« previous next »
Pages: [1]   Go Down

Author Topic: YZ 125 A ignition timing  (Read 4354 times)

0 Members and 1 Guest are viewing this topic.

Offline Brian Watson

  • Legend
  • *****
  • Posts: 749
  • First Penton in OZ
    • View Profile
YZ 125 A ignition timing
« 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..??
Logged

mainline

  • Guest
Re: YZ 125 A ignition timing
« Reply #1 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.
Logged

Offline matcho mick

  • Legend
  • *****
  • Posts: 2279
    • View Profile
    • Moto Tumbi
Re: YZ 125 A ignition timing
« Reply #2 on: April 22, 2013, 10:20:16 am »
1.2's tad retarded,A model MX100/125's 2mm (+- 0.15), :P
Logged
work,the curse of the racing class!!
if a hammer dosn't fix it,you have a electrical problem!!

Offline Freakshow

  • Superstar
  • ******
  • Posts: 7277
  • Adelaide, SA - looking for a "YZA" tank
    • View Profile
Re: YZ 125 A ignition timing
« Reply #3 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
Logged
74 Yamaha YZ's - 75 Yamaha YZ's
74 Yamaha  flattracker's
70  Jawa 2 valve speedway's

For sale -  PRE 75 Yamaha MX stuff, frame, motors and parts also some YAM DT1,2,A and Suzi TS bikes and stuff

Offline Brian Watson

  • Legend
  • *****
  • Posts: 749
  • First Penton in OZ
    • View Profile
Re: YZ 125 A ignition timing
« Reply #4 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...
Logged

Offline vandy010

  • Legend
  • *****
  • Posts: 1982
  • #789 MX125a BMCC Brisbane
    • View Profile
Re: YZ 125 A ignition timing
« Reply #5 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...
Logged
"flat bickie"

Offline VMX60

  • A-Grade
  • ****
  • Posts: 483
    • View Profile
Re: YZ 125 A ignition timing
« Reply #6 on: April 23, 2013, 06:14:33 pm »

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


Logged

Offline Brian Watson

  • Legend
  • *****
  • Posts: 749
  • First Penton in OZ
    • View Profile
Re: YZ 125 A ignition timing
« Reply #7 on: April 24, 2013, 06:05:41 pm »
Thanks Muz..  ;D
Logged
Pages: [1]   Go Up
« previous next »