Can I adjust the clearance on these valves?

M

Mick Oz

Well-Known Member

Joined

Jan 2, 2017

Threads

16

Messages

107

• Jan 18, 2017 / Can I adjust the clearance on these valves?

• #1

These seem to have an 8mm nut in the centre of the rocker that holders the rocker in place. They don't seem to adjust as I'm used to, what am I missing?

 

Attachments

• 
  IMG_3971.jpg

  109.6 KB · Views: 19
• 
  IMG_3977.jpg

  101.6 KB · Views: 19
• 
  IMG_3976.jpg

  80.9 KB · Views: 16

M

Mick Oz

Well-Known Member

Joined

Jan 2, 2017

Threads

16

Messages

107

• Jan 18, 2017 / Can I adjust the clearance on these valves?

• #2

Better angle from an online source

 

Attachments

• 
  IMG_2733.JPG

  27.5 KB · Views: 20

reynoldston

Lawn Pro

Joined

May 23, 2011

Threads

92

Messages

5,705

• Jan 18, 2017 / Can I adjust the clearance on these valves?

• #3

If you have hydraulic lifters so they are nonadjustable. What do you have for a engine?

 

M

Mick Oz

Well-Known Member

Joined

Jan 2, 2017

Threads

16

Messages

107

• Jan 18, 2017 / Can I adjust the clearance on these valves?

• #4

Sorry this is the same engine as my other thread repairing a beater Toro.its a Kohler 5000 series

 

reynoldston

Lawn Pro

Joined

May 23, 2011

Threads

92

Messages

5,705

• Jan 18, 2017 / Can I adjust the clearance on these valves?

• #5

Sorry I can't help you out with a 5000 series Kohler because I have never heard of such a model Kohler. Could that be the tractor model number and not the engine model? If so that mower came with a Kohler command engine. This being the case that engine came with adjustable and non adjustable lifters. It looks like yours came with the nonadjustable hydraulic lifters and they adjust themselves. If by chance you loosen or remove one of these lifters you will need to bleed it or you can bend the push rod.

 

R

Rivets

Lawn Royalty

Joined

Mar 11, 2012

Threads

55

Messages

14,743

• Jan 18, 2017 / Can I adjust the clearance on these valves?

• #6

Your engine has hydraulic lifters and they are non-adjustable.

 

M

Mick Oz

Well-Known Member

Joined

Jan 2, 2017

Threads

16

Messages

107

• Jan 18, 2017 / Can I adjust the clearance on these valves?

• #7

Thankyou both, it made perfect sense when I called the engine a Kohler 5000 Series but was absolute rubbish, too tired to make good sense.
It's a Toro 5000 Series Zero turn with a Kohler CV740 engine. Thank you for taking the time to interpret my question and give me an answer. None adjustable hydraulic lifters. I will look else where for the reason it won't run.

 

reynoldston

Lawn Pro

Joined

May 23, 2011

Threads

92

Messages

5,705

• Jan 19, 2017 / Can I adjust the clearance on these valves?

• #8

Mick Oz said:

.
. I will look else where for the reason it won't run.

Click to expand...

Spark, fuel, compression, and timing and it will run. Seeing you were looking into valve adjustment is it lacking compression? If this is so on both cylinders?

 

M

Mick Oz

Well-Known Member

Joined

Jan 2, 2017

Threads

16

Messages

107

• Jan 20, 2017 / Can I adjust the clearance on these valves?

• #9

I have spark and fuel, and the timing should be right after checking the flywheel. So my next check point was compression, but I don't have a compression tester so I thought that I would check the valve clearance and adjust if needed.

 

reynoldston

Lawn Pro

Joined

May 23, 2011

Threads

92

Messages

5,705

• Jan 20, 2017 / Can I adjust the clearance on these valves?

• #10

I don't know your tool situation or skills. I find I need certain tools in my shop to do engine repairs. I am at a lost here ??? Maybe you can tell something by putting your finger over the spark hole and turning the engine over. Personally I never had very good luck testing compression that way.

 

Last edited: Jan 20, 2017