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Harley Davidson Ironhead Sportster Ignition Timing Free Help

Harley Davidson Ironhead Sportster Ignition Timing Free Help

The Harley Davidson Ironhead Sportster did not come equiped with an electrical ignition untill 1979. The chance is that just about every Ironhead Sportster on the road has an automatic centrifugal ignition running points. This tells how a custom motorcycle rider can set the timing on their own.

                            

Harley Davidson Ironhead Sportster Ignition Timing Free Help Covers

The Harley Davidson Ironhead Sportster ignition timing free help covers a battery ignition with an automatic centrifugal ignition. It can get taken care of under periodic maintenance after the advance mechanism has been inspected for for smooth operation and lubricated lightly with  W.D.-40 or an equivalent lubricant at each regular tuneup. Why shouldn’t the advance mechanism always be able to move nice and freely? 

Harley Davidson Ironhead Sportster Ignition Timing Free Help Timing Light

A Harley Davidson Ironhead Sportster ignition timing free help timing light be used to set the single point Ironhead Sportster automatic centrifugal ignition timing. That allows one to learn when the spark plug is firing. Connect a strobe-type timing light, following the manufacturer’s instructions. Since both spark plugs fire at the same time, the timing light trigger probe may be connected to either cylinder, but Harley specifies the front spark plug lead. Why shouldn’t the instructions from Harley Davidson be followed? 

Harley Davidson Ironhead Sportster Ignition Timing Free Help Remove

Harley Davidson Ironhead Sportster ignition timing free help remove the timing inspection plug. Harley Davidson left some marks on the crankshaft so the Ironhead Sportster timing can be set. Then install a clear plastic timing hole plug (Harley Davidson part No.96295-65) to prevent oil splash. If the Harley Davidson part can not be found several custom motorcycle shops carry clear plastic timing hole plugs. It really helps to be able to see clearly through which ever one gets picked out. Why did Harley Davidson have to cap the timing hole with some metal that can not be looked through?

Harley Davidson Ironhead Sportster Ignition Timing Free Help Start

Harley Davidson Ironhead Sportster ignition timing free help start the engine and run it at 2000 rpm. It has to be running like this to get the Ironhead Sportster timing set properly.  If the custom motorcycle no longer has the stock  one can hit an auto parts store and look for an electric tachometer. There is one made for old pickups that can be used while timing an Ironhead Sportster. The 2000 rpm is used to set the advanced mode used at high speeds. Eighteen hundred rpm is for the retarded mode the engine runs on as the engine idles. Most of the Ironhead Sportster repair manuals tell one to use two thousand rpm. Why isn’t idling as important as hauling it?

Harley Davidson Ironhead Sportster Ignition Timing Free Help Open

Harley Davidson Ironhead Sportster ignition timing free help open up the Ironhead Sportster automatic centrifugal ignition by taking the outer cover and the gasket off.

Harley Davidson Ironhead Sportster Ignition Timing Free Help Loosen

Next in the Harley Davidson Ironhead Sportster Ignition timing free help loosen both timing plate screws a little bit. This is done to make it easier to move the timing plate as the Ironhead runs.

Harley Davidson Ironhead Sportster Ignition Timing Free Help Acceptable Direct

Harley Davidson Ironhead Sportster ignition timing free help direct the timing light at the Ironhead Sportster timing inspection hole. The timing light stops the vertical bar each time the front cylinder fires, and the dot each time the rear cylinder fires. There are three acceptable patterns. One shows the dot clearly at the left with the line showing clearly to the right. Another shows the dot fully to the right with the line showing clearly to the left. Since both spark plugs are supposed to fire at the same time the third pattern shows the line right on the dot right in the middle of the timing hole. Why shouldn’t the timing get set just right?

Harley Davidson Ironhead Sportster Ignition Timing Free Help Adjuster

Harley Davidson Ironhead Sportster ignition timing free help. adjuster. In the upper left hand corner of the plate there is a small opening that allows one to stick a small screw driver through it. That is how the timing plate gets moved as the engine runs. Moving it to the right is advancing the timing. Moving it to the left is retarding it. You just move the timing plate until the dot and the line show like they are supposed to. Why shouldn’t two bikers help each other adjust Ironhead Sportster timing every once in a while?

Harley Davidson Ironhead Sportster Ignition Timing Free Help Adjustment

Harley Davidson Ironhead Sportster ignition timing free help adjustment is done according to what the timing light shows as the flywheel rotates. The light will flash each time a spark occurs. Adjust the plate until the light stops the front cylinder advance timing mark in center of hole.

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  1. Trailers

    March 19, 2011

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