How do you replace the cam chain on a big red?

**Clioboy1200** · 05-10-2003, 01:16 PM

Just wondering, when im replacing the cam chain, which marks do I line up with what on the cogs and flywheel?

**Howdy** · 05-10-2003, 02:27 PM

what model big red? 82-84 or the 85-87 ?
Howdy

**Clioboy1200** · 05-12-2003, 10:00 AM

Its an 85 250es howdy. Im dyin to get it goin again!

**Dirtcrasher** · 05-12-2003, 10:21 AM

Man, I was just playing with that same engine yesterday!

I'm not near my manual but something on the flywheel points to a T and it's on a compression stroke with the cam at 12:00 etc.... Yes I'm useless, sorry need my book!!! Ya gotta know ho to do the tensioner also.

Man those chains are tough and self adjusting tensioner, I wonder if they ever break unless they run out of oil!!

**Clioboy1200** · 05-12-2003, 10:24 AM

I was thinkin that same thing, them chains must be indestructible. I can tension the chain no probs I hope, wll ya post the info when you get it??

**Clioboy1200** · 05-14-2003, 09:25 AM

please?

**Clioboy1200** · 05-20-2003, 05:18 AM

Please could somebody answer me on this topic. I could have the bike going again if I only knew how to do this!! please please please please please

**jeswinehart** · 05-20-2003, 06:55 AM

i'll send you some info tonight after work Clioboy1200, if you haven't already gotten it by then.

john

**Clioboy1200** · 05-20-2003, 07:05 AM

that'd be great jes. Its all I need to do to get her going, maybe get some riding pics up once she is sorted. thanx

**broook** · 05-20-2003, 07:33 AM

Line up the T mark on the flywheel with the mark on the cover.
Then from the same side of the trike line up the cam gear with the two center punch marks parrallel to the head.
Then bolt up your cam to it.
The crank turns twice to the cams once so it doesn`t matter about cam position as long as the sprocket lines up.
After everything is tight, recheck to see if everything lines up again befor you put everything else back together.

Your cam chain tensioner should have about 3/8"inch tension on it if your chain is in good shape. If you can replace the tensioner without useing the small internal adjuster your chain needs replacing as it has no tension on it.

Nothing to it after the first time.

Bob Brook
Newfoundland.
2 86 big reds.

**Clioboy1200** · 05-20-2003, 12:19 PM

many thankx, Ill be workin on it next week!

**jeswinehart** · 05-20-2003, 10:03 PM

hey Clioboy1200, e-mail your e-mail address so i can send this 5 pages of info to you with out shinking them down.
you'll be better able to read too.

jeswinehart@hotmail.com

thanks,,,, john

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How do you replace the cam chain on a big red?

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