20 Most Recent Craftsman 20 hp 42 in. Deck Yard Tractor Questions & Answers

Replaced the carburetor had gas In oil. Changed oil, synthetic, 10/30 wt. Adjusted the valves. Started hard flywheel froze. Finally started then jackrabbit. Adjusted the carb throttle, was blowing blue black smoke now blowing white smoke through the exhaust. During one of restarts it didn't blow any color exhaust. Stumped. Riggs n stratton 18.5 riding mower. On fixed income need some close answers

Craftsman 20 hp... | Answered on Jul 12, 2019

that diagram should be on the mower deck. Clean it off you should see it.

Craftsman 20 hp... | Answered on Jun 24, 2018

Number one are you sure you replaced the new blades with the right ones. Another thing if you say you have hit something you may have bent one or both shafts.the blades are fastened to. You can check this out by spinning the blades by hand . Please pull the starting key before you put your hand underneath to check it out.

Craftsman 20 hp... | Answered on Mar 08, 2018

Check shear pins in the blades . Tyr turning by hand with power shut off. If you can turn by hand then I am sure the shear pins are broken. Check drive belts as well.

Craftsman 20 hp... | Answered on Feb 25, 2018

Suggest obtain the service manual for this model.
Use the shop diagrams to find your problem.

Craftsman 20 hp... | Answered on Jan 16, 2018

I think you also have to depress the clutch/brake pedal in order to crank. That is in addition to all of the other things you did

Craftsman 20 hp... | Answered on Dec 17, 2017

maybe the safty switch under seat might be starting to go out if that switch doesn't work the blades wont come on at all for safety

Craftsman 20 hp... | Answered on Nov 09, 2017

Sounds like you have a float problem their is a needle and seat the lets gas into bowl of carburetor if its bad it will not stop letting fuel in the carburetor causing your problem (Be sure to change oil before ing engine over or you could damage engine (with this problem you get gas into case which will remove oil from engine parts inside !

Craftsman 20 hp... | Answered on Aug 23, 2017

just bought a new craftsman riding mower. model lt1500. 17.5 hp with 42 inch deck. first time using I had the deck hight handle set on 6 the highest setting and still cuts grass to short, matter of fact it scalped the grass. anyway to set the deck higher. Its only 3 days old and still under warranty but the sears store is 20 miles away and I rented a trailer to go pick it up and hate to go rent another trailer to bring it back if its just a simple adjustment.

Craftsman 20 hp... | Answered on Mar 31, 2016

You should not be messing with the governor. The governor wants to slow the engine down. See which direction the throttle shaft needs to travel in, usually from the carb to the governor, to close the throttle butterfly, NOT the choke plate. Loosen the governor clamp, rotate the shaft clockwise while holding the governor in the same direction. Use your head to determine how to make these things happen while tightening the governor nut back up. The engine shouldn't race, and the throttle cable should now work. I shouldn't have told you any of that. Ok, here; if your motor blows up because you do something wrong, I TOLD you not to mess with the governor BEFORE I explained how to adjust one. But that's how you adjust one.

Craftsman 20 hp... | Answered on Feb 28, 2016

usually there is a diagram under foot rest of tractor on left side to show the routing of the belt if not usually on top of deck also

Craftsman 20 hp... | Answered on Nov 14, 2015

To start the tractor, current flows from the battery through the "start" contact of the ignition/start switch, then through two safety switches: one is activated by having the brake on (or by having the mower in neutral). The other is part of the PTO (engage mower blades) switch. I don't know which would come first on your mower, so get a test light or a multimeter and trace your way along this path. The current then goes to the small terminal on the solenoid.
Another possibility -- in changing the motor, did someone leave a ground lug off, or worse, maybe they just cut it off when removing the old engine? That would also prevent things from working. Good luck! If this is helpful, please rate it, thanks!

Craftsman 20 hp... | Answered on Oct 08, 2015

No!! Most tractors do not have posi traction. Why is this a concern anyway and why would one even care to know unless you are drag racing the thing. Stick to cutting grass Socrates!!

Craftsman 20 hp... | Answered on Oct 02, 2015

If it is a V twin Kohler engine, you may have a blown head gasket. It is a common issue. Great engine but has this one issue. Kohler has a head gasket kit with improved head bolts. Torque specs are included. You will need a inch pound torque wrench and common hand tools.

Craftsman 20 hp... | Answered on Nov 27, 2014

my craftsman dsl 3500 will start but wont move forward or backwards. whells wont turn

Craftsman 20 hp... | Answered on Nov 26, 2014

check the solenoid if you been jumping it off you could have burned it out and possibly the starter replace the solenoid first thats the cheap route and if that dosnt fix it check the starter if its buzzing or clicking its gone bad feel if it get hot if it does thats the bad sign to look for, replace solenoid, then starter thats my advise need more info messege me back for more, thanks, jamie

Craftsman 20 hp... | Answered on Sep 23, 2014

Unhook your fuel line from, fuel should run out

Craftsman 20 hp... | Answered on Sep 21, 2014

do you mean stuck as in the pulley doesnt turn? or stuck as in the arm that the pulley is attached to will not pivot? if its the pulley, replace the pulley. If its the lever, you will probably have to clean dirt or debris from between it and the cutting deck.

Craftsman 20 hp... | Answered on Sep 19, 2014

sounds like you need to adjust the valves. do a google search with your engine model number and "valve adjustment".

Craftsman 20 hp... | Answered on Sep 19, 2014

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