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Head bolt torque for a yahama mz360 motor that powers a 6800 watt generator.

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Posted on Jan 02, 2017

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  • 4 Answers

SOURCE: head bolts torque settings

According to my haynes manual for G-S reg, 1989-1998 it goes as follows,
Stage 1:- Tighten all bolts by hand until bolt heads just contact cyl. head.
Stage 2:-Tighten all bolts to 40Nm or 30lb ft.
Stage 3:-Angle tighten all bolts a further 60 degrees.
Stage 4:-Angle tighten all bolts again a further 60 degrees.
Stage 5:- M12 x 140mm bolts ONLY angle tighten a further 20 degrees.
Hope this helps everyone, sorry it seems longwinded but that is how it's written in the manual.

Posted on Feb 07, 2009

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chuck943
  • 783 Answers

SOURCE: Head bolt torque specs needed for 96 tbird 3.8

Head bolts are torque to yeild so you MUST use new bolts.
Tighten cylinder head retaining bolts in numerical sequence in three steps as follows:

  1. 20 Nm (15 lb-ft).
  1. 40 Nm (30 lb-ft).
  1. 50 Nm (37 lb-ft)
Loosen retaining bolts one at a time two to three revolutions and retighten as follows:

Long bolts:
  • Tighten to 40-50 Nm (30-37 lb-ft).
  • Rotate an additional 175-185 degrees.
  • Go to next bolt in sequence.
Short Bolts:
  • Tighten to 20-30 Nm (15-22 lb-ft).
  • Rotate an additional 175-185 degrees.
  • Go to next bolt in sequence.
Here is a pic of the sequence
http://i253.photobucket.com/albums/hh43/chuck943/Headboltsequence38L.gif

Posted on Mar 19, 2009

polarcycle
  • 1392 Answers

SOURCE: head bolt torque spec

Always use new head bolts.
1)tighten to 40ft/lbs
2)back off 1/2 turn
3)tighten back to 40ft/lbs
4)tighten an additional 90 degrees
5)tighten an additional 90 degrees.

Posted on Aug 16, 2009

kirkx
  • 2019 Answers

SOURCE: whats the torque specs on a 2001 ford focus 2.0

You need to buy the manual, because you also need to know the order in which to torque them.
http://www.car-stuff.com/mmparts/ford-focus/repair_manual.html
usually you start at the middle and circle outward.
But they can differ. Some cars you always need to put in new head bolts. Others are done in several stages. This is too critical to take chances on.
If you really can't afford $19 for a manual, go to the library and xerox the pages.

Posted on Feb 09, 2010

ebjebs
  • 197 Answers

SOURCE: head bolt settings

1st - step; - 22 ft./lbs. 2nd - step; - 58 ft./lbs. 3rd - step, loosen all bolts completely; 4th - step; - 22 ft./lbs. 5th - step; - 54 ft./lbs.fig074.png

Posted on Feb 28, 2010

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What do head bolts torque at
Hi, Anonymous sorry you can't find the first and best tool you ever bought for your Yahama despair, not for a mere $10 you can download another one. For more information about your issue and valuable "FREE" downloads that you will need please visit the websites below. Good luck and have a nice day.
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http://mybikemanuals.com/yamaha/yamaha-fz-owners-manuals

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The generator kicked the breaker of and was smoking and smelled like electrical
What type of load (electrical) was hooked up to this generation?? If the surge voltage and current was exceeded above the generator maximum for any length of time. There problems, it could be the regulator, insulation burnt off the windings.


I am taking a guess here. Now, 7100 Watts is it typical surge wattage. This mean that the generator will deliver 7100 Watt (voltage times current) this is know as the power factor. The actual operating load would be 6800 Watts and I would even operator the generator at its peak wattage. Something in the neighborhood of 10--15% less the peak wattage. Therefore a good positive theatrical Wattage would be 5800 to 6350 operating wattage. Then this generator would run all day.



Just remember Ohm's Law. Current plays a big factor in loading of a generator while the operation voltage is at 120 AC Volts. Example: electric motor; Now electric motor when starting will pull three time its operation current. Operating current for a 1/2 HP AC motor is 6 amperes but start this electric motor will require 18 amperes. This is one reason why they starting capacitors on smaller electric motors. Larger three phase electric motor can literal stop a generator cold...in its tracks. It put such a large demand on the generator it stops the engine powering the generator. I have seen crankshaft break because the generator could handle the heavy current load.



Remember, any time you are running a small gas powered generator. All ways figure what the load and surge current load will be before hooking up any generator. Normally this is figured in VA (volt/amps). Wish you lock. GB...stewbison

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I have a Yahama 1000, it won't stay running unless the choke is pulled out all the way, what can my problem be?
I have the same problem, did you find the solution please?

Jan 01, 2011 | Yamaha 1,000 Watt Portable Generator...

1 Answer

NEED HELP WITH TORQUE SPECS ON 1998 CHEVROLET SURBURBAN CYLINDER HEADS 5.7
Cylinder Head Removal & Installation 5.7L Engine To Remove:
  1. Disconnect the negative battery cable.
  2. Drain the engine coolant.
  3. Remove the air cleaner assembly.
  4. Remove the upper radiator hose.
  5. Remove both heater hoses.
  6. Disconnect spark plug wires at distributor cap.
  7. Remove distributor cap.
  8. Remove the coolant bypass hose from the water pump.
  9. Remove the drive belt. NOTE: It is not necessary to evacuate the A/C refrigerant.
  10. Remove the A/C compressor from the mounting bracket and set it aside.
  11. Remove the wiring bracket from the rear of the cylinder head.
  12. Disconnect the accessory bracket and slide forward.
  13. Remove the upper and lower intake manifold.
  14. Remove the exhaust manifolds.
  15. Remove the valve rocker arms and pushrods.
  16. Remove the power steering pump pulley.
  17. Disconnect the electrical connector from the power steering pump.
  18. Remove nuts attaching the power steering pump to the engine.
  19. Remove power steering pump mounting bracket bolts and nut.
  20. Slide power steering pump/bracket assembly forward and remove stud.
  21. Set power steering pump/bracket assembly aside.
  22. Disconnect the wiring bracket from rear of the right cylinder head.
  23. Remove the generator.
  24. Remove the oil indicator tube bracket bolt.
  25. Remove the generator mounting bracket.
  26. Remove the sixteen cylinder head bolts.
  27. Remove cylinder heads and gaskets.
  28. Clean all sealing surfaces.
To Install:
Right Side NOTE: Clean all dirt, debris, and coolant from the engine block cylinder head bolt holes. Failure to remove all foreign material may result in damaged threads, improperly tightened fasteners or damage to components.
NOTE: Do not use any type of sealant on the cylinder head gasket (unless specified).
  1. Clean the cylinder head bolt holes with a thread chaser and compressed air.
  2. Check the cylinder head locating pins for proper installation.
  3. Place a new cylinder head gasket over the engine block dowel pins.
  4. Install the cylinder head to the engine block.
  5. Apply sealant (GM P/N 12346004 or equivalent) to cylinder head bolt threads.
  6. Install the cylinder head bolts. gm-03-50-685.gif

  7. Tighten the cylinder head bolts in sequence on the first pass.
    • Torque to: 22 ft. lbs. (30 Nm)
  8. Using a torque angle meter, tighten the long bolts (1, 2, 5, 6, 9, 10 and 13) on the second pass in sequence to 75°.
  9. Using a torque angle meter, tighten the medium bolts (14 and 17) on the second pass in sequence to 65°.
  10. Using a torque angle meter, tighten the short bolts (3, 4, 7, 8, 11, 12, 15 and 16) on the second pass in sequence to 55°.
  11. Install the valve rocker arms and pushrods.
  12. Install the generator mounting bracket stud.
    • Torque to: 15 ft. lbs. (20 Nm)
  13. Loosely assemble the generator mounting bracket over the stud.
  14. Install all nuts and bolts finger tight.
    • Torque to: 30 ft. lbs. (41 Nm)
  15. Install the generator.
  16. Install the oil indicator tube bracket bolt.
  17. Install the exhaust manifold.
  18. Install the lower intake manifold.
  19. Install the valve rocker arm covers.
  20. Install the wiring bracket to the rear of the cylinder head.
  21. Connect the accessory bracket.
  22. Install the A/C compressor.
  23. Install the drive belt.
  24. Install the distributor cap.
  25. Connect the spark plug wires to the distributor cap.
  26. Install both heater hoses.
  27. Install the upper radiator hose.
  28. Install the air cleaner assembly.
  29. Refill the engine coolant.
  30. Connect the negative battery cable.
Left Side To Install:
NOTE: Clean all dirt, debris, and coolant from the engine block cylinder head bolt holes. Failure to remove all foreign material may result in damaged threads, improperly tightened fasteners or damage to components.
NOTE: Do not use any type of sealant on the cylinder head gasket (unless specified).
NOTE: Clean all dirt, debris, and coolant from the engine block cylinder head bolt holes. Failure to remove all foreign material may result in damaged threads, improperly tightened fasteners or damage to components.
NOTE: Do not use any type of sealant on the cylinder head gasket (unless specified).
  1. Clean the cylinder head bolt holes with a thread chaser and compressed air.
  2. Check the cylinder head locating pins for proper installation.
  3. Place a new cylinder head gasket over the engine block dowel pins.
  4. Install the cylinder head to the engine block.
  5. Apply sealant (GM P/N 12346004 or equivalent) to cylinder head bolt threads.
  6. Install the cylinder head bolts. gm-03-50-685.gif

  7. Tighten the cylinder head bolts in sequence on the first pass.
    • Torque to: 22 ft. lbs. (30 Nm)
  8. Using a torque angle meter, tighten the long bolts (1, 2, 5, 6, 9, 10 and 13) on the second pass in sequence to 75°.
  9. Using a torque angle meter, tighten the medium bolts (14 and 17) on the second pass in sequence to 65°.
  10. Using a torque angle meter, tighten the short bolts (3, 4, 7, 8, 11, 12, 15 and 16) on the second pass in sequence to 55°.
  11. Install the valve rocker arms and pushrods.
  12. Install the power steering pump mounting bracket stud.
    • Torque to: 15 ft. lbs. (20 Nm)
  13. Loosely assemble the mounting bracket over the stud.
  14. Install all nuts and bolts finger tight.
    • Torque to: 30 ft. lbs. (41 Nm)
  15. Install the power steering pump pulley.
  16. Connect the electrical connector to the power steering pump.
  17. Install the exhaust manifold.
  18. Install the lower intake manifold.
  19. Install the valve rocker arm covers.
  20. Install the wiring bracket to the rear of the cylinder head.
  21. Connect the accessory bracket.
  22. Install the A/C compressor.
  23. Install the drive belt.
  24. Install the distributor cap.
  25. Connect the spark plug wires to the distributor cap.
  26. Install both heater hoses.
  27. Install the upper radiator hose.
  28. Install the air cleaner assembly.
  29. Refill the engine coolant.
  30. Connect the negative battery cable.

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2 Answers

What r the torque specifications on installing a head on a 1999 yukon and the tightening sequence
Check this procedure...
  1. Tighten the first design cylinder head bolts as follows:
    1. M11 bolts 1st pass: in sequence to 22 ft. lbs. (30 Nm).
    2. M11 bolts 2nd pass: in sequence + 90 degrees.
    3. M11 bolts (1,2,3,4,5,6,7,8): + 90 degrees.
    4. M11 bolts (9 and 10): + 50 degrees.
    5. M8 cylinder head bolts (11,12,13,14,15) to 22 ft. lbs. (30 Nm). Begin with the center bolt (11) and alternating side-to-side, work outward tightening all of the bolts.
  2. Tighten the second design cylinder head bolts as follows:
    1. M11 bolts (1-10) 1st pass: in sequence to 22 ft. lbs. (30 Nm).
    2. M11 bolts (1-10) 2nd pass: in sequence + 90 degrees.
    3. M11 bolts (1-10): + 70 degrees.
    4. M8 cylinder head bolts (11,12,13,14,15) to 22 ft. lbs. (30 Nm). Begin with the center bolt (11) and alternating side-to-side, work outward tightening all of the bolts.

c409909.jpg

Fig. Cylinder head bolt tightening sequence-4.8L, 5.3L and 6.0L engines (click for zoom)


Install the cylinder head bolts in sequence to 22 ft. lbs. (30 Nm). The bolts must be tightened once, then be tightened again in sequence in the following order:
  1. Step 1: Short length bolt: (3, 4, 7, 8, 11, 12, 15, 16), plus 55 degrees.
  2. Step 2: Medium length bolt: (14, 17), plus 65 degrees.
  3. Step 3: Long length bolts: (1, 2, 5, 6, 9, 10, 13), plus 75 degrees.

7f05cb7.jpg

Fig. Cylinder head bolt tightening sequence-5.0L and 5.7L engines

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1 Answer

How do I remove the case from the generator on a B & S motor / power boss 030249? the gov. is fried.
take the end case off the end of geny 3 x 10mm bolts?
on the end of the geny shaft is a 10mm bolt wip it out,
the geny is held to the motor by 3 or 4 bolts wip them out too,
then with a sharp rap on the geny case near the motor end the geny should pop off the taper its held on to the engine crank shaft,,,there tight as well!

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1 Answer

I need toque specs for a Generac GT990. Head bolts and rod bolts.
Just happened to find a copy on-line for the Generac V-Twin GT990 Engine Service Manual.
E-Mail me : js2770@yahoo.com and I'll send you the PDF File for that. Good luck with your repair.

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Coleman 6750 powermate with yamaha mz360 electro ignition cranks and runs fine but doesn't put out any power brushless how do i get it to produce power again?
One of two things:

1. The rotor has lost all the magnetism it needs to get started generating. It needs to have a tiny bit to get started.

I have used the system of a couple series 150 watt lamps between the generator and the utility power. Search Google for description of this method. I have used it and it works.

2. You have blown diode(s) on the rotor. They would have to be replaced. I have not found a source and had to make my own.

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Have crafsman 5500generac generator need to seperate genhead from
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