[Jimmer G]

Have a 1981 case 446 with onan 16hp. It turns over very hard, took plugs out and still turns over very hard. Jumped it with the truck and still turns over hard. Can I wire the positive off battery directly to starter and ground to motor to see if its the starter thats the problem?

 

[iko]

Turn the fan by hand see if it's hard to turn a full two turns. Normally there should be some part of the turn that's easy. If the plugs are out it should turn fairly easy throughout the turn.


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[Lionel]

Just make sure you don't have a rear PTO valve, and have it inadvertently turned on,

I went through that, 2 or 3 years ago, until I happen to notice it was half on. Motor was very tough to turn over, and once I got it to run, wouldn't build any RPM past 1800-2100 RPM.

 

[Jimmer G]

Just make sure you don't have a rear PTO valve, and have it inadvertently turned on,

I went through that, 2 or 3 years ago, until I happen to notice it was half on. Motor was very tough to turn over, and once I got it to run, wouldn't build any RPM past 1800-2100 RPM.

The pto was the first thing I checked, was right in the middle where it should be.

 

[k0jdd]

Check the Travel Control lever and Mid-Lift Cylinder lever to make sure they are centered as well.
And try with the rear axle in neutral.

 

[dundee222]

Check that mice have not decided to take up residence in the blower housing. Their building materials will cause the symptoms you describe.

 

[bhildret]

Is this tractor new to you? This condition just developed? What happened just before ... ?

Brian

 

[Jimmer G]

Is this tractor new to you? This condition just developed? What happened just before ... ?

Brian

got the tractor this summer, started turning over a little harder and kept getting worse, now I have to put the battery charger on it in start mode let it awhile and then I can turn it over some

 

[curtisfox]

More likely starter worn, armature dragging on the fields, maybe even Bendix loaded up with gooey grease, take it off, clean, and maybe take it to electrical machinal shop and have it checked.........Curt

 

[Jimmer G]

More likely starter worn, armature dragging on the fields, maybe even Bendix loaded up with gooey grease, take it off, clean, and maybe take it to electrical machinal shop and have it checked.........Curt

Thank You

 

[Lionel]

Turns over some, implies you can't get it to start. ?

Pop the plugs out as a previous poster suggested and turn it by hand, turns over how with plugs out?

 

[iko]

Like Lionel said, turn over by hand. The starter is ruled out this way. Could be your pump causing there problem or anything hydraulic.


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[Jimmer G]

Like Lionel said, turn over by hand. The starter is ruled out this way. Could be your pump causing there problem or anything hydraulic.


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took the plugs out and turns over easy by hand

 

[Gordy]

I have torn into starters. Some have bad bushings that allow the stator and armature to rub. The bushings can be hard to find and you may have to make your own.

A couple had a magnet popped loose, I cleaned these up and used JB weld to glue them back in place.

A few had water get inside, and rust removal was necessary.

More common is a black build up on the commutator where the brushes ride, this can be cleaned with some 400 grit emery cloth and a pick to scrape between the segments. This black build up is from normal sparking during use, but can be made worse if the engine is a oil leaker and the oil makes it into the starter and onto the commutator.

Hint; the brushes can be a PITA when it comes to reassembly. Using dental floss with a slip knot to hold the brushes all the way into their holders generally makes it much easier.

Cheers,
Gordy

 

[Jimmer G]

I have torn into starters. Some have bad bushings that allow the stator and armature to rub. The bushings can be hard to find and you may have to make your own.

A couple had a magnet popped loose, I cleaned these up and used JB weld to glue them back in place.

A few had water get inside, and rust removal was necessary.

More common is a black build up on the commutator where the brushes ride, this can be cleaned with some 400 grit emery cloth and a pick to scrape between the segments. This black build up is from normal sparking during use, but can be made worse if the engine is a oil leaker and the oil makes it into the starter and onto the commutator.

Hint; the brushes can be a PITA when it comes to reassembly. Using dental floss with a slip knot to hold the brushes all the way into their holders generally makes it much easier.

Cheers,
Gordy

Thanks