suspension YAMAHA YFM250R 2010 Owners Manual

4-13
4Adjust the spring preload as follows.
Turn the spring preload adjusting ring in direction
(a) to increase the spring preload and thereby
harden the suspension, and in direction (b) to de-
crease the spring preload and thereby soften the
suspension.
TIPA special wrench can be obtained at a Yamaha
dealer to make this adjustment.
EBU28242Adjusting the rear shock absorber as-
sembly The spring preload can be adjusted to suit the rid-
er’s weight and the riding conditions.NOTICEECB00090Never turn an adjusting mechanism beyond
the minimum and maximum settings.Adjust the spring preload as follows.
1. Loosen the locknut.
2. Turn the spring preload adjusting nut in direc-
tion (a) to increase the spring preload and
thereby harden the suspension, and in direc-
tion (b) to decrease the spring preload and
thereby soften the suspension.
1. Spring preload adjusting ring
2. Special wrench
3. Position indicator
(a)
(b)1
2
3
1
2
3
4
5
3
Spring preload setting:
Minimum (soft):
1
Standard:
2
Maximum (hard):
5
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10-4
10
Recommended fluid:
DOT 4Rear brake:Type:
Single disc brake
Operation:
Right foot operation
Recommended fluid:
DOT 4Front suspension:Type:
Double wishbone
Spring/shock absorber type:
Coil spring/oil damper
Wheel travel:
190 mm (7.5 in)Rear suspension:Type:
Swingarm
Spring/shock absorber type:
Coil spring/gas-oil damper
Wheel travel:
200 mm (7.9 in)Electrical system:Ignition system:
DC. CDI
Charging system:
AC magnetoBattery:Model:
YTZ7SVoltage, capacity:
12 V, 6.0 Ah
Headlight:Bulb type:
Krypton bulbBulb voltage, wattage × quantity:Headlight:
12 V, 30/30 W × 2
Tail/brake light:
12 V, 5.0/21.0 W × 1
Neutral indicator light:
12 V, 1.7 W × 1Fuse:Fuse:
15.0 A
U1BT60E0.book Page 4 Wednesday, April 15, 2009 1:13 PM

Maintenance and lubrication chart ................................. 8-5
Maintenance chart, emission control system ................. 8-3
Model label ................................................................... 11-2NNeutral indicator light ..................................................... 4-2OOwner’s manual and tool kit ........................................... 8-1PParking ........................................................................... 6-5
Parking brake free play, adjusting ................................ 8-26
Parking brake lever ........................................................ 4-6
Parking on a slope ......................................................... 6-5
Part locations ................................................................. 3-1RRiding your ATV ............................................................. 7-1SSafety information .......................................................... 2-1
Seat .............................................................................. 4-11
Shifting ........................................................................... 6-3
Shift pedal ...................................................................... 4-7
Shift pedal, checking .................................................... 8-33
Shock absorber assemblies, adjusting the front .......... 4-12
Shock absorber assembly, adjusting the rear .............. 4-13
Spark arrester, cleaning ............................................... 8-17
Spark plug, checking ...................................................... 8-8
Specifications ............................................................... 10-1
Speed limiter .................................................................. 4-4
Starter (choke) ............................................................. 4-11
Start switch .................................................................... 4-3
Steering shaft, lubricating ............................................ 8-35
Storage .......................................................................... 9-2Suspension, lubricating the upper and lower arm
pivots ......................................................................... 8-34
Swingarm pivots, lubricating ........................................ 8-33
TTail/brake light bulb, replacing ..................................... 8-41
Throttle cable free play, adjusting ................................ 8-21
Throttle lever ........................................................... 4-3, 5-3
Tires ............................................................................... 5-4
Troubleshooting ........................................................... 8-43
Troubleshooting chart .................................................. 8-44VValve clearance ........................................................... 8-21
Vehicle identification number ....................................... 11-1WWheel hub bearings, checking ..................................... 8-33
Wheel, installing ........................................................... 8-42
Wheel, removing .......................................................... 8-41
U1BT60E0.book Page 2 Wednesday, April 15, 2009 1:13 PM