Just got this thing and it won't run and is extremly hard to pull over.Rip your arm off.New plug,cdi,cleaned carb,new filter and now i'm into timing.Somthing is just not right with the timing.lined it up at flywheel to t.lined top dot off cam gear.The flywheel seems to want to roll back by its self with plug out and valve adjusters backed way off. when i set the valve lash with the marks lined up top and holding flywheel mark lined up at .002 and start to turn the flywheel they become really lose,lick .0120 lose.Thanks for any help this got me good.

 

It;s not flooding.Just extremly hard to pull over..doesn't sit top dead center ,wants to go past top dead center or back 1/4 inch.Anything would help.Motor done?

 

Anyone have any ideas???Is normally hard to get any help on this site???

 

If it has no decompression system it will be hard to pull over.

My 1987 250 Yamaha moto4 was much, much harder to pull over then my 500 Sportsman.

Good news is you must have great compression.

 

Got timing and valves set right now. found bad ground,spark is nice and bright now but it won't fire even with putting gas down carb.Is it possiable to put the cdi 180 out??and not run.Got lots spark ,lots compression 140 psi and its not leaking.what now??? Thanks for any help

 

Fiche Parts

 

Checkout this photo an find item #3 decompression cable an all the other stuff that goes with decompression system does you atc have any of these parts?

 

It has lenkage arm on side of valve cover but cable and everthing else is missing.Not to worried about pulling it over as i can but won't fire.

 

Oh ok sorry your post says hard to pull start...Just trying to help

 

Fiche Parts