point timing? for my us 90 (pic included)

**03 ORANGE SHEE** · 11-29-2005, 10:21 PM

here is the pic, i know the gap is 12-16 thousands, where do i line up the 3 marks on the cam?, and which is advance and retard ?, please point them out, this thing keeps carbon fouling plugs. i use the d8ha recommended plug

**MTS** · 11-29-2005, 10:36 PM

You talkin about the point plate? the mark on the top looks real close, little retarted maby.....line on the Mag lines up horizontal for timing..

**350x'inNY** · 11-29-2005, 11:21 PM

I just won a Honda NOS 1970 US90 shop manual. When it comes, I'll scan you some pics.

Bruce

**03 ORANGE SHEE** · 11-29-2005, 11:43 PM

thanks bud, i can use a copy!

**79ATC110** · 11-30-2005, 03:37 PM

take a look here, first post has a scan of the instructions for setting timing on the 70, 90, and 110
http://www.glamisdunes.com/invision/...howtopic=56887

**03 ORANGE SHEE** · 11-30-2005, 10:05 PM

thanks 79atc110!

**350x'inNY** · 11-30-2005, 10:17 PM

Originally Posted by 03 ORANGE SHEE

thanks 79atc110!

Hey... I got a 1974-1979 ATC90/ATC110 manual now.... the 1970 US90 Service manual will be here Friday. Oh... I got that pipe today... thanks! It's a much smaller diameter header than the reminence on my US90.

Either way, I'll take it down to the muffler place and see what they can do. I got a 83 110 pipe that's all rusted into like 3 pieces, but I think I'll see if the spark arrestor can slide into that pipe you sent me. Just let me know how to settle up with you on the shipping.

Bruce

**xljimmy** · 11-30-2005, 10:30 PM

Was reading the link above about the light to set points. The guy said you really have to watch the light because it doesnt go out, only dims. Seem like you could do the same thing with an ohmmeter. Never tried it but seems like same thing only instead of watching dimness of light your reading numbers.

**Unclediezel** · 11-30-2005, 11:33 PM

It will be a DRASTIC difference in light, so it isnt that difficult- Basically turning slowly (By hand ) and watching marks. Yes an ohm -meter works just as well.

**TeamGeek6** · 11-30-2005, 11:39 PM

"when the points open I expected the light to go out but that is not the case. The light merely dims, it does not go completely out."

The battery is feeding through the ignition coil to ground most likely, disconnect the coil and the light should go completely out. If not, somethings wrong.

**Unclediezel** · 11-30-2005, 11:49 PM

Originally Posted by TeamGeek6

"when the points open I expected the light to go out but that is not the case. The light merely dims, it does not go completely out."

The battery is feeding through the ignition coil to ground most likely, disconnect the coil and the light should go completely out. If not, somethings wrong.

Exactly right--If you "Unground" the coil, the light shuts down completely. The dimness is caused by "Feedback" thru the coil

Thread: point timing? for my us 90 (pic included)

Thread Tools

point timing? for my us 90 (pic included)