OzVMX Forum

Marque Remarks => Yamaha => Topic started by: Brian Watson on April 21, 2013, 06:32:29 pm

Title: YZ 125 A ignition timing
Post by: Brian Watson on April 21, 2013, 06:32:29 pm

Hello out there..any one know what the ignition timing is supposed to be for a 1974 YZ 125 A..??

Title: Re: YZ 125 A ignition timing
Post by: mainline on April 21, 2013, 07:56:05 pm

Most yz125s of that era seem to be 1.2 btdc, but i don't have the specifics for that particular model sorry.

Title: Re: YZ 125 A ignition timing
Post by: matcho mick on April 22, 2013, 10:20:16 am

1.2's tad retarded,A model MX100/125's 2mm (+- 0.15), :P

Title: Re: YZ 125 A ignition timing
Post by: Freakshow on April 23, 2013, 01:04:07 pm

doesnt it use a key way so its set at factory ?
unless you are fitting the PVL

Title: Re: YZ 125 A ignition timing
Post by: Brian Watson on April 23, 2013, 04:15:25 pm

You picked it in one Freaky... PVL is going on... and as you kno w a PVL rotor does not have a key.... so...anyone have an idea????... or will I just start at 2.00mm BTDC and go from there...

Title: Re: YZ 125 A ignition timing
Post by: vandy010 on April 23, 2013, 05:14:32 pm

Mainline hit it in one.
1.2mm btdc
I use this on all my Yammie 125's with varying ignition systems, all cdi and
It works a treat.
MX 100/125's are points... ewe...

Title: Re: YZ 125 A ignition timing
Post by: VMX60 on April 23, 2013, 06:14:33 pm

This is std timing on the 1974 model later went to 1.2mm


(http://i36.tinypic.com/2qvt4x2.jpg)

Title: Re: YZ 125 A ignition timing
Post by: Brian Watson on April 24, 2013, 06:05:41 pm

Thanks Muz..  ;D