2000 600 hard start after piston and ring r&r

burnt toast

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This one has got me baffled. Purchased on line manual. 2000 600 grizzly was burning oil bad (smoking). Started and ran fine. Tore down, cylinder glazed still well within spec. Honed cylinder stayed stock size piston, ring gap within spec. Noticed timing chain was stretched r&r as well. No gaskets or seals were reused. Set valves. On first start up it was hard starting, eventually did start up and ran like a top once it was warm and took it for a burn ran good started good, figured perfect! Sat in the garage a couple weeks I started it here and there firing right up. Go to load it a couple days before taking back to my father in law, again hard starting wants to fire fight with it eventually it starts once it is warm starts like a champ, now I'm thinking something isn't right. Pull it back in the garage go through it double checking the compression, valve set, has good spark, getting fuel, I'm kind of at a lose. Now i really have to fight with it to start, checked the carb out (choke circuit) all good. When it does start it runs perfect just a bi-ch to start. Checked the pulse coil 488ohms so it should be good. Any suggestions. The only thing I haven't done is a new plug but I don't think that is the problem, I drained the rank and it has new fuel no difference. Any suggestion or has anyone ran into this? Thanks
 

leonard

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I hate to tell you this but something is probably off with your decompression pins/lineup.
it attaches at the end of your cam - you need to make sure its correct with the cam and not 180* out .

It needs to be set so the valves are slightly open until the motor fires up .. then the cam spins fast enough for the weights to adjust it so the pins pop back in letting the valves close.

man i suck at explaining things. but if you have the manual look at that specific thing.


And i just realized how old this post is haha. man and still on the 1st page.. in summer!
 
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