John Deere LA100 Series Questions & Answers

May be ‘No spark’ , ( may be faulty ignition coil or the earth switch activated probably the switch under the seat still in ‘closed position’ and it acts like a kill switch) or the connector of the hour may be ‘loose contact’, another reason is ‘no fuel getting in to the combustion chamber, in this case a blocked fuel line or a faulty carburettor or fuel shut of valve not working.

No, they are not the same. My neighbor had an L100, and it was different from my LA100. My LA100 has a bigger engine if I remember correctly. They did look very similar on the outside, but under the hood, they looked different. My LA100 still runs great.

Cheers mate

Fuel filters clog alot try changing the filter and also check inside the gas tank for dirt and sediment

You will need to check with the Serial number. Mine was manufactured in 2005

Ok thanks a lot

Well, I had 186 hours on mine and had to replace the motor. Keep in mind these are the cheaper made models built so they could compete with the likes of other similar priced brands. The X series are the heavy duty models.

Horicon Works (lawn and garden and turf care), Horicon, Wisconsin

Are your blades not turning? If they are stuck or not turning, please get a service person to fix. This can be a very dangerous problem that often leads to untrained people getting hurt.

With motor off, lift the exhaust flap (where the cut grass shoots out) reach in and see if you can turn the blade with anything but your hand. Use a stick or something. If it turns look on top of mower deck to see if the belt is off of pulley or broken.

I think you might be able to find out using the JD model search. external link 

Is it a man or auto? Engine size and name could also help.

Hi Kevin, unfortunately I'm not aware of such a timing belt arrangement, however the idea seems quite plausible. Generally speaking, I have been unhappy with the light quality of the LA100 series cutter deck and frequently needed to change either belts or blades, which is an expensive proposition.

I have since changed to a Greenfield's mower which is brilliant in comparison. It has a single drive shaft driving a single cutter assembly with swing back blades. It's cut is excellent and extremely powerfull as the engine torque does not need to be divided between two cutter assemblies. So far I have had outstanding belt and blade life.

My suggestion would be slow down with engine at full throttle, you might be traveling to fast for the blades to cut sufficiently or your not at full throttle. Blades could be getting dull.

Hi All, thanks for your replies. There is no doubt that changing the total machine would be one answer, however, as we are a not for profit organisation our funds are limited and the thought of changing the complete machine is a little out of our reach. To improve the life of the blades I hard face them with "Cobalarc" electrodes about twice a year. We also plate the inside of the deck with some form of wear resistant "plate" such as stainless scraps, works well.

As for the Notched Belts. The type used in auto engines timing belts and some motor bike final power transmission systems would do the job well. In fact from what I have observed the notched timing belts discarded at scheduled changes on car engines could continue to be used in mowers and would probably give a fair life.

The problem is the design gap between the ends of the blades, once the ends wear the gap gets larger. Hard facing overcomes this problem but design change would make life a lot easier. I do doubt that speed has anything to do with the gap between the blade ends. I'm sure John Deere could solve his problem in a flash if they were dinkum.

Regards,

Kelvin