The PTO (Power Take-Off) extension on Briggs & Stratton engines is usually the crankshaft. What other PTO extensions are possible on selected Briggs & Stratton engines?

That one time they had cam driven pto extensions but I don't they have any currently but you can contact them and ask.

Briggs Stratton Engines Small Engine Lawn Mower Parts

they only make two now , but the main model is available with different size drive shafts , (3 sizes) but the main model refered to a PTO is the "tiller" version it's got a 50/1 reduction shaft on the side there used to be a company in wisconsen that made a gear swap for this to make a 30/1 reduction , dont know if its still made

There will be an arrow or line on the crank and usually a dot on the cam sprocket. line these marks up and your engine is timed.

Go to the prominent search engine select images and type "Briggs Stratton clutch diagram"
There are multitudinous diagrams, your model, whatever it is (you didn't say) is likely to be there.

check for a broken wire some where

Depending on your engine.. Briggs and Stratton or Kohler there are 2 different seat switches that are used to power the PTO clutch. The seat switch can cause the PTO clutch to disengage anytime there is not at least 70 lbs in the seat.

The PTO drive wiring has a 30 amp fuse in it. If by chance a stick went through the belt and tore off the wires at the PTO clutch (Common failure) even after you repair the broken wire you still need to replace the fuse.

Check the PTO clearance gap. It should be 0.012 dis-engaged. Any other value and the clutch will not work correctly. Adjust the clutch if necessary.

There is a 2 pin Pigtail just off of the PTO Clutch that you need to check for voltage at the connector. Probe the back of the wires if you can and your looking for 12V DC under the following conditions.

BRAKE ON or tied down
KEY ON
SEAT (Briggs and Stratton engine only) Someone needs to be sitting on the seat.

Then Pull the PTO Switch out. You should hear the PTO Clutch CLICK. If you hear the click there is no need to check voltage. The PTO switch is a multi function switch and it is quite possible the PTO switch failed. I doubt that the PTO Clutch has failed as they normally give you some kind of noisy indication that they are failing and don't fail straight away.

So.. In short
Check PTO Switch (Red wires) to usually red or brown thru the switch
Check 30 amp fuse
Check PTO clutch wires near PTO clutch (They get torn from something traveling through the pulley)
Check PTO clutch clearance at 0.012
Check Brake switch for an audible click as you depress it some distance No click.. possible bad switch
Listen for Seat switch Click as you slowly add weight to the seat. No Click or any click and it can still be suspect due to the Briggs and Stratton installed engine ones have more than one function.. Ignition and PTO clutch power.

The actual wiring diagram is on page 35 of the owners manal that can be found here:
http://www.managemylife.com/mmh/owner_manuals/27245/CRAFTSMAN-Lawn,-Tractor-L9910386?brand_name_search=917273023

Lastly... check each of the mower deck blade bearings. A seized bearing can cause PTO problems.

Hopefully you have enough information to solve the mystery. If not just respond here and I will help you.

Thanks for choosing FixYa.

Kelly

First thing u might want to check is the governor--Make sure the spring and linkage is hooked up properly and the governor is moving freely.

6/3 SJ cord will carry this load for a 25 foot cord.