New RM 125

mlane28
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mlane28
Hey guys I just got a 2004 rm 125 and it is my first two stroke. I was wondering if you guys have any tips for me about the two stroke and also what should I do for the oil mixture? And it is kinda hard to start cold...
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MotoTribology 10/10/2016 10:48am
10/10/2016 10:48am
Any API TC, JASO FD or ISO L-EGD rated oil would be the best option. The best ratio will probably be either 42:1 or 50:1 depending on your riding and carb settings. I'd start with 42:1 and if you notice excess oil in the exhaust or the spark plug fouls, try 50:1.
mlane28
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mlane28 10/10/2016 11:00am
10/10/2016 11:00am
MotoTribology wrote:
Any API TC, JASO FD or ISO L-EGD rated oil would be the best option. The best ratio will probably be either 42:1 or 50:1 depending...
Any API TC, JASO FD or ISO L-EGD rated oil would be the best option. The best ratio will probably be either 42:1 or 50:1 depending on your riding and carb settings. I'd start with 42:1 and if you notice excess oil in the exhaust or the spark plug fouls, try 50:1.
Ok thanks

I used Lucas oil motorcycle oil(I beleive 50w or something like that) at 32:1 bc I read that is what is the best for a 125.
MotoTribology 10/10/2016 1:08pm
10/10/2016 1:08pm
mlane28 wrote:
Ok thanks I used Lucas oil motorcycle oil(I beleive 50w or something like that) at 32:1 bc I read that is what is the best for...
Ok thanks

I used Lucas oil motorcycle oil(I beleive 50w or something like that) at 32:1 bc I read that is what is the best for a 125.
The Lucas you are talking about should be used in the transmission and not mixed with the gasoline. You should be using 2-stroke engine oil labelled as premix mixed in the gasoline.
mlane28
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mlane28 10/10/2016 2:46pm
10/10/2016 2:46pm
MotoTribology wrote:
The Lucas you are talking about should be used in the transmission and not mixed with the gasoline. You should be using 2-stroke engine oil labelled...
The Lucas you are talking about should be used in the transmission and not mixed with the gasoline. You should be using 2-stroke engine oil labelled as premix mixed in the gasoline.
Ok thanks

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colintrax
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colintrax 10/10/2016 4:29pm
10/10/2016 4:29pm
Try 40:1, 50:1 is crazy lean for a 125.

Far as hard to start cold, is it jetted properly? How many hours on the top end? Spark plug look good?
mlane28
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mlane28 10/10/2016 6:13pm
10/10/2016 6:13pm
colintrax wrote:
Try 40:1, 50:1 is crazy lean for a 125. Far as hard to start cold, is it jetted properly? How many hours on the top end...
Try 40:1, 50:1 is crazy lean for a 125.

Far as hard to start cold, is it jetted properly? How many hours on the top end? Spark plug look good?
It has 3 hrs on the top end jetted right as far as I know, but I got it started today the fuel was off that's why it was hard to start

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