Husqvarna PT-26D Operator's Manual page 118

Lubrication
7. The power take-off shaft's rear support bearing
Lubricate using a grease gun until grease is forced out.
8. Engine Oil
Viscosity and quality
Use engine oil viscosity as illustrated, class API CH4
or ACEA E5 or higher.
The engine holds 2.5 litres of oil excluding the filter
(including filter 2.7 litres).
116
The power take-off shaft's rear support bearing
0W
5W 20
10W 30
-30 -20 -10 0 10
-22 -4 -14 32 50
Viscosity chart
8043-020
15W 40
20W 50
20
30
40
20 30 40 50 C
68 86 104 122 F
8043-029