Slang term, meaning suffer a failure, misfortune, fall etc.

Appropriate slang for this whole deal. And you're right on point about mixing parts - easy to fall down a hole. On the points, I ordered by number the right part but I was shipped the wrong part and never checked. The condenser... I have the oddity of having a Japanese motor vs. an American import - whether that figures in I have no idea. I found the old points and they were not pitted; in pretty good shape actually. Perhaps the Japanese market motors had a slightly different ignition coil and therefore the slightly different uF rating. Beats me. I'll go with matching what came on and see what happens. Lesson learned.

Thanks. Over here in the States that might be 'have a crapper,' that word being slang for a toilet. We never have had as much dignity as you chaps!

Referring to a toilet as a "crapper" actually has to do with a English gentleman, Thomas Crapper.

en.wikipedia.org/wiki/Thomas_Crapper

To complete this topic... what was definitely a crapper... I now have a nice bright spark.

To recap - this is a DT-1B and Partzilla has the points as: "1M1-81321-20". I ordered this number and they worked perfectly. As has been pointed out in this thread, part no. 214-81321-20 is also listed for the DT motors. I don't know if these numbers are for the same part but they most likely are. Watch you model number and check to make sure you receive what you ordered. I originally ordered 214-81321-20, but received what looks like 218-81321-20 - that # definitely doesn't work.

Slapped in the new points, installed the NOS condenser my neighbor found, timed it, and got a nice bright spark. This saga is over... now onto the next one!

Thanks for all the help and advice - spot on as usual.

Glad you got it sorted, despite my efforts to go off topic!

Greetings all.

I just wanted to add the final outcome for those who might benefit from my learning experience.

After I installed the correct points and the new NOS condenser my neighbor found I got spark, but it wasn't bright and inspiring. I measured the output voltage from the secondary and got a measly voltage reading. I suspected that the condenser, though NOS, was not performing well so I yanked it. I found a new automotive condenser of matching capacitance and mounted it next to the ignition coil up top. And I later replaced the cheap eBay coil I'd purchased with an Emgo unit per recommendations on this forum. What a difference. I got well over double the voltage from the secondary and a nice blue-white spark at the plug. The Emgo unit does not have exactly the same spec for internal coil resistance as what is quoted in the Yamaha manuals (shown on the drawing in black text), but it's an excellent match to the output from the magneto and probably out performs the original.

I've learned to triple check part numbers and measure new against old to ensure you have the right parts. Also that NOS parts, though original, might not be up to snuff. New, fresh stuff is more likely to make you smile.

For anyone tackling an Enduro to MX conversion, I've attached a drawing of what I ultimately did, along with measurements. The engine was originally a Japanese market Enduro motor stuffed in a custom MX frame. When I opened the motor it had all three coils in the magneto. In the rebuild, I opted to remove the unneeded coils and just go with the source coil which was in great shape. I unwound the charging coil winding and mounted the bare armature frame so I could use the alignment marker that attaches to it. I found the alignment between that marker and the mark on the rotor to be spot on. As mentioned elsewhere in the forum, when the timing is right the full open point gap will be on spec - I got .012".

Hope this helps someone down the road. With thanks to this forum's terrific members for helping me get this job done.

thank you for posting your solution and attachment.

I just bought a NOS nippondenso points and condenser kit. I have not installed it. Waiting on Emgo ig coil and a flywheel puller tool. I hope the old new condenser is good.