what the little spanner shape thing mean on the Yam pulsar trigger

[Lozza]

lozza,when you get the timing light thing happening on a MX175A,ya still gotta stick the screwdriver through the flywheel windows to alter the pulse coils positioning plate to obtain correct alignment of timing marks,(that is if it dosen't agree with strobe results), personally i preferr the dial guage method thanks ,

I use an Innova light with the advance on the display, that even better than the dial gauge method. Never taken any notice of factory timing marks. Always strobed against mm from TDC in the past.

[Freakshow]

yer but is the advance display in mm or degrees  ?

[Lozza]

advance is advance.

[chrisdespo]

Yes but think of this, is it degrees btdc or celcius? how do you use the dial guage without the degree wheel on the crank to check the marks are in the correct position.  i think you need to use all three to get it right. dial guage, degree wheel and a timing light. and yes the funny little mark is for your screw driver.

[Lozza]

A degree wheel is just not accurate enough. If it's 1mm BTDC and that equals 15 deg and they strobe correct why would I bother with a wheel?

[pancho]

 It seems to me that the best most accurate way is with a strobe light with a degree mark on the flywheel measured after calculating the degrees into millimetres mathemtically. [Somewhere I have seen a formular for this without having to go back to school.]
 cheers.

[chrisdespo]

degree wheel is the best just make your own pointer and check with original marks this is the wat you check your port timeing. or cam timeing to dial your cams to correct specs, twin cam of course. used all the time on 900 kawas ans gs suzies. scoff if you must!!!