Figure 4-37. Ignition Timing F1000ORG-2

TM5-4110-234-14

TO 40R7-5-7-1

(1) Using the upper part of figure 4-37 as a guide, remove the two mounting screws (A) and pull the points

out of the box just far enough so screw (B) can be removed. Replace points and condenser with a new set, but do not

completely tighten mounting screws (A).

(2) Rotate crankshaft clockwise (facing flywheel) until points are fully open. Turn screw (C) until point gap

measures 0.020 inch (0.51 mm) with a flat thickness gage.

(3)

Tighten mounting screws (A) and recheck point gap. Place one drop of oil on breaker point pivot.

(4)

Proceed to Ignition Timing Procedure.

d. Ignition Timing. Always check timing after replacing ignition points or if noticing poor engine performance.

See figure 4-37 and proceed as follows.

(1) To check the ignition timing accurately, use a timing light when the engine is running. Connect the

timing light according to its manufacturer's instructions. Either spark plug can be used as they fire

simultaneously.

(2)

Place a white chalk or paint mark on the timing mark.

(3)

Start the engine and check the timing (20 BTC).

(4) If timing needs adjustment, loosen the mounting screws on breaker box and move it left to advance or

right to retard the timing.

(5)

Tighten the screws on the breaker box and recheck timing.

(6)

Replace breaker box cover and any other hardware removed.

Figure 4-37. Ignition Timing F1000ORG-2

4-86