Planet Minis

hotrob9193 · 04-29-2008, 06:00 PM

i have a xr70 with a loose timing chain
could some one please call me and help me right quick
330 639 5157
it will be fine and then when the piston comes around the chain loosens.

firepower354 · 04-29-2008, 08:15 PM

Running? It will fill with oil on it's own, but you can lay it on the right side and fill the oil cavity through the 6mm hole/10mm head below the stator cover.

BigBoreCRF · 04-29-2008, 08:31 PM

Did something happen to the tensioner?

hotrob9193 · 04-29-2008, 09:00 PM

not that i know of why?

BigBoreCRF · 04-29-2008, 09:17 PM

I can't think of any other reason it would go loose, unless it was extremely worn out. Or maybe if something happened to the plastic roller in the side of the cylinder.

hotrob9193 · 04-29-2008, 09:19 PM

like it is tight then like it gets looser as it cranks then gets tight and keeps doin it.

firepower354 · 04-29-2008, 09:23 PM

This is in a previously smooth running engine? Nothing new done, it just started slapping?

hotrob9193 · 04-29-2008, 09:44 PM

it ran perfect ttok the top end off to check the rings and ever since it has been doin it wont even start now.

firepower354 · 04-29-2008, 09:47 PM

I'd pull the ignition to verify everything's working and in the right spot. You tried filling the tensioner through the side hole using an oilcan? Sure the cam timing's right?

mxracer49 · 07-25-2008, 08:25 AM

Did you resolve this? If so, how? My kids bike is doing the same exact thing.

firepower354 · 07-25-2008, 07:34 PM

Pre-fill the tensioner.

76CR125ME · 07-28-2008, 07:56 AM

can I pre-fill before putting stator back on?
(with the motor on its side on the bench of course)
how much oil would you use for this?

04-29-2008, 06:00 PM	#1 (permalink)
hotrob9193 1st Gear Member Join Date: Dec 2007 Location: canton ohio Posts: 172	loose timing chain xr70 please help!! i have a xr70 with a loose timing chain could some one please call me and help me right quick 330 639 5157 it will be fine and then when the piston comes around the chain loosens.

04-29-2008, 08:15 PM	#2 (permalink)
firepower354 3rd Gear Member Join Date: Oct 2006 Location: Flint MI Posts: 6,255	Re: loose timing chain xr70 please help!! Running? It will fill with oil on it's own, but you can lay it on the right side and fill the oil cavity through the 6mm hole/10mm head below the stator cover.

04-29-2008, 08:31 PM	#3 (permalink)
BigBoreCRF PM Newbie Join Date: Feb 2005 Location: Bloomington, IL Posts: 90	Re: loose timing chain xr70 please help!! Did something happen to the tensioner?

04-29-2008, 09:00 PM	#4 (permalink)
hotrob9193 1st Gear Member Join Date: Dec 2007 Location: canton ohio Posts: 172	Re: loose timing chain xr70 please help!! not that i know of why?

04-29-2008, 09:17 PM	#5 (permalink)
BigBoreCRF PM Newbie Join Date: Feb 2005 Location: Bloomington, IL Posts: 90	Re: loose timing chain xr70 please help!! I can't think of any other reason it would go loose, unless it was extremely worn out. Or maybe if something happened to the plastic roller in the side of the cylinder.

04-29-2008, 09:19 PM	#6 (permalink)
hotrob9193 1st Gear Member Join Date: Dec 2007 Location: canton ohio Posts: 172	Re: loose timing chain xr70 please help!! like it is tight then like it gets looser as it cranks then gets tight and keeps doin it.

04-29-2008, 09:23 PM	#7 (permalink)
firepower354 3rd Gear Member Join Date: Oct 2006 Location: Flint MI Posts: 6,255	Re: loose timing chain xr70 please help!! This is in a previously smooth running engine? Nothing new done, it just started slapping?

04-29-2008, 09:44 PM	#8 (permalink)
hotrob9193 1st Gear Member Join Date: Dec 2007 Location: canton ohio Posts: 172	Re: loose timing chain xr70 please help!! it ran perfect ttok the top end off to check the rings and ever since it has been doin it wont even start now.

04-29-2008, 09:47 PM	#9 (permalink)
firepower354 3rd Gear Member Join Date: Oct 2006 Location: Flint MI Posts: 6,255	Re: loose timing chain xr70 please help!! I'd pull the ignition to verify everything's working and in the right spot. You tried filling the tensioner through the side hole using an oilcan? Sure the cam timing's right?

07-25-2008, 08:25 AM	#10 (permalink)
mxracer49 1st Gear Member Join Date: Oct 2007 Location: Kansas Posts: 111	Re: loose timing chain xr70 please help!! Did you resolve this? If so, how? My kids bike is doing the same exact thing.

07-25-2008, 07:34 PM	#11 (permalink)
firepower354 3rd Gear Member Join Date: Oct 2006 Location: Flint MI Posts: 6,255	Re: loose timing chain xr70 please help!! Pre-fill the tensioner.

07-28-2008, 07:56 AM	#12 (permalink)
76CR125ME 1st Gear Member Join Date: Apr 2008 Location: Syracuse NY Posts: 116	Re: loose timing chain xr70 please help!! can I pre-fill before putting stator back on? (with the motor on its side on the bench of course) how much oil would you use for this?

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