What happens if motorcycle timing is off?
Most modern motorcycles are of this design. If the valve timing is incorrect, not only will the engine not run, but the piston could smash into the valves, causing catastrophic damage. Usually, the result is bent valves and damaged pistons. If piston-to-valve timing is off, this is the result.
Where are the timing marks on a DOHC engine?
There are usually some type of timing marks on the camshafts and crankshaft that indicate the engine is at Top Dead Center for cylinder one on the compression stroke. Check to see that these marks are also close to being lined up. 3. Now, slowly rotate the crankshaft until all the factory timing marks at the crankshaft line up.
How to put timing chain on J 44221?
Install J 44221 with the camshaft flats up and the number one cylinder at top dead center. Compress the tensioner and lock in place. Install the crankshaft sprocket. Install the intake camshaft sprocket into the timing chain. Align the (dark) link of the timing chain with the timing mark on the intake camshaft sprocket (1).
How do you set ignition timing with no timing marks?
Rotate the engine very slowly back and forth until the screwdriver is at the maximum height. This indicates the number one cylinder is at Top Dead Center or “TDC” on the compression stroke. Locate the number one spark plug wire on distributor cap and make a tic-mark of this position with a marker pen on the distributor housing.
When to rotate the crankshaft on a DOHC engine?
Rotate the crankshaft until the intake lobe begins to open the intake valve. Remember that you must always rotate the engine in its standard direction of rotation. Never go the opposite way as it may create slack in the timing belt or chain that will produce incorrect readings.
There are usually some type of timing marks on the camshafts and crankshaft that indicate the engine is at Top Dead Center for cylinder one on the compression stroke. Check to see that these marks are also close to being lined up. 3. Now, slowly rotate the crankshaft until all the factory timing marks at the crankshaft line up.
How to set the timing on a BA DOHC?
1: rotated crank shaft to make cylinder at TDC/top dead center. b) there is a timing position indicator on timing Crankshaft tone wheel, it’s TDC when the position indicator at 6 o’clock. then it’s correct timing setting.
Install J 44221 with the camshaft flats up and the number one cylinder at top dead center. Compress the tensioner and lock in place. Install the crankshaft sprocket. Install the intake camshaft sprocket into the timing chain. Align the (dark) link of the timing chain with the timing mark on the intake camshaft sprocket (1).
Where does the timing belt go on a double overhead cam?
Turn the cams until the marks on the drive sprockets (commonly referred to as gears) line up and then fit the timing belt. Timing belts are often directional and will usually be marked as such. The exact configuration of timing marks depends on your engine. The variety of systems devised over the years is vast.