When my yz 125 if in its stand and the rear tyre if off of the ground and i lift the swing arm up there is about a inch to an 2 inch before the suspention resists. the spring and actual suspention is fine it isnt loose im wondering if its the bearings or mibby even the suspention needs re-gassed, but ive only ever noticed it lately when i made the suspention harder because it was sitting to low for my weight.
what do you thing the problem is? and what could be the worst to happen when im using the bike? i take the bike to a track every couple of weeks and hit jumps ect ? thanks for all your help.Ryan Dundas
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Re: play in my rear suspention
Sounds normal to me. There won't be much resistance in the rear unloaded. As long as the ride height is good, and it doesn't sag too much with you on it, it should be fine. If it sags too much, the spring is shot, and you probably need a new shock.
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measure the free space between the swing arm and the tyre , this will tell you how much space is left to play with and also check the space between the chain and the tyre ! wider rear tyre may need a wider front tyre as it will affect the steering ! P...
If there is no main stand on your motorbike it can be a problem sometimes, not only do side stands dig into soft ground & warm tarmac they also make it awkward to oil the drive chain !
A simple way around this is to get either :- A piece of strong piece of wood about an inch square ( or in diameter) or A strong hammer or mallet or A small trolley jack handle or similar preferably with rubber or taped ends
Whatever you use it must be about an inch (or more) longer than from the ground to the right hand end of the rear spindle (axle) or underside of the right hand swinging arm, WHILE THE BIKE LEANS on its side stand: For the very few bikes that have a side stand on the right, read left hand end of rear spindle
All you have to do is raise the rear wheel slightly by pivoting the weight of the bike on its front wheel & side stand
On medium to large bikes this means getting someone else to position themself on the side stand side of the bike, where they should put 1 foot against the side stand & reach over the bike to grab a good purchase point near the rear wheel, grab the nearest handlebar end with the other hand & pivot the bike forwards on its front wheel & side stand This will lift the rear wheel a few inches so that your prop can be placed upright between the ground & your selected point on the bike
Spin the rear wheel by hand whilst applying non fling chain lubrication to both edges of your bikes chain
SIMPLE EFFECTIVE NO NEED TO CARRY A PADDOCK STAND IN YOUR RUCKSACK
Ride safe Bike-Doc
I hope this helps (if so give good feedback please)
If you look at the sidewalls of the tyres, you should see the recomended pressures.
Often motorcycles have a sticker either on the rear swing arm with the recommended pressures, or behind the side covers either left or right. Some times it is under the seat. I would look at the tyres though.
Position bike on center stand or lift so it is upright and stable with rear wheel off the ground.
Disconnect rear brake linkage, unbolt and remove axle from hub, brake drum and final drive. pay attention to where the spacers and washers are...Pull wheel out of final drive knuckles, roll tire forward a couple inches to clear swing arm then out from under fender. Good luck, i hope this helps.
Yamaha YZ 426 F
Cross / motocross
71.6 out of 100
Engine and transmission
426.00 ccm (25.99 cubic inches)
Single cylinder, four-stroke
Bore x stroke:
95.0 x 60.1 mm (3.7 x 2.4 inches)
Valves per cylinder:
Chassis, suspension, brakes and wheels
300 mm (11.8 inches)
Rear suspension travel:
315 mm (12.4 inches)
Front tyre dimensions:
Rear tyre dimensions:
Front brakes diameter:
250 mm (9.8 inches)
Rear brakes diameter:
240 mm (9.4 inches)
Physical measures and capacities
105.0 kg (231.5 pounds)
998 mm (39.3 inches) If adjustable, lowest setting.
1,303 mm (51.3 inches)
2,171 mm (85.5 inches)
827 mm (32.6 inches)
375 mm (14.8 inches)
1,490 mm (58.7 inches)
Simple task, get the bike up on a stand so the back wheel is off the ground. Loosen the rear wheel nut (big 21/22mm nut attached to the spindle that goes through the wheel hub) not too much, just enough that the wheel will move when you adjust the adjusters. Now, on either side of the swing arm you will see a bolt, with a lock nut, running from inside the swing arm, onto the axel block, which the spindle goes through. Adjust these either out or in, depending on whether you need to loosen or tighten the chain. If loosening the chain, you might want to give the rear tyre a kick forwards to move it in (after you have loosened the adjusters inwards). So thats how you do it, simple. The chain should have no more than half an inch movement up and down after adjustment. Lock the adjusters in place using the lock nut, then tighten the big wheel nut up, job done.
Honda XL 125R Paris Dakar
Air cooled, four stroke, single cylinder, OHC, 2 valves per cylinder
Bore x Stroke
56.5 x 49.5 mm
Ignition / Starting
CDI / kick
12 hp 8.7 kW @ 9000 rpm
10 Nm @ 8000 rpm
Transmission / Drive
6 Speed / chain
the retail value in good condition is approx $1,500. meaning it looks good, runs good, good tires, breaks,chain and sprokets. but with the extras you have and the after market up grades, i would start with a little higher price.