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Chain wear and adjustment

Started by stroscoach, May 01, 2011, 09:36:14 AM

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stroscoach

Hey, How do I know if my chain needs replacement and how much slack should there be if properly adjusted   no idea when it was last replaced  have had the bike only a few months thanks

Yamifj1200

If your rear axle is at the most rearward section of the swingarm and the chain can be lifted up off the rear sprocket its most likely worn out. FJ's can be tough on chains and if you don't have a good chain to start with and take decent care of it they can wear out quickly. If your chain is shot its a good bet the sprockets are worn out as well. Its a good idea to replace a worn chain with a good quality replacement such as DID or EK x-ring chains. The stock sprockets are good quality and should never be replaced with aluminum aftermarket sprockets. Hope this helps..

Eric M


http://www.fjowners.com/index.php?topic=14833.0


"All unattended children will be served an espresso and given a puppy"

FJmonkey

From my Climer's manual
1. Place the bike on the center stand so the rear wheel turns freely.
2. Turn the rear wheel and check the chain for its tightest point. Mark this point. Turn the wheel to put the marked point in the lower run midway between sprockets.
3. With thumb and forefinger, lift up then press down the chain at the marked point, measure the total vertical distance.
4. The chain should not travel more than 0.6 to 0.8 inches (15-20 mm). Adjust chain as required.

And as Yamifj1200 said, if you are out of adjustment then your chain is shot, replace with a strong chain. Check sprockets for wear, replace with steel. Keep chain clean and lubed.

When cleaning your chain, check for tight links, another indicator of a worn/abused chain.
The glass is not half full, it was engineered with a 2X safety factor.

'86 Ambulance - Bent frame, cracked case, due for an overhaul
'89 Stormy Blue - Suits my Dark Side

Alf

If you have changed rods or shock or rim, the swingarm travel could be different as standard. With a help of another pair of hands, sit in your bike, main stand off, look for the tightest point and measure 15 mm of chain slack

Pat Conlon

Did you get a Owner's Manual when you got your '86?  There is a lot of important info. in this little book.
If not.....You can down load one free by going here: http://www.yamahaownershandbook.com.au/?r=0

Cheers!
1) Free Owners Manual download: https://tinyurl.com/fmsz7hk9
2) Don't store your FJ with E10 fuel https://tinyurl.com/3cjrfct5
3) Replace your old stock rubber brake lines.
4) Important items for the '84-87 FJ's:
Safety wire: https://tinyurl.com/99zp8ufh
Fuel line: https://tinyurl.com/bdff9bf3