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Iím Attempting to tighten the chain on my son scrambler 400 4x4 and I followed the procedure to the tee. But as I tighten the locking bolts I can watch the chain sag and become loose again??? Any ideas on what Iím doing wrong
Not sure of the particulars of a scrambler but I know I always
-compressed the rear suspension with a ratchet strap,
-adjust the chain to the tightness desired,
-tghten the swivel bolt.
-tighten the pivot point bolt
why the chain is moving while tightening?...hhhmmm...how old is the chain and sprockets? an old chain that could have stretched will really give ya fits when trying to tighten it as parts stretch and other parts don't.
I’m Attempting to tighten the chain on my son scrambler 400 4x4 and I followed the procedure to the tee. But as I tighten the locking bolts I can watch the chain sag and become loose again??? Any ideas on what I’m doing wrong
First does the chain have any side to side play,is it an older chain? can have trouble adjusting if it is.Whats really happening as you tighten the rear axle housing, it has a habit of twisting forward slightly which ends up loosening the chain. You can always tighten just a little more than needed, then tighten bolts on housing. should end up with where you intended. I always adjusted to where chain had about 1/2-3/4" slack at middle of chain at top of swing arm. I Didn't go by how the old manuals still said to collapse rear end and adjust,chain would end up being way too loose!(engineers agreed with me on this matter,this was used before the swing arms were re designed to lessen stress on chain,the front sprocket and swing arm pivot bolt are in line with each other which causes less chain flex from swing arm) Also jack up machine and turn rear tires and see if you have any hi or low spots in chain. If so maybe time to replace. OPT
Retired and loving it! (Main job now,wake up the wife to go to work!)
92 Honda Night Hawk 750 (5500 actual miles)
2000 Chevy Silverado 1500 Sport side (270,000 miles,semi retired)
Whats right is whats left after you do everything else wrong (Robin Williams) RIP
Don't pick a fight with an old man,if he can't fight he'll just shoot ya!
I dont do it by the book either, they were all too loose, on the rear I use a large pair of channel locks and tighten till chain is :snug maybe 1/2 inch of slack, then tighten bolts, as stated you may need a new chain and sprockets
2009 850 xp sage green
2009 850 xp, stealth black, my sons
1997 425 magnum,500HO motor in it
2008 Dodge Ram 1500
1997 Dodge Ram 1500
with a good quality chain on con-centric drive model, adjustment is very rare. compared to the old ones.
I have had much better luck running something like a Rk x-ring chain with oversize pins, than the bottom of the barrel DID o-ring chain my dealer sells. DID makes better ones as well.