How do you change the valve timing on a Suzuki DR650?
Remove the spark plug and valve inspection caps, intake and exhaust. Remove the valve timing inspection plug and magneto cover cap. Turn the crankshaft counterclockwise with the box wrench to set the piston at T.D.C. on the compression stroke.
How to adjust ignition timing on Triumph 650?
Adjust points which are closed and just opening Push and hold cam shaft clockwise with screwdriver Opens Auto-Advance assembly fully Slacken secondary plate set screws for closed/opening points
When do I need to adjust the valve clearance?
Valve clearance adjustment must be checked and adjusted, 1) at the time of periodic inspection, 2) when the valve mechanism is serviced, and 3) when the camshaft is disturbed by removing it for servicing. Valve clearance is to be check when the engine is cold.
What’s the best way to find the TDC on a car?
As soon as your thumb moves it will relieve the pressure, allowing you to place it over the hole again. Look into the hole with a flashlight to find TDC. Once your thumb has been pushed off the spark plug hole, use a flashlight to peer down into the hole at how close the cylinder is to the hole itself.
When is the bottom end of a piston at TDC?
There is no concept of a compression stroke if you remove the cam from the equation. The bottom end simply goes up and down. When piston number 1 is at the top of it’s travel, your bottom end is at TDC.
How to determine TDC after bottom end rebuild?
2) look through the spark plug hole and eyeball it till the proper piston is nearly tdc (you may be off a few degrees but at this point some marking on the crank should be pointing up, typically a dot on the timing cog)
Which is TDC when the crank is 180 degrees off?
If the cam is 180 degrees off (360 deg for the crank) it should not make a difference. because each 360 the crank does the cam does 180 meaning piston 1 will be tdc when the cam lobes are pointing up and again when they are down. but you still need to make sure your cams are at exactly their 180 degree spot relative to the cranks 360 degree spot.
Do you need TDC at the compression stroke?
So you need to be TDC at the compression stroke to set your cam gears & crank in synch to have the valves in proper position. Just believe if your are not properly aligned your valves will crash to piston heads unless certified non interference engine.