Point 3 - Knowing the characteristics of each model's equipment enables a clearer setup.Point 2・Normal ignition timing is the best for normal engine, tuning engine needs to be adjusted separately.Point 1・The ignition timing is one of the factors that determine the engine condition and the good or bad condition.For example, if you could develop and market a compact, button cell or rechargeable timing light, it would be in high demand in today's popular old motorcycle market. There are two types of timing lights, battery powered and dry cell powered. The same applies to points, non-contact CDI ignition and transistor ignition. The timing light (timing strobe) is used to check the ignition timing in real time for both 2-stroke and 4-stroke engines. Use the timing light to check the ignition timing. After confirming that the top dead center imprint line and the tip of the pointer are in agreement, let's start the work of checking and adjusting the ignition timing.
In this case, pinch the pointer with fine pliers to align it with the engraving line. After fixing the dial gauge and holder in the plug hole of the No.1 cylinder, find the top dead center and align the pointer with the top dead center inscription on the rotor side of the crankshaft. Let's check the top dead center of the Kawasaki Triple H2 using a special tool made by Yamaha. Confirmation of upper dead point of Kawasaki H2, specific example If you read the protractor angle for each of the two positions, you will find that the middle position is the more correct upper dead centre, and you can set the pointer at that angle and then re-adjust the gauge pointer to the correct "0" position. For example, if you read the angle of the protractor at 0.1mm before the approximate position where the pointer stops, and at 0.1mm after the pointer stops and starts to return, you can find the correct upper dead center at the middle position. The image shows a stainless steel BBQ skewer). The protractor is placed on the crank and a pointer (made from wire or wire rod) is placed at the desired angle. While turning the outer circumference of the cage in that position to set the pointer tip to "0", check with the small needle gauge that the measuring plunger of the gauge has been pushed about 2 to 3 mm.Īn engine protractor is necessary to find the position of the upper dead centre more clearly. Turn the outer circumference of the gauge at upper dead center to set "0".Īfter setting the gauge, tighten and fix it firmly, turn the crankshaft slowly and the upper dead centre is the position where the dial gauge stops on the right-hand side (1.00 mm per revolution of the gauge, i.e. It is advisable to remove the spark plug, insert the long thin screwdriver tip into the plug hole, slowly rotate the crankshaft forward, stop the crank just before the screwdriver is pushed up the most, and set up the gauge for checking the top dead center. This is where an engine protractor or engine timer comes in handy. When tuning an engine, it is often necessary to measure the position of the pistons with a dial gauge to reconfirm the "top dead center" position before adjusting the ignition timing or measuring the valve timing. In the case of engines installed in commercial vehicles, the piston is considered to be at top dead center when the markings on the side and circumference of the flywheel and magnet rotor match the markings on the fixed side of the engine (crankcase, engine cover, etc.). 12 degrees) before the top dead center (TDC = Top Dead Center). The numerical data of the ignition timing is often displayed as "◎ degree" (e.g. If it's a 4-stroke engine, it's marked "◎ degrees before top dead center. Adjusting the gap and position of the sensor is also important.Use the timing light to check the ignition timing.Confirmation of upper dead point of Kawasaki H2, specific example.Turn the outer circumference of the gauge at upper dead center to set "0".2-stroke engines marked "◎mm before top dead center".If it's a 4-stroke engine, it's marked "◎ degrees before top dead center.