Question Just bought this old 4 wheeler at a garage sale. Its been sitting for years so I pulled the carb and put a kit in it, cleaned the gas tank and made sure the oil injector was working.
After doin all that, it does start but it takes a lot of cranking to do so, and regardless of wether its warm or cold it wont idle, and nothing I do to the mixture or idle screw makes a difference.
AND...omg this is getting old...it wont run unless you have the choke on a little bit. If you turn the choke off it runs ok for about 5 seconds then stalls in a manner like the gas was turned off.
Also does anyone happen to know what the float height measurements are for this thing? Its a Mikuni 30mm.
If anyone has a minute to help out this ATV neophyte I'd really appreciate it.
AnswerMike...
http://www.repairmanual.com/catalog/H2302
http://www.naturecoastmotorsports.com/eshopprod_cat_1952-8825_product_214528.198...
http://www.hoffcocomet.com/comet/polaris-atv-calibrations.asp
If you are absolutely sure that the carb idle circuits are clear, either the ignition timing is way retarded, the float level is too low... ( you can usually eyeball the float to see if the pivot arm is about parallel with the carb body. I don't think that there is a universal float level for a 30mm Mikuni.
Check the crankshaft flywheel to see if it moves up and down a little. Could either be a worn crank bearing or dead crank seal on that side, sucking air into the motor.
Check whatever kind of intake manifold it has to see if there are leaks there, too.
Dunno if has a flywheel magneto ignition, but if it does, clean the points and gap them to about .014" unless there are timing marks on the flywheel and stator/case, then set them to open at the timing mark alignment. If it does have a points setup, the condenser may be dying.
That is all I can guess about something I have never seen before...
Bill Silver www.vintagehonda.com
