rpm meter By scooter62 (Read 778 times)

[scooter62]

Hi everyone I'm knew to this forum. I have a 86 Honda elite 150 I am working on and I am looking for advice on what tachometer people prefer to use to set the idle speed. 1,500 that it says in the book seems high and all I have is a old 4,6,or 8 cylinder car tach/dwell meter. Thanks, Scott

[jct842]

just put on center stand and increase idle till rear wheel spins then back it off a tad till it almost stops or stops.....your done good as it gets

[Alleyoop]

The 150s like to idle around 1500-1800 that is where you are going to get the smoothest idle and not vibrate a lot.
Alleyoop

[redroush00]

What if your wheel doesnt start to spin until 2500? Should it still be set that high?

My scoot rarely ever idles anyway except at a stoplight for a moment here and there. What are the dangers of a higher idle?

Even still at startup when choke is on its even higher still.

[Alleyoop]

WOW!! 2500 idle and higher when it first starts cold with the ENRICHER, you have it set WAY to high, May I ask WHY??

If would say the Clutch has stronger springs if at that idle the wheel is not turning.
Alleyoop

[FrankenMech]

To use a standard Tach/dwell on a single cylinder 4-stroke engine just use the 4 cylinder TACH setting. Multiply the resulting reading by two. The 4-cylinder tach is expecting to see two spark impulses per engine revolution. Some engines like our scooters spark every revolution. The standard old-time automotive engine with a 1/2 speed distributor only fires a given cylinder every other revolution. A person just has to think about how many ignition pulses a given engine has per revolution. Take two aspirin and call the doctor if the headache persists.