Checking The Coolant Level - Yamaha MTN850-A 2017 Service Manual

3. Remove:
• Main gallery bolt "1"
EWA12980
WARNING
The engine, muffler and engine oil are ex-
tremely hot.
4. Install:
• Pressure gauge "1"
• Oil pressure adapter H "2"
Pressure gauge
90890-03153
Pressure gauge
YU-03153
Oil pressure adapter H
90890-03139
1
5. Measure:
• Oil pressure
(at the following conditions)
Oil pressure
230.0 kPa/5000 r/min (2.30
kgf/cm²/5000 r/min, 33.4
psi/5000 r/min)
Out of specification  Check.
1
2
3-26
PERIODIC MAINTENANCE
Engine oil pressure
Below specification
Above specification
6. Install:
• Main gallery bolt
Main gallery bolt
8 N·m (0.8 kgf·m, 5.8 lb·ft)
EAS30811

CHECKING THE COOLANT LEVEL

1. Stand the vehicle on a level surface.
TIP
• Place the vehicle on a maintenance stand.
• Make sure the vehicle is upright.
2. Check:
• Coolant level
The coolant level should be between the
maximum level mark "a" and minimum level
mark "b".
Below the minimum level mark  Add the
recommended coolant to the proper level.
a
b
ECA21281
NOTICE
• Adding water instead of coolant dilutes the
antifreeze concentration of the coolant. If
water is used instead of coolant; check,
and if necessary, correct the antifreeze
concentration of the coolant.
• Use only distilled water. However, if dis-
tilled water is not available, soft water may
be used.
3. Start the engine, warm it up for several min-
utes, and then turn it off.
Possible causes
• Faulty oil pump
• Clogged oil filter
• Leaking oil passage
• Broken or damaged
oil seal
• Leaking oil passage
• Faulty oil filter
• Oil viscosity too high