How do you adjust chain - Huffy 26 in. Cranbrook Cruiser Bike

the timing chain is adjusted by an oil pump chain tensioner and is to be renewed at each chain replacement. from this it is hydraulic adjustment and is automatic and does not require manual tensioning

the adjustment of the timing chain is hydraulic and self adjust to maintain correct chain tension. IF the mileage indicates that the chain may need replacing then these adjusters have to be compressed and pinned before chain removal . Check that any noise is not coming from valve rocker gear which wears out before most chains

These are the instructions for adjusting the chain. They are taken directly from the manual available at http://ep.yimg.com/ty/cdn/razorama/e100e200e300manual.pdf

To adjust the chain:
1. Loosen the axle
2. Loosen the brake anchor (this is attached with the small bolt in the long slot on the left side of the rear fork)
3. Tighten the tension adjusters on the axle 1/8 to 1/4 turn to tension the chain. Tighten both adjusters the exact same amount to maintain the wheel alignment.
Note: this system of adjusters is common to motorcycles and BMX
bicycles so I your are not familiar with it, if you know anyone who is,
they would not have a problem adjusting it for you.
Chain tension: The chain should be "just not-quite snug" in other
words, not taut or sloppy loose. BE CAREFUL NOT TO ADJUST TOO TIGHT. The tensioning system can easily impart too much tension and snap the chain or bend the motor output shaft. Turn the adjusters 1/8 to 1/4 turn at a time and recheck the tension each time.
4. Once the tension is good, tighten the axle and brake anchor bolt. Test run the scooter. Readjust as needed.

Properly tensioned new chains will require readjustment after a short 'break-in' period as they stretch. Some, improperly tensioned chains have long spots in them and they are difficult to properly adjust. All chains have a difficult life - even properly adjusted - properly lubricated - properly used (not abused). With a proper load (your weight) you should have about 3/4 inch play midway between the front and rear sprocket if your chain is properly adjusted. When properly adjusted and properly tightened, your chain should be checked weekly until you see no difference in the 3/4 inch. After that you should check the adjustment monthly throughout the life of the chain.

Instructions

1. • 1 Measure the chain's tension with a ruler. Move the center point of the bottom half of the drive chain with your hand. Take a measurement of the chain's movement as you push the chain up and down as far as it will go. The chain should have a free range of movement between 0.8 to 1.2 inches. If the chain's free range is greater than 1.2 inches, you need to tighten the chain. Alternatively, loosen the chain if it has less than 0.8 inches of free movement.
     
   • 2 Loosen the large nut on the left side of the rear axle with a 32 mm socket and a socket wrench. If more leverage is needed to loosen the nut, use a long-handled breaker bar.
     
   • 3 Loosen the chain adjuster blocks on both side of the rear swing arm with a pair of 10 mm wrenches. Hold the blocks' adjustment bolt's head steady with one wrench and loosen the bolt's lock nut with the other wrench.
     
   • 4 Turn both adjustment bolts an equal number of turns with a 10 mm wrench to adjust the chain's tension. Turn the adjustment bolts clockwise to loosen the chain, or counterclockwise to tighten the chain. Check that the edge of both chain adjuster blocks are evenly aligned with the adjustment marks imprinted on the swing arm.
     
   • 5 Check the chain's range of free movement again. Make adjustments as needed until the chain has a free range of movement between 0.8 and 1.2 inches.
     
   • 6 Hold the adjustment bolts steady with a 10 mm wrench and tighten their lock nuts against the chain adjuster blocks with a second 10 mm wrench. Tighten the axle nut to 72.5 foot-pounds with a 32 mm socket and a torque wrench. Check the chain's tension again.
     

Between the chain bar and the body there is an adjusting screw, if the adjusting screw is stripped it will not pull on the chain bar to tighten the chain.
procedure for tightening chain. loosen the chain guard nuts, tighten the bar adjusting screw by turning to the right or clockwise, the chain has to roll freely around the bar but not bind. check with gloves or rag, don't use bare hands to avoid accidents. once chain is adjusted, tighten the chain guard nuts. good luck!

First, let's adjust the primary chain first. Remove the upper inspection hole cover. Stick your finger in the hole, find the chain, and raise and lower it. With the engine cold, the chain should have 3/8" to 1/2" up and down movement. To adjust this, look underneath the primary. You'll see a bolt and a lock nut. under the primary. Loosen the lock nut and turn the adjuster to adjust the tension in the chain. Adjusting the bolt upwards tightens the chain, lowering it loosens the chain. If you get the chain too tight, lower the chain until you get too much movement in it and then raise the adjuster again.

On the clutch, remove the clutch release mechanism cover. Remove the spring and the lock nut. Find the cable adjuster in the middle of the clutch cable. Move the cover up or down, break the lock nut, and adjust the cable adjuster inwards until you get a lot of slack in the cable. Turn the adjuster bolt at the relaese mechanism counterclockwise until it stops. Then turn it back clockwise 1/2 turn. Install the locknut and spring and cover. Go back and adjust the cable adjuster outwards until you have about an 1/8" freeplay. Lock the lock nut and replace the cover.

Good Luck
Steve

Loosen the axle nut and the lock nuts for the chain adjusters on each side of the swingarm. Turn the adjuster to move the rear wheel to the rear to tighten the chain.

You want to adjust the chain so that you have 1 inch up and down play in the chain. By this I mean 1/2" above center and 1/2" below center of the chain as it sits on the bike, 1" up and down inclusive. Adjustment should be made at the point where the chain is the tightest. Roll the rear wheel while checking the chain tension. Find the tightest point to make your adjustment.

Move both chain adjusters the same amount to keep wheel straight within the swingarm. Once adjusted, roll the wheel a couple of turns and check the adjustment of the chain again. Once finished, tighten adjuster lock nuts and retorque the axle nut to 50 foot pounds of torque.

Good Luck, Steve

There is an adjustment for the chain. There is a sproket that you can loosen and adjust. You should be able to get it from the outside of the machine. Should be a 1/2in or 9/16in nut.