SAB Heli Division Goblin 700 Manual page 26

Box 3, Bag for page 25
NOTE:
Loosen all of the M3x8mm screws. Using a 5/6mm
shaft, you can tension the engine belt.
Page 25
ENGINE UNIT ASSEMBLY
Socket Head Cap
Screw M4x10mm
(HC102-S)
Socket Head Cap
Screw M4x15mm
(HC103-S)
Washer
4.3x 11x1mm
(HC184-S)