Yamaha VIKING 2021 Owner's Manual page 115

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. Coolant reservoir cap
2. Maximum level mark
3. Minimum level mark
4. If the coolant is at or below the minimum
level mark, remove the coolant reservoir
cap and add coolant to the maximum lev-
el mark.
5. Install the reservoir cap.
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