Planet Minis

sketchycheck

bike wouldnt start so i got it for 150. i figured it was the points so this is what i found wen i took it apart. the 1985 is on top how do i fix that ?


this is my 1971

cdoublejj

try cleaning the points.

sketchycheck

dude look at the top pic dosnt it look like its missing somthing compared to the bottm???

cdoublejj

it is an 85 so i assume it's a z50r with no lights? if so it's not missing anything and only has the ignition coils where as the ct does have lights and has ignition and lighting coils. points can be carefully filed with point files or finger nail files but, you need to find the gap specifications in the shop manual which should be floating around the net or doa search on the forums for it. hope that helps.

sketchycheck

cleaned the points still no spark

cdoublejj

well the condenser would be the next step i'd assume you need a new one, so clean points and new condenser in some cases a both new points and condenser everything else should be fine assuming it's a basic bike with no lights if new pints and condenser don't work it could be the coil but, before this make sure it isn't something stupid like kill wire short or bad kill switch.

Mexican yella is better at helping out with points, here is another thread involving points.

http://www.planetminis.com/f14/i-fou...now-94187.html

sketchycheck

alright put a test light on the wire coming out the motor lit up real bright so its not the points an theres power goin to the coil. so i put my 71 coil on. still no spark you guys think it mite be the killswitch?

sketchycheck

ok not the killswitch im getting spark all the way to the coil. but my 1971 coil that works on my 71 still wont give out spark nor will the 85 coil

pookiebear

isnt the 71 a 6volt and the 85 a 12 volt? I don't think the coils interchange. I may be wrong as usual though.

D-Day

The 1985 is 6 Volt

sketchycheck

so why you guys think i still dont have spark?

sketchycheck

bad coil?

CrawlerD

I would say bad coil. Make sure its grounded before hooking up another one, or that one will fry too.

sketchycheck

they fry if there not grounded?

cdoublejj

possibly i assume, also the spark plug could be ruined try another one.

sketchycheck

i did. i have an 88 kit comin wensday along with a z50 coil that works hopefully thats the problem

cdoublejj

if not the stator coil could be bad.

sketchycheck

but i have power goin into the coil the test light is brite

mexicanyella

Test your coil. With it bolted to the frame but unplugged from its source wire, and with a known good spark plug laying on a good ground point and hooked to the spark plug wire. Once all those conditions are met, take a 6V DC current source (battery charger, lantern battery) and connect the current source's (-) terminal to the bike's frame or engine somewhere and then brush the (+) terminal against the coil's source wire. As you briefly make and break contact, you should see a good solid blue spark at the plug. If you do, you can assume your coil is good enough to run the engine.

I would make sure you not only cleaned the points, but filed them flat--no pits or craters--and parallel, cleaned them well with electronics cleaner spray so there's no grit or oily residue left, and gapped them to .012"-.016".

You did actually reinstall the flywheel, with woodruff key, and tighten it before checking the spark, right? People have not realized before that they have to do that. The points cam and magnets are part of the flywheel and are necessary for the system to work.

sketchycheck

yep i did and ill try that now