Part of the New Holland Operator Manuals.
Pull the dipstick before the first cut of the day and you want the level, the correct grade, and the refill amount in one place instead of three. This operator manual for the New Holland LS55-20H yard tractor keeps them together, and it does the same for every other job the machine asks of you.
Fifty pages, published by New Holland as 86599816, covering serial prefix 715695006 - T0E0001 and up. Five sections run from Safety and Gasoline and Oil into Operation, where the controls, PTO engagement, safety interlock system, and attachment power lift are explained, then Maintenance, with the service interval chart, air cleaner, engine oil, spark plug, greasing, tire pressure, brake, transaxle fluid, and battery, and finally Troubleshooting for starter, engine, power, vibration, and drive complaints.
Buy the PDF once and it stays yours for this tractor, ready the next morning the grass will not wait.
What's Inside This New Holland LS55-20H Operator Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | 8-13 | Safe Operating Practices, New Holland Riding Mower Safety, Slope Chart, Safety and Instruction Decals |
| Gasoline and Oil | 14-15 | Recommended Gasoline, Stabilizer/Conditioner, Filling the Fuel Tank, Check Engine Oil Level |
| Operation | 16-26 | Think Safety First, Controls (Reverse Interlock Switch, Parking Brake), Starting and Stopping the Engine, Operating the Power Take Off, Safety Interlock System |
| Maintenance | 27-46 | Service Interval Chart, Air Cleaner, Engine Oil, Spark Plug, Greasing and Lubrication, Tire Pressure, Brake, Fuel Tank |
| Troubleshooting | 47-50 | Starter, Engine, Power, Vibration, Drive |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Battery charging rate | 4 amperes or less | p. 4 |
| Battery charging time | 4 hours | p. 4 |
| Spark plug tightening torque | 20 ft-lb (27 Nm) | p. 32 |
| Tire pressure (set-up sheet, LS35/LS45/LS55) | 20 psi | p. 3 |
| Tire pressure (maintenance section) | 12 psi | p. 34 |
| Crankcase oil capacity with filter | 4 pints | p. 30 |
| Battery voltage | 12 v | p. 41 |
| Spark plug tightening torque for storage | 30 ft-lb | p. 45 |
New Holland LS55-20H Common Problems This Manual Covers
Engine cranks but never fires
A slow crank or a no-start after the machine has sat usually traces back to the battery before it traces to fuel or spark. The Troubleshooting section works through starter and engine complaints and has you confirm a good 12 v battery first.
Manual Section: Troubleshooting p. 41Hard starting from a fouled plug
Short runs and rich choking leave carbon on the electrode, which shows up as slow starts and a rough idle under load. The Spark Plug section covers cleaning, gapping, and replacement, and calls for 20 ft-lb (27 Nm) when the plug goes back in.
Manual Section: Spark Plug p. 32Engine quits when backing up
Shift into reverse with the PTO engaged and the interlock shuts the engine down, which owners often mistake for an ignition fault. The Safety Interlock System pages explain the reverse interlock switch, how operating in reverse is meant to work, and how to test each circuit.
Manual Section: The Safety Interlock System p. 19Power fades in dry, dusty grass
Mowing dry ground packs the element until the engine bogs on hills and smokes under throttle. The Air Cleaner section in Maintenance shows how to pull, clean, and replace the element, and the service interval chart tells you how often to do it in dusty conditions.
Manual Section: Air Cleaner p. 28Attachment lift slow or dead
A deck or blade that will not come up, or that drifts back down, is a common complaint once these tractors have a few seasons on them. The Power Lift section in Maintenance covers the adjustment and service of the attachment power lift rather than guessing at the linkage.
Manual Section: Power Lift p. 37Hydrostatic drive gets weak
Sluggish response on grades, creeping in neutral, or a whine from the rear end usually means the transaxle fluid needs checking. The Transaxle Fluid section tells you how to check and service it, and the drive complaints in Troubleshooting point you at the rest.
Manual Section: Transaxle Fluid p. 39Gummed fuel system after storage
Gasoline left in the tank over winter varnishes the carburetor and the machine either will not start or surges once it does. The Stabilizer/Conditioner pages cover treating fuel before the tractor sits, and the Fuel Filter and Fuel Tank procedures handle the cleanup when it was skipped.
Manual Section: Stabilizer/Conditioner p. 15Frequently Asked Questions
Does this cover my LS55-20H?
It is the New Holland operator manual for the LS55-20H yard tractor, publication 86599816, written for serial prefix 715695006 - T0E0001 and up. Check the serial plate on your machine against that range before buying.
What is the spark plug torque on the New Holland LS55-20H?
The Spark Plug procedure in the Maintenance section specifies tightening the spark plug to 20 ft-lb (27 Nm), along with the cleaning and gapping steps that come before it. p. 32
How much oil does the engine hold?
The Engine Oil procedure gives a crankcase capacity of 4 pints with the filter, so you can buy oil before the change instead of halfway through it. Checking the level is covered earlier, in the Gasoline and Oil section. p. 30
Does it explain the PTO and safety interlock?
Yes. The Operation section covers engaging the power take off, the reverse interlock switch, operating in reverse, and a step by step test of the safety interlock system so you can confirm each switch works before mowing. p. 13
Is this New Holland LS55-20H manual a PDF I download?
Instant PDF download. You get the full 50-page searchable Operator Manual immediately after payment. Open it on your laptop, tablet, or phone right in the shop.
Am I able to print pages from this New Holland LS55-20H manual?
Yes. The PDF is DRM-free, so printing works from any reader and any printer.
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