Question about Craftsman 17.5 hp 42 in. Deck Lawn Tractor - CA Model

1 Answer

18.5 hp lawn tractor will not turn over when on compression stroke . If you move it a little by hand past compression stroke it will start.

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Jason Patterson

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  • 34 Answers

Sounds to me that you have a weak battery and is not putting out enough cranking amps..Takes more cranking amps during compression strokes to start than in down stroke...That is why you are able to start it in the down stroke less amps needed to turn motor over..

Posted on Aug 09, 2014

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5 Related Answers

wadembly

Wade Mobley

  • 513 Answers

SOURCE: Sears lawn tractor. While mowing, ran over a

the branch probably got cought in the belt that runs the rearend it may have caused it to come off check the drive belt

Posted on Jun 06, 2009

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Anonymous

  • 1 Answer

SOURCE: Loss of drive in a Craftsman Lawn tractor

I also have a Craftsman tractor with the same problem. Sears repairman said it needed a new transmission and it would cost $1,400 to install. A new one is about $1,000. Anyway, if you remove the battery and the battery tray under the seat it will expose the transmission fill hole (hex). I opened the top and it looked empty. I had a bottle of 90 weight gear oil in my shop and filled the transmission to the top. I have not had any problems with it since. $4.00 bottle of oil verses a new tractor is worth a try.

Posted on Nov 30, 2009

Anonymous

  • 52 Answers

SOURCE: Sears Craftsman riding mower V belt getting chewed

I believe you may have the belt over one or more of the belt retainers next to the pulleys. They are 5 or 6 inches long and about a 1/4 inch in diameter. You have to loosen them when you put the belt on then adjust them to where they are just barely touching the back of the belt. They keep the belt from jumping off.

Posted on May 02, 2010

paul nielsen

  • 252 Answers

SOURCE: Craftsman lawn tractor, LT2000, 18

hi there

here is web site for manual and parts diagram

http://www.hammerwall.com/Download_Manual/12377/

have the valves been adjusted correctly ? or could have a tight valve clearance
and when gets warm holds valve open - looses power

your engine will be 31p777 intek ohv avs

run the piston to tdc on compression stroke , then turn piston past tdc & set piston is 1/4 inch down the bore on power stroke this eliminates decomprssor lift from the setting

intake should be 0.003 Thou
and exhaust 0.005t thou

then check the carburettor main jets and emulsion tube and pilot jets and air bleeds and progression ports for obstruction etc for restriction / blockage

check fuel flow from tank to carb , check that the fuel solenoid has got continual 12 volt supply
when switched on and does not go o/c cutting fuel supply to main jet

have a look let me know

cheers hope it helps

pauly 46

dont forget the thumbs rating

Posted on Jun 09, 2011

jbiggs8150

JOHNNY B.

  • 14 Answers

SOURCE: craftsman lawn tractor 917.271060w/kohler 15.5 hp

VALVE LASH NEEDS ADJUSTED AND CHECK ROCKER ARM BOLTS FOR TIGHTNESS. CONSULT KOHLER FOR PROPER TORQUE ON BOLT AND VALVE CLEARANCE BEFORE CRANKING UP ENGINE.

Posted on Oct 13, 2012

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I'm guessing a "weak battery" is the problem. Sometimes a fresh new battery can make a piece of equipment run "like new"..... Also, you might make sure battery is high enough capacity... If all this does you no good, I'd guess you have a "tired" or worn out starter...

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hi there

here is web site for manual and parts diagram

http://www.hammerwall.com/Download_Manual/12377/

have the valves been adjusted correctly ? or could have a tight valve clearance
and when gets warm holds valve open - looses power

your engine will be 31p777 intek ohv avs

run the piston to tdc on compression stroke , then turn piston past tdc & set piston is 1/4 inch down the bore on power stroke this eliminates decomprssor lift from the setting

intake should be 0.003 Thou
and exhaust 0.005t thou

then check the carburettor main jets and emulsion tube and pilot jets and air bleeds and progression ports for obstruction etc for restriction / blockage

check fuel flow from tank to carb , check that the fuel solenoid has got continual 12 volt supply
when switched on and does not go o/c cutting fuel supply to main jet

have a look let me know

cheers hope it helps

pauly 46

dont forget the thumbs rating

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1 Answer

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You likely need to get the valves adjusted,it sounds like the decompressor is not working.You need to get the compression down to 130 lbs while cranking or the starter can't overcome the compression.Try turning the motor past the compression stroke by hand and see if it will crank faster,if so then the decompressor is out of adjustment.If the decompressor is not just a lob on the valves then you need to call the repair depot for craftsman and find out what you need to do to fix the problem.If none of the above works then you may need a battery,or just clean the cables and battery posts.

Apr 19, 2010 | Craftsman 17.5 hp 42 in. Deck Lawn Tractor...

1 Answer

Craftsman 17.5 hp, Starter will engage, will not go past the compression stroke. Checked valve clearance, it is fine. Mechanic says it's probably not the starter. HELP?!


I'm not sure of the engine in your machine but i can tell you that all small gas engines have some sort of de-compressor,be it on the cam or a simple" bump" on the camshaft.It sounds like yours is not working.Some briggs engines need the valves adjusted until there is only 120lbs of compression during cranking to aid in starting,when it does start the compression will go back to normal as it comes off that "bump" with engine rpm.Check with your dealer for the proper adjustment of the de-compressor.

Mar 23, 2010 | Craftsman 17.5 hp 42 in. Deck Lawn Tractor...

1 Answer

Have a turfmaster 16.5 hp 42"....left the deck engaged when I turned it off now it won't start after it is disengaged. It trys to turn over, but won't.


The deck engage is not the problem here. If it were related, the engine would not even try. The valves need adjustment to compensate for wear on the "internal compression release" located on the camshaft. This is normal wear.

To "get by" for now, you can turn the flywheel by hand (in a clockwise direction) until it is just beyond the compression stroke and the starter should start it just fine, provided the rest of the machine is healthy.
PLEASE NOTE: this procedure for starting is masking the REAL issue and the valves will need routine adjustment as soon as feasible.

If you are handy with tools, know the internal workings remotely, and wish to explore, reply with a request and I will explain the valve adjustment procedure in detail for you.

Hope this helps,
Dolf-

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