Rebuild motor wrong - flywheel spins freely in direction of arrow

[Jamies Winkler]

Trying to figure out what I missed here.  My starter spins freely after rebuilding the engine - new crank, bigbore.  Everything is back together but when 'cranking' it over, the starter just spins free.  I took off the starter cover held on by 3 phillips head bolts (fig 1 &3 ) and held on to the bushing on the starter gear train- directly located behind starter cover.  This set of gears turned freely.  So my starter teeth and sprocket teeth are not at fault.  Next I turned the idler sprocket between this sprocket and the flywheel and this idler would turn freely clockwise but not rotate by hand counterclockwise CCW.  Figure 3 - bottom center.

 

I followed a thread on here of someone who had the same or similar symptoms.  Following advice given to that poster, I removed the idler gear adjacent to flywheel and attempted to spin flywheel. 

This I can do in a clockwise direction but CCW provides much resistance.  According to the arrow indicating the direction flywheel is suppose to turn (figure 2 bottom center) when running, I have something backwards.

 

Anyone follow?  What could I have done wrong here?  Thank you

 

[ohiodrz400sm]

You installed the bearing as shown ?

[Jamies Winkler]

Got to open her up again tomorrow to see.  I cant for the life of me remember a bearing and flange getting removed from between the flywheel and rotor.  

[jjktmrider]

You put the squirrel in it's cage backwards , poor thing .

 

It sounds like the sprag is put in backwards . The motor runs CCW , if I'm not having a brain seizure this morning , is that the way your figuring it runs ?

 

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Edited April 4, 2017 by jjktmrider

[Jamies Winkler]

Not 100 percent, but if that arrow on the rotor indicates motor direction to run, then it ought to drive going CW.  I put the squirrel in wrong.  I think i can get it turned around today.

 

[RAE129]

Did you put the key gear in? This key positions the flywheel on the crankshaft properly.  You have to put it on before putting the flywheel on.  It is Item #17 on the Crankshaft Part Schematic.

[RAE129]

The key goes in that slot.

[Jamies Winkler]

Whoops, howdy yeah keys in there.  The bearing was in backwards- the bearing behind the flywheel as jjktmrider suggested i mightve done.  Its cranking the right way now.  Flooded the engine baad with cranking it so got the carb sonicated at a good shop here.  Put together and still not firing up.  I did see spark in daylight.  

One concern the shop had was my carb rebuild kit- mikuni apparently only sells their parts individually and should have an insignia on them.  Mine were all made in taiwan or china so i cant be certain of the specs of the jets and needles.  Any thoughts on the knock off kits?  

 

 

 

[jjktmrider]

What brand was it ?  I know DJ is sized different than Kiehin  jet so their numbers will be different than oem but IIRC Mikuni should line up .

 

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