Procedure For Checking Timing - Honda GX160 Tech Manual

PROCEDURE FOR CHECKING TIMING

With degree wheel or indicator located at 0 degrees or TDC., mark both the flywheel and some fixed
A.
point (such as right hand side of aluminum block casting right above flywheel) with aligning marks. Turn
the flywheel clockwise and stop at 26 degrees BTDC or 0.103"- 0.104" BTDC on your indicator. Make
another mark on the block casting that aligns with your mark on the flywheel.
B. Remove dial indicator so it will not be damaged by engine rotation.
C. Install timing light to a battery, if not self powered, and clamp inductive pickup to spark plug
wire. Wire should be hooked to standard spark plug gapped to 0.025". Using a drill, with an
extension that is cut off or turned to fit drill, place socket on flywheel nut and rotate engine in clockwise
direction.
D. Fire the timing light and observe. If the reference mark on the flywheel is between the two
marks on block casting that are TDC and 0.104 " or 26 degrees BTDC, the timing is legal. If mark is not
between marks on block casting when rotating, the engine will be disqualified.
Tech officials have the right to tech any or all cars in any class at their
discretion. Tech Officials follow the same chain of command as all
officers of QMA – as follows: Local – Regional – National I.E.
Regional tech officials can tech at any event at their region and
National Tech Officials can tech at any event in QMA. National Tech
Director is final authority on all tech issues.
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