Login to enhance your online experience. Login or Create an Account
Logo
Shopping Cart

Shopping Cart 0 Items (Empty)

Massey Ferguson 200 series tractor factory workshop and repair manual download

- Safety first
- Confirm your tractor has a gasoline/petrol engine (spark plugs) — many MF 200-series tractors have petrol versions but some use diesel/glow‑plug engines; diesel engines do NOT have spark plugs (they use glow plugs). If unsure, check the engine label or owner’s manual before proceeding.
- Work with the engine cold to avoid burns.
- Disconnect the negative battery terminal to prevent accidental sparks or engine start.
- Wear safety glasses and gloves; keep rags/combustibles away from the work area.

- Tools you need (detailed descriptions and how to use each)
- Spark plug socket (6-point, deep, 16 mm or 5/8" commonly) with rubber insert or foam collar
- Description: A deep socket sized to the plug hex with a rubber/foam insert that grips the plug so it won’t fall out.
- How to use: Fit the socket on the extension, push it onto the plug until the rubber holds the plug, then turn with the ratchet to loosen/tighten. Use careful, steady force to avoid cross-threading.
- Ratchet handle (3/8" drive recommended) and suitable extension(s)
- Description: A ratcheting wrench that allows you to apply torque and remove/install the socket in tight spaces.
- How to use: Attach socket+extension to ratchet; turn counterclockwise to loosen, clockwise to tighten. Use extension to reach recessed plugs.
- Torque wrench (3/8" drive, reading in Nm or ft‑lb)
- Description: Wrench calibrated to apply a specific torque; prevents over- or under-tightening.
- How to use: Set target torque (see manual or recommended values below), tighten plug until wrench clicks/indicates target. If you don’t have one, follow the hand-tightening guidance below.
- Spark plug gap tool / feeler gauge
- Description: Small tool or thin blades used to measure and adjust the electrode gap.
- How to use: Slide the correct thickness blade between electrodes; gently bend side electrode to achieve the target gap (do not press on center electrode).
- Dielectric grease (optional but recommended) or small amount of silicone grease
- Description: Non-conductive grease for the inside of spark plug boots.
- How to use: Put a small dab inside each boot to ease future removal and prevent moisture intrusion.
- Penetrating oil (e.g., WD‑40, PB Blaster) — optional if plugs are stuck
- Description: Oil that seeps into threads to loosen corrosion.
- How to use: Spray around the plug base, wait 10–15 minutes, then attempt loosening gently.
- Needle‑nose pliers or spark plug boot puller
- Description: Tool to grab and remove stubborn ignition leads without pulling on the wire.
- How to use: Grip the boot (not the wire) and twist/pull straight out; use boot puller or pliers carefully to avoid damaging wire.
- Wire brush or compressed air
- Description: For cleaning around plug hole.
- How to use: Clean debris from around plug so nothing falls into cylinder when plug is removed; blow or brush gently.
- Replacement spark plugs (see "parts" below)
- Description: New plugs matched to your engine spec (type, heat range, gap).
- How to use: Install new plugs as below.
- Optional extra tools that might be required
- Longer extension(s) or universal swivel joint: For hard-to-reach spark plugs.
- Distributor cap/rotor puller or small screwdriver: If you need to remove a distributor cap for access.
- Small magnet or flexible pickup: To retrieve a dropped plug or tools.
- Penlight: To inspect plug wells and boots.

- Parts and when replacement is required
- Spark plugs
- Why replace: Worn electrodes, cracked porcelain, heavy deposits, or incorrect heat range cause poor running, low power, hard starting, and high fuel use.
- What plug to buy: Use the exact plug spec from the tractor’s manual or bring an old plug to the parts store. Common brands: NGK, Champion — part number varies by engine. Don’t guess by tractor model alone; match engine code or old plug marking.
- Gap: Set to the engine specification (typical small petrol tractor range ~0.70–0.90 mm / 0.028–0.035 in). Check manual for exact value.
- Spark plug wires/boots or distributor cap/rotor
- Why replace: Cracked boots, arcing, corrosion, or high resistance cause misfires. Replace if brittle, cracked, or corroded.
- Ignition coil or points (older systems)
- Why replace: If new plugs/wires don’t fix misfire or weak spark, the coil or ignition components may be failing. Test/replace as needed.

- Step‑by‑step procedure (concise, safe technique)
- Prepare the tractor
- Park on level ground, set parking brake, remove key.
- Disconnect battery negative terminal.
- Clear area around engine and clean plug well with brush or compressed air.
- Access and remove plug wires/boots
- Grasp the boot at its base (not the wire), twist gently to break the seal, then pull straight off.
- Use a boot puller or pliers if stuck, protecting the boot with cloth.
- Remove spark plugs
- Fit spark plug socket with extension and ratchet onto the plug. Turn counterclockwise to break it loose.
- Remove slowly — the rubber insert holds the plug so it can be pulled out without dropping.
- If plug is stuck, apply penetrating oil around base, wait, then retry gently.
- Inspect old plugs
- Normal: light tan/gray insulator.
- Fouled: black, oily, or wet — indicates oil or rich mixture problem.
- Overheated: white blistering/erosion — wrong heat range or ignition timing issue.
- Damaged: cracked porcelain or eroded electrodes — replace plug.
- Prepare new plugs
- Check part number and thread type match the old plug.
- Set the gap with the gap tool to the engine spec.
- Apply a very light coating of anti‑seize to threads only if manufacturer recommends; many modern plugs are plated and DO NOT need anti‑seize — if you don’t know, skip anti‑seize.
- Put a small dab of dielectric grease inside the boot.
- Install plugs
- Start threading by hand to avoid cross‑threading. It should turn easily for several turns.
- Tighten with ratchet until snug.
- Final torque: use torque wrench to engine‑spec torque (typical small tractor spark plugs ≈ 20–25 Nm / 15–18 ft‑lb). If you do not have a torque wrench:
- For a new plug into an aluminum head: tighten by hand until snug, then 1/2 turn with the wrench.
- For a used plug: snug, then about 1/8–1/4 turn.
- Warning: these are fallback rules — over-tightening strips threads; under‑tightening leaks compression.
- Reinstall wires/boots
- Push each boot onto its plug until you feel/ hear a click and the boot seats fully.
- Replace coil/distributor cap if required.
- Reconnect battery and test
- Reconnect negative battery terminal.
- Start the tractor — it should run smoothly, idle normally, and have improved throttle response.

- How to know if you need extra tools or parts after testing
- Persistent misfire or rough running after new plugs
- Check wire continuity with an ohmmeter; replace wires if high resistance.
- Inspect distributor cap/rotor for carbon tracks or corrosion; replace if visible damage.
- Test ignition coil (special tool or shop help) — replace if weak.
- Hard-to-reach plugs
- You may need longer extensions, universal joints, or to remove components (air cleaner, manifold) for access.

- Quick troubleshooting guide from plug appearance
- Light tan/gray insulator: normal.
- Black, sooty dry deposit: plug fouled by rich mixture — check carburetion/fuel system.
- Oily plug: oil entering combustion — valve guide/seal or piston ring issue.
- White/over‑heated: too hot or incorrect heat range — check timing and plug heat range.
- Wet with fuel smell: flooding or injection issue.

- Final tips (short)
- Always carry the old plug to the parts store if unsure of the correct replacement.
- Replace plugs in sets (all at once) for consistent performance.
- Keep a record of plug type, gap, and torque for future service.

- Common values to verify in your manual (do these before final tightening)
- Exact spark plug part number/type
- Specified gap (mm/inches)
- Specified torque (Nm or ft‑lb)

End of instructions.
rteeqp73

You Might Also Like...

Kryptronic Internet Software Solutions