Yamaha YZ 2020 Series, Owner'S Service Manual

Page: 96 / 376

ENGINE
3-20
5. Check:
• Gasket “1”
Damage

Replace.
Refer to “ENGINE REMOVAL” on page 5-6.
6. Check:
• Tightening torques
7. Install:
•
Exhaust pipe protector
EAM30210
CHECKING THE COOLANT LEVEL
WARNING
EWA19070
If coolant seems hot, do not remove the radi-
ator cap.
1. Stand the vehicle upright on a level surface.
2. Remove:
• Radiator cap “1”
3. Check:
• Coolant level
Maximum level “a” or below

Add coolant
up to the maximum level.
NOTICE
ECA24260
• Adding water instead of coolant lowers the
antifreeze content. If, therefore, water is
used instead of coolant, check, and if nec-
essary, adjust the antifreeze concentration.
• Use only distilled water. However, if dis-
tilled water is not available, soft water may
be used.
4. Start the engine, warm this up for several
minutes, and then stop it.
5. Check:
•
Coolant level
TIP
Before checking the coolant level, wait a few
minutes until the coolant has settled.
Exhaust pipe nut “1”
10 N·m (1.0 kgf·m, 7.4 lb·ft)
Exhaust pipe clamp bolt “2”
12 N·m (1.2 kgf·m, 8.9 lb·ft)
Exhaust pipe clamp bolt “3”
12 N·m (1.2 kgf·m, 8.9 lb·ft)
Silencer bolt (rear) “4”
30 N·m (3.0 kgf·m, 22 lb·ft)
Exhaust pipe protector screw
10 N·m (1.0 kgf·m, 7.4 lb·ft)
LOCTITE®
1
1
T
R
.
.
1 1
2 2
4
3
T
R
.
.
1. Radiator
1 1