Re: Timeing on Johnson
Engine performance depends on the accuracy of ignition timing and carb link n sync. If he replaced major power head components, or disturbed the timing pointer, the pointer should be re checked against the Top Dead Centre mark on the flywheel.
1. Disconnect the spark plug leads and remove plugs.
2. Temporarily set timing pointer mid way in its adjusting slot. There is a piston stop assembly tool that you can use in number 1 cylinder hole but there are other homemade tools you can use such as bored out old spark plugs with a stop in them. Anyways, install the tool, or whatever, and turn the flywheel clockwise until the piston contacts the end of tool. Adjust the tool to the proper setting (as per your manual) and lock it.
3. Mark a line on rim of flywheel adjacent to timing pointer. Now turn flywheel counterclockwise until the piston contacts the tool. Mark a line on the rim of the flywheel opposite pointer.
4. Using a scale or tape measure, measure the mid point between the two lines. Mark the mid point line on the rim of the flywheel. If the mid point line and the cast in TDC mark on the flywheel are in agreement, the timing pointer alignment is correct. If not, turn the flywheel to align the mid point mark with pointer (hold flywheel in this position). Loosen pointer adjustment screw and move pointer to align with cast in TDC mark on flywheel. Tighten adjustment screw.
5 . Check timing with a timing light on spark plug wire number 1 as per the manual you have. Ill assume you have those directions in there, but if not just ask and someone will be able to help you out.
