I have a Kazuma 110 that i bought used . the engine ran great but the clutch was fried. so i ordered the new pads and installed them,now for some reason I cant get the thing to start. it has fuel fire,fuses are good,batt has full charge. like i said it would start right up and run great before i installed the pads,what could have changed?any help will be greatly appreciated.

 

nothing should have changed, if all you did was to remove the right side engine cover and removed the clutch, then replaced the clutch disks.if the engine turns over sounds like you could have knock off a wire somewhere,if it doesn't turn over then go back and remove the clutch assy and put it back right. if the engine does turn over the first thing you need to check for is a spark, if ingnition ok, then make sure you have fuel flow,just unscrew the float bowl drain screw to check this. now if both ignition and you have fuel flow, adjust the valves.

 

Well Ipulled the plug and it has pretty strong fire, even shocked myself testing it, bowl is full of fuel. Engine turns over at a good rate,just doesnt fire at all.Could you tell me how to go about adjusting the valves. That's a new one for me. Im pretty mechanically inclined but with quads I dont have alot of experience. cant be hard though. thanks in advance

 

to adjust valves on all 50-110cc chinese atv's.

remove valve covers

remove the left side flywheel nut cover, this is a small cover on the left side of the engine the size of a silver dollar or it might be oval depending on the engine manufacture, if it round then it's slotted or if it oval then 4 8mm bolts hold it on.

remove flywheel timing cover, this is on the left size on top of the engine cover, should be slotted and size of a nickel.

turn the flywheel counterclock wise while watching the intake valve open and then close, just as it closes look into the timing cover and watch the flywheel rotate their is couple of timing marks on the flywheel, the one you're looking for is the line that has a "T" on on the bottom, this line should be in the center of hole.

manual says .004 both valves, but adjusting the exhaust valve at .006 makes it so you won't haft to adjust the valves as often and seems to make the engine start easier when the engine hot, so you decide what clearance to use,

INTAKE VALVE, top of engine
loosen the lock nut, using a .004 feeler gage insert between valve and rocker arm. adjust intake valve .004 clearance, after adjusting the valve and tightening the locknut then recheck the clearance, use a .005 feeler gage, it should not go in, then use a .004 gage and that should slide in, if it doesn't readjust the valve

EXHAUST VALVE, bottom of engine
next, do the exhaust valve the same way except the clearance use a .006 feeler gage


reinstall all covers

 

thanks mechanic, Ive never adjusted valves but I think with your short tutorial it should be pretty smooth. Ill give it a shot today,reply my achievments or failures.lol

 

Just don't see why all of a sudden the valves would be causing his problem. If it ran and started fine before the clutch change out it should not be the valves and adjusting the valves incorrectly could just make the problem worse could it not?

I would close the fuel valve, drain the carb bowl, give it a shot of starting fluid at the air filter just to see if it fires. If it fires then it's a Fuel problem and possibly a dirty carb.

 

ok so where exactly do I slide the feeler guage? there doesnt seem to be enough room to even get the right angle to slide it in there.

 

ok well answered my own question on where to slide the feeler, Got it to start but the valves are chattering so I need to adjust a little more. Also the clutch is not right gotta play with it a little too. as soon as its click into gear it is engaged and kills the engine. so I know it needs to be adjusted also, just waiting for it to cool back down now.

 

Just wanted to shoot a thankyou to you Mechanic for the tutorial on the valve adjustment. I had read that this was a common problem with Kazuma Engines. just had no Idea how to do it. And you outofline I did use your advice on a smaller quad that had carb probs and not it is running like a top so thanks.