Baja Motorsports WD400-U Operator's Manual - Manual (Page 64)

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FRONT AND REAR GEAR CASE LUBRICATION
To check front and rear gear case oil:
1. Place vehicle on level ground
2. Remove gear case fill cap.
3. Inspect oil level. Oil level should be up to
the brim of the hole.
4. If oil is low, add specified oil (SAE 80 API “G- 4
Hypoid gear oil)”.
5. Tighten fill cap to 23Nm (17ft.lb)
To change gear oil:
1. Place vehicle on level ground
2. Remove gear case cover.
3. Place container under gear case.
4. Remove fill cap.
5. Remove oil plug.
6. Let oil drain out completely
7. Install the drain plug and tighten to
23Nm (12.6 ft lb).
8. Install gear cover and tighten bolts
9. Add gear oil (SAE 80 API “G-4 Hypoid Gear
oil”) fill to brim of hole (approx. 3 oz)
10. Install fill cap and tighten to 23Nm
(17 ft lb.)
Drain plug
Gear cover
CAUTION
Failing to have the proper amount of gear oil in the front and rear
transfer case will damage your ATV.
Low or no gear oil will cause wear on the gears causing gears to seize.
Be sure to check for leaks in the gear case and keep oil up to the
prescribed level.
Front gear case fill cap
Rear gear case
fill cap