Branson 00 series Operator's Manual page 69

Transmission oil
Checking
Check the fluid level through the inspection window at the rear
side of the transmission compartment. The level should be
within sight through the inspection gauge. If the fluid level is
below the inspection holes(A), add fluid.
Change of fluid
Drain the fluid through the drain holes under the rear axle case
and rear axle housing. Supply the fluid through the filler hole
behind the hydraulic case.
*Transmission oil can be used for the hydraulic system and for
the power steering unit.
* Make sure to the genuine Branson transmission fluid.
Drain the oil when oil is warm but be
careful if oil is hot, there is a risk of
getting burnt.
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