Tightening torque Kubota D650 | D750 | Zen-noh | Bobcat
General information on the tightening torques of all Kubota engines as an example the head bolts etc.
An important rule is that the head bolts must first be oiled, on which the correct NM can then be measured with the torque wrench. This means first cleaning the head bolts with a wire brush and then dipping them in oil. Drain this so that it cannot affect the tightening torque.
Adjustment of all Kubota D650 and D750 engines:
Valve clearance when the engine is cold:
- 0.15 – 0.19 mm
- .008 inch
Head studs or bolts:
- 29.0 to 32 FT-LBS
Main bearing bolt
- Bolt 1 15.0 to 17 FT-LBS
- Bolt case 22.0 to 25 FT-LBS
Flywheel bolts
- 36 to 40ft-lbs
Glow plug:
- 15 to 18 FT-LBS(D650) + 29 to 36 FT-LBS(D750)
Matching models to this engine
D750
Kubota
- B1200, B5200, B7001, B7100
- B7100HST-DT
- 220, 320 excavator
Bobcat
- X220, X320
Zen Noh
- ZB1200, ZB5200, ZB7001, ZB7100
Bobcat
- Bobcat 453C, 443
Diameter:
- 68mm
Kubota engine
- D750, D750-B, D750-A
D650
Kubota
- B6100, B6001
Zen Noh
- ZB6001, ZB6100
Kubota engine
- D650
