Low power after tune-up

[7394]

Each cylinder brought to TDC,

Each cylinder brought to TDC, valve clearance set to 0.002" per manual found online. That sounded a bit tight to me, I thought it would be more like 0.004"-0.006".

That is definitely TOO tight. That online spec is NOT correct. I spoke to a Kawasaki Tech on my previous Kaw engine about this specifically ...
True spec is .004 - .006. Re-adjust to intakes @ .004 or .005 & Exhausts @ .005 or .006

 

[mjw357]

UPDATE: opened up the rocker covers and found this.
All parts there, I must have nut tightened everything down. Set intake to 0.004 exhaust to 0.005 an closed it back up. See how it runs tomorrow.
Thanks everyone for the replies and info.

 

[MParr]

Did you inspect the pushrod?

 

[SeniorCitizen]

A Infrared temperature gun will check exhaust pipe temperature if you have one .

 

[mjw357]

Did you inspect the pushrod?

Yes it is straight, no marks.

 

[mjw357]

Got it out, started right up, ran great for couple minutes mowing then suddenly died. Restarted with choke, same thing mowed for a minute and died. Repeated that a couple time, then ran it aound the yard full throttle and then noticed it was surging. So thinking under the load of mowing it’s dying. Dirty carb?

 

[7394]

How long did you run it with valve lash TOO tight ? Hope it's not a burnt valve.

 

[MParr]

Got it out, started right up, ran great for couple minutes mowing then suddenly died. Restarted with choke, same thing mowed for a minute and died. Repeated that a couple time, then ran it aound the yard full throttle and then noticed it was surging. So thinking under the load of mowing it’s dying. Dirty carb?

You may have some internal damage. You will probably have to remove the head and have a look.

 

[mjw357]

Update 3: the solution to the surging/dying was in the carburetor. This is the passage opposite the needle valve. That little square piece of debris must have been the culprit. Sprayed it out and re-assembled all is good. Wife is out mowing right now. She loves to mow!

 

[woodstover]

Kawasaki FX801V (852 cc, 26.6/25.5 HP) vertical V-Twin engine: review and specs

Kawasaki FX801V (852 cc, 26.6/25.5 HP) V-Twin vertical engine specifications: horsepower and torque, cylinder compression, valve clearance, oil type and capacity

www.engine-specs.net