I have a 2000 bombardier and it has a very hard time cold starting i have been push starting after the engine warms up it starts very easily can any one help?[img]i/expressions/face-icon-small-sad.gif[/img]

 

sounds like your cams/valves are too tight and need to be reshimmed.

 

also check your pilot jet. if stock carb from stock 2000 DS650 the carb is setup too lean at idle. the motor needs enrichment when cold.

 

I second scooby's advise. RUSS[img]i/expressions/face-icon-small-smile.gif[/img]

 

Might also be a weak battery.

 

I second the weak battery. If my battery was down a little bit, it would crank and crank. With a full charge, it would hardly make 2 revolutions before firing. The valve check couldn't hurt at all either.

 

all of the above,

you definitely need to keep the valves in check as with any 4-stroke because the valve gap decreases over time until ultimately one or more valves are not fully closing

and again true on the pilot, I upped my '01 pilot jet to a 45 from the 40 it came with and tweeked the idle mixture screw to boot.

a bomb, and alot of other quads too, cannot run with a dead battery cause the stator needs juice to excite the field coil, and a poor battery makes for poor running so if its old and doesn't hold charge it can be a problem.

 

Where can you get the larger pilot jet ? Does the bomb dealer carry them ,I don't suppose you could remember the part # ? I know, it's alot to ask?

 

Check your spark plugs, if they are dark it makes for hard starting too.