length YAMAHA YFZ450 2007 Owners Manual

8-36
1
2
3
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78
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should be performed by a Yamaha dealer.
EBU24710
Adjusting the parking brake free play
The parking brake free play must be checked and,
if necessary, adjusted at the intervals specified in
the periodic maintenance and lubrication chart.
Cable length “A” should measure 47–51 mm (1.9–
2.0 in). Adjust the parking brake free play as fol-
lows.
1. Release the parking brake by moving theparking brake lever to the right.
2. Fully loosen the locknut and the adjusting bolt
at the rear brake caliper.
3. Loosen the locknut on the brake cable.
4. Turn the adjusting nut on the brake cable in di-
rection (a) to increase the cable length, and in
direction (b) to decrease it.
NOTE:

If the cable length cannot be adjusted to specifica-
tion, consult a Yamaha dealer.
5. Tighten the locknut on the brake cable.
1. Adjusting bolt
2. Cable length “A”
3. Locknut
2
3
1

1. Locknut
2. Adjusting nut
(a)
(b)
12

8-40
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2
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78
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10
11

3. If the drive chain slack is incorrect, adjust it as
follows.
To adjust the drive chain slack
1. Loosen the rear axle pinch bolts.
2. Insert a rod of a diameter of 8 mm and a
length of 10 cm into one of the holes in the
drive chain tensioner as shown.NOTE:

A rod can be obtained at a Yamaha dealer to make
this adjustment.
3. Shift the transmission into neutral.
4. To tighten the drive chain, push the ATV back-
ward. To loosen the drive chain, push the ATV
forward.
1. Drive chain slack
1

1. Rear wheel axle pinch bolt
2. Rod
3. Drive chain tensioner
4. Hole
3
4
2
1
1

10-1
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EBU25960
SPECIFICATIONS
EBU25975
Dimensions:
Overall length:
1840 mm (72.4 in)
Overall width:
1170 mm (46.1 in)
Overall height:
1090 mm (42.9 in)
Seat height:
810 mm (31.9 in)
Wheelbase:
1280 mm (50.4 in)
Ground clearance:
255 mm (10.0 in)
Minimum turning radius:
3500 mm (138 in)
Weight:
With oil and fuel:
169.0 kg (373 lb)
Engine:
Engine type:
Liquid cooled 4-stroke, DOHC
Cylinder arrangement:
Forward-inclined single cylinder
Displacement:
449.0 cm
3

(27.40 cu.in)
Bore
×
stroke:
95.0
×
63.4 mm (3.74
×
2.50 in)Compression ratio:
11.40 :1
Starting system:
Electric starter
Lubrication system:
Dry sump

Engine oil:
Type:
SAE5W30 or SAE10W30 or SAE10W40 or SAE15W40
or SAE20W40 or SAE20W50
Recommended engine oil grade:
API service SE, SF, SG type or higher
-20˚-10˚0˚
10˚20˚30˚40˚50˚C
10W/30
15W/4020W/4020W/50
10W/40
5W/30