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Question Looking for a Flywheel Puller for a 76 YZ125X

  • Grussell
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I have searched and searched for a flywheel puller with no luck. I believe it is a M18x1.5. I have a M18x1 and the threads are too fine. Can anyone point me to a source?
1978 DT400
1975 DT250
1976 YZ125X
1976 YZ125C - future project
1976 YZ125X - future project
2018 YZ250FX - my race bike

Last edit: 14 Jan 2022 07:05 by Grussell.
13 Jan 2022 20:06 #1

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I'm pretty sure it's this one ebay MP7 puller
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
13 Jan 2022 22:18 #2

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Pullers often turn into a nightmare when buying. I'm guessing MarkT is right but i shouldn't have googled damn it coz now i'm gonna confuse things. Marks link says 20mm, but this link www.motorcycleid.com/bikemaster/flywheel...140799&url=131795868 shows 18mm down the page a bit. I think possibly one seller is measuring the outside thread & other the depth of the thread. If i'm wrong then i don't know sorry. I have a couple of genuine originals somewhere of that style from 70's yz125 & yz80cc days. Once you have the right one just be sure you don't run out of rotor thread before contacting the crank end otherwise you'll need to space it up a bit internally. OP said 14mm i think?, could he please measure again.
14 Jan 2022 00:52 #3

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Thread is 20 x 1.5 RH.  I used it on a 76 YZ175C several years ago which according to the parts lists has the same rotor as the 125X.  Somewhere I have the old rotor...  had to get a new one because someone used a jaw puller and destroyed it.  It was really, really stuck. 

Very hard to measure on the bike.  18mm was too small.  Bike Master is 150604

www.denniskirk.com/dennis-stubblefield-s...81955.prd/281955.sku



 
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
14 Jan 2022 05:56 #4

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  • Grussell
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Replied by Grussell on topic Looking for a Flywheel Puller for a 76 YZ125X

I had a typo in my post. I need a m18 x 1.5. I have a m19 x 1.5 and it's too big. Your right on depth. The puller needs to be long as the crank shaft sticks out from the rotor quite a bit.
1978 DT400
1975 DT250
1976 YZ125X
1976 YZ125C - future project
1976 YZ125X - future project
2018 YZ250FX - my race bike

14 Jan 2022 07:07 #5

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  • Grussell
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Replied by Grussell on topic Looking for a Flywheel Puller for a 76 YZ125X

Mark,

The 125C and 125X don't use the same puller. The X is definitely18mm. I have a M19 x 1.5 and it is too big. I have a m18 x 1.0 which will start to thread but quickly binds. 

The one RT325 posted the link for might be too short, but for the price I may try it.
1978 DT400
1975 DT250
1976 YZ125X
1976 YZ125C - future project
1976 YZ125X - future project
2018 YZ250FX - my race bike

The following user(s) Liked this Post: MarkT
14 Jan 2022 07:24 #6

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That's interesting.  I'll have to go measure my puller.  I originally ordered an 18 and it was too small...  20 fit.  Or maybe I'm remembering wrong and got it backwards? 

Nope, I still have them both and it's definitely the 20 x 1.5 that worked. 

If you measure the ID of the hole in the rotor it's close to 18. That the minor diameter of the threads. Puller is 20.  If yours takes an 18, then ID of thread should be around 16?
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
14 Jan 2022 07:29 #7

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It was a YZ175c...  not 125c...  175c shows the same rotor as the 125x but parts list cross reference could be wrong.  It often is.

Somewhere I came across a Yamaha puller reference sheet but it's packed away someplace right now and I don't know which box it's in. 

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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
14 Jan 2022 07:33 #8

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Also, Dennis Stubblefield makes great pullers.  You can buy direct or on Amazon/ebay.

Here's a couple options
www.dssalesusa.net/store/p16/Made-in-USA-Flywheel-Puller.html

www.dssalesusa.net/store/p5/Made-in-USA-...Flywheel-Puller.html

I'd probably try the MP-17 as you could install a spacer if the other one looks too short.

 
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
14 Jan 2022 07:46 #9

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