPECTION HOLE THERE SHOULD BE A LINE AND A SMALL NOTCH ON THE SIDE OF THE HOLE. NOW LOOK AT THE TOP OF THE ENGINE WERE YOU REMOVED THE SECOND COVER THE CAM SPROCKET WILL HAVE A DOT ON IT, THIS SHOULD BE POINTED TO THE TOP. THIS IS IN TIME. AGIAN, PISTON AT TDC, ROTOR FIRE MARK LINED UP WITH NOTCH IN INSPECTION HOLE, CAM SPROCKET DOT POINTED TO TOP OF CAM COVER, YOU MAY HAVE TO MAKE ONE MORE ROTATION TO GET ALL MARKS TO LINE UP AT THE SAME TIME. IF YOU HAVE REMOVED THE CAM YOU MAY HAVE TO WALK THE CHAIN AROUND THE SPROCKET TO GET IT INTO TIME, ALSO TAKE ANY DEFLECTION OUT OF CAM CHAIN.

Jun 09, 2013 | Motorcycles

1 Answer

Resetting timing after replacing head gasket


Do you have the timing belt on and the tensioner set correct? If so, just rotate the crankshaft around until the notch on the crank sprocket is lined up with the pointer on the oil puimp housing (TDC). Now the camshaft sprocket's notch or pointer should be at the top and exactly in line with the mark on the rear timing belt cover. If it's not correct, you'll have to release tension on the belt, remove it, and set the camshaft to the mark. But before you do that, turn the crankshaft back (counterclockwise) just three notches. Then you can turn the cam to line up, then return crank to line up, and continue with belt installation, setting the tension, and re-checking timing marks after rotating the crankshaft a couple of revolutions. Once you know the timing is set to TDC, no further timing adjustments are possible, because the computer controls timing. I don't know how important it is, but just to let you know: Chrysler recommends after belt removal or replacement that one perform the "crankshaft and camshaft relearn alignment procedure" using the DRB scan tool (Chrysler's scanner device) or equivalent scan tool.
And the firing order on all four cylinder engines is the same: 1 3 4 2.
I hope this helps you out. Cheers.

May 11, 2012 | 1996 Plymouth Breeze

1 Answer

I am replacing the head that someone else pulled off. do i verify that the engine is on tdc when i replace the head or just align the cam gear with the notch?


Yes put motor on TDC,
Then the head.
Then cam gear with the notch and timing chain on.Keep checking that motor is still on TDC
Then the rockers, adjust valve clearance, and then rocker covers.

NOTE: When the motor is on TDC both valves will be closed, keep that in mind when placing your cam, so your not 180 degrees out.

Dec 08, 2010 | 2002 Yamaha TT-R 125 L

2 Answers

I have a 2002 pt cruiser with a 2.4 litre motor. I've tried to install the timing belt but it does not line up with the 4 scrib marks. I do not know how to rotate the cams in the right order for the belt...


It is typical to have to stretch the belt a tad as you install--needs to be tight across the cam sprockets and from the right cam to the crank gear. Then the tensioner should take up the slack on the other side. 0996b43f80209592.jpg
  1. enlarge_icon.gifenlarge_tooltip.gif
  2. Fig. Camshaft and crankshaft alignment marks-2.4L engine

To install:

0996b43f8020873a.jpg enlarge_icon.gifenlarge_tooltip.gif Fig. Install the belt tensioner


0996b43f8020873b.jpg enlarge_icon.gifenlarge_tooltip.gif Fig. Proper timing belt routing

  1. Set the crankshaft sprocket at TDC by aligning the sprocket with the arrow on the oil pump housing.
  2. Set the camshafts timing marks so that the exhaust camshaft sprocket is a 1 / 2 notch below the intake camshaft sprocket.
  3. Install the timing belt by starting at the crankshaft. Go around the water pump sprocket, idler pulley, camshaft sprockets and the tensioner.
  4. Move the exhaust camshaft sprocket counterclockwise to align the marks and to remove any slack.
  5. Insert a 6mm Allen wrench into the tensioner opening on the top plate of the tensioner pulley. Rotate the top plate counterclockwise. The pulley will move against the belt and the tensioner setting notch will start to move clockwise. Continue to move the top plate counterclockwise until the setting notch is aligned with the spring tang. Using the Allen wrench, to prevent the top plate from moving, tighten the tensioner lock bolt to 220 inch lbs. (25 Nm). Make sure the setting notch and spring tang are still aligned after the lock nut is tighten. If not repeat the procedure.
  6. Remove the wrench from the belt tensioner.
    NOTE When repositioning the crankshaft to the TDC position, this must be done during the clockwise rotation movement. If the TDC is missed, rotate a further two full turns until TDC is reached. Do not rotate the crankshaft counterclockwise as this will result in improper tensioner settings.
  7. Rotate the crankshaft two full revolutions and verify that the TDC marks are properly aligned.
  8. Check the spring tang is within the tolerance window, if not repeat the previous two steps.

Aug 28, 2010 | Chrysler PT Cruiser Cars & Trucks

1 Answer

Golf fti 8v, 1993 k- reg 2 E engine, Is the engine at tdc?


slide a straw or a pen into the plug hole and slowly rotate crank pully back and forward and note the rise and fall of the straw this will indicate TDC . once TDC is achieved note the mark on the pully should be alighn with a mark on the timming case .rotor button to number one lead will have you on compression stroke .cheers MAL

Jan 02, 2009 | 1995 Volkswagen GTI

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