Yamaha YXZ 1000R 2021 Owner's Manual page 151

TIP
If genuine Yamaha coolant is not available,
use an ethylene glycol antifreeze containing
corrosion inhibitors for aluminum engines and
mix with distilled water at a 1:1 ratio.
ECB02190
NOTICE
Mix antifreeze with distilled water only.
However, if distilled water is not available,
soft water may be used for refilling. Do not
use hard water or salt water since they are
harmful to the engine.
To check the coolant level
1. Park the vehicle on a level surface.
2. Wait for the engine to cool for an accurate
reading.
3. Look at the coolant level in the coolant
reservoir.
1. Maximum level mark
2. Minimum level mark
4. If the coolant is at or below the minimum
level mark, remove panel C. (See page
9-10.)
5. Remove the coolant reservoir cap, add
coolant up to the maximum level mark,
and then install the cap. NOTICE: If cool-
ant is not available, use distilled water
or soft tap water instead. Do not use
hard water or salt water since they are
harmful to the engine. If water has
been used instead of coolant, replace
9-35
1
2
9