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Makotosun

L5TA Timing procedure?

  • dmcarthur
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L5TA Timing procedure? was created by dmcarthur

I am wondering if anyone has a service manual for the L5Ta.  I am having trouble getting information on how to set the timing.  My email is This email address is being protected from spambots. You need JavaScript enabled to view it..  Thanks. 
27 Jan 2026 18:14 #1

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Replied by pabdt on topic L5TA Timing procedure?

manual states 1.8mm BTDC.   I am not familiar w/that bike, so hopefully this is the correct link. if what I think reminds me of my 74 DT125 for timing.  page 73 of manual listed in "scramblers" at legends . L5TA Service Manual
________________________________________________
1969 Yamaha CT1 175
1974 Yamaha DT125A
1974 Yamaha DT360A with SP96 Exhaust
Next…196x-197x Yamaha something.
Last edit: 27 Jan 2026 19:55 by pabdt.
27 Jan 2026 19:52 #2

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Replied by dmcarthur on topic L5TA Timing procedure?

Thank you so much.  I removed the stator today and am trying to figure out how the points are triggered.  I do not see a cam on the shaft - strange.  Any ideas?  
27 Jan 2026 20:23 #3

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  • MarkT
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Replied by MarkT on topic L5TA Timing procedure?

Cam is on the "governor assembly" (advance mechanism) which is held on by the rotor bolt.
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
28 Jan 2026 07:58 #4

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Replied by dmcarthur on topic L5TA Timing procedure?

Ok - thank you. It is strange that there is no noticeable cam on the governor assembly like on other bikes. I guess it works differently.
28 Jan 2026 09:18 #5

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Replied by MarkT on topic L5TA Timing procedure?

There is a cam on the governor.  Otherwise points wouldn't open.  It's a single so the cam bump can be and is gradual.
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
28 Jan 2026 10:17 #6

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Replied by RT325 on topic L5TA Timing procedure?

Points breaking at 1.8mm or 72 thou btdc with advancer held open & you're good to go. Gap around 15 thou max too. I worked on those new. Good in their day!!.
28 Jan 2026 16:07 #7

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