McConnel Magnum 1.6, 1.9 and 2.2 flail mower service schedule

Toppers and flails · Operator manual rev. 19.06.14

Every maker's service job for the McConnel Magnum 1.6, 1.9 and 2.2 flail mower, counted in hours, with the oils, filters and parts each one needs. Add your implement to Farmyard Workshop and it works out what's due from your hours and dates, and keeps the service history.

Track your Magnum 1.6, 1.9 and 2.2 flail mower for free

Service intervals

Job	When
8-hour checks: bolts, belts, flails, grease, oil level	every 8 hours
Grease the PTO driveshaft tubes (every 100 hours)	every 100 hours
Gearbox oil change	every year
Storage	every year
Adjust or replace drive belts	when needed

Service jobs and parts

8-hour checks: bolts, belts, flails, grease, oil level

Daily checks · every 8 hours

McConnel's maintenance list for every 8 hours: bolts, belt tension, flails, guards, grease points, gearbox oil level, rotor clear of debris, and frame and hitch. Also after the first 2 hours on a new machine or new belts.

Part	Qty	Notes	Part number
Y-blade distance sleeve	1	Genuine McConnel, per Magnum 130 / 170 / 190 / 225 parts manual (pub. 408)	1061036
Y-blade sleeve	1	Genuine McConnel, per Magnum 130 / 170 / 190 / 225 parts manual (pub. 408)	1061035
Y-blade (flail)	1	Genuine McConnel number 1061034 (Magnum 130 / 190 / 225 parts list, 48 per 1.9 m rotor and 56 per 2.25 m rotor); Magnum 170 uses 1061050. Check your model	1061034
Grease	1	LIS 3 (as the manual says)	check your handbook

Step-by-step

Lower the mower to the ground, disconnect the PTO, stop the engine and take the key out. Wait for the rotor to stop completely.
Check all nuts and bolts are tight.
Check belt tension: 15 mm deflection under 10 kg.
Check the flails; replace missing or damaged ones straight away, with the one diametrically opposite.
Check the guards, grease all points, check the gearbox oil level and clear anything wrapped in the rotor.
Check the frame and three-point hitch are sound.

Tools: Spanners, Grease gun, Steel rule, Spring balance or 10 kg weight

Grease the PTO driveshaft tubes (every 100 hours)

PTO shaft · every 100 hours

McConnel: every 100 hours, separate the telescopic driveshaft and grease the inner shaft.

Part	Qty	Notes	Part number
Grease	1		check your handbook

Step-by-step

Disconnect the PTO shaft from the tractor with the engine stopped and the key out.
Pull the two halves apart, clean them and grease the inner tube.
Reassemble, refit and check the guards and chains.

Tools: Grease gun, Rags

Gearbox oil change

Gearbox · every year

McConnel says change the gearbox oil every 12 months and check the level every 8 hours. The gearbox takes 1.2 L of SAE 90; the half shaft takes 0.9 L of SAE 90 (the manual gives no change interval for the half shaft: check its level with the gearbox).

Part	Qty	Notes	Part number
Gear oil SAE 90	1	Gearbox 1.2 L. Aztec Oils match: TRANSMATEC EP-4 90	check your handbook

Step-by-step

Lower the mower to the ground, disconnect the PTO, stop the tractor engine and take the key out.
Drain the gearbox and refit the plug.
Fill through the filler plug until oil starts to drip from the level plug hole (about 1.2 L). Refit both plugs.
Check the half shaft level the same way and top up with SAE 90.

Tools: Drain tray, Spanners, Funnel

Storage

Storage · every year

McConnel says clean and lubricate the mower before storage, keep it dry, and check for worn or damaged parts so they can be ordered for next season.

Step-by-step

On firm level ground, lower the mower, stop the tractor, take the key out and remove the PTO shaft.
Chock the rear roller, then remove the top link and lower links and drive the tractor clear.
Clean and grease the mower and store it dry under cover.
List worn flails, belts or bearings and order them before the season.

Tools: Pressure washer, Grease gun, Chocks

Adjust or replace drive belts

Belts · when needed

Belts must be kept at 15 mm deflection under 10 kg. McConnel says replace them as a complete set and re-tension after the first 2 hours. There is no fixed replacement interval.

Part	Qty	Notes	Part number
Drive belt	4	Genuine McConnel; 3 on the 1.6, 4 on the 1.9 and 2.2; replace as a set	21233.01

Step-by-step

Lower the mower, disconnect the PTO, stop the engine and take the key out. Never run the mower with the belt guard off.
Remove the belt cover. Slacken the 4 gearbox retaining nuts and the upper pulley fixing bolts.
Turn the adjuster (clockwise tightens) to 15 mm deflection under 10 kg. Move the gearbox the same distance as the upper pulley so the half shaft stays parallel to the rotor.
Retighten the pulley bolts, the 4 gearbox nuts and the adjuster lock nut. Check the taper lock bolts are at 45 Nm.
Refit the belt guard. Recheck new belts after 2 hours.

Tools: Spanners, Steel rule, Spring balance, Torque wrench

Oils, fluids and capacities

System	Oil or spec	Capacity
Gearbox	SAE 90	1.2 L
Half shaft	SAE 90	0.9 L
Grease points	LIS 3 grease (as written in the manual)

Specifications


Working width	1.6, 1.9 or 2.2 m
Tractor power	35–40 hp (1.6), 45–50 hp (1.9), 55–60 hp (2.2)
PTO and rotor speed	540 rpm PTO; rotor 2,300 rpm
Flails	2.2: 64 hammer flails; Y-blades 64/72/80 or paddles 32/36/40 on an alternative rotor
Drive belts	3 (1.6) or 4 (1.9, 2.2), part 21233.01
Belt tension	15 mm deflection under 10 kg (22 lb)
Taper lock bolts	45 Nm (33 lb ft)
Weight (2.2)	780 kg

Known problems

Rotor vibration

Stop at once: usually a missing or broken flail. If it continues the rotor must be checked and rebalanced.

Belts overheating

Slipping belts, flails hitting the ground or too high a forward speed.

Flail type and size

Paddles for material up to 15 mm, Y-blades to 30 mm, hammers to 50 mm; Y-blades and paddles need a different rotor.

Repair guides

Gearbox leaking oil or noisy: level, breather and seal replacement (Moderate, 1 hour to check; 3–5 hours to change an output seal): Oil running down a gearbox or from the vent plug, oil level dropping between checks, gearbox suddenly noisy, oil on the blade carrier or deck.
Flail mower vibrating: flail replacement in pairs and choosing the right flail (Moderate, 1–2 hours): Sudden vibration, rough or irregular cut, flail missing or broken, rotor fouled with wire or string, noisy rotor bearings.
Flail mower drive belts slipping or overheating: tension and replacement (Moderate, 1–2 hours): Smell of hot rubber, belts squealing, rotor slowing in heavy growth, belts glazed or cracked, rapid belt wear.

The full step-by-step guides are in Farmyard Workshop once you add your implement.

Parts list with genuine part numbers

McConnel Magnum Elite 190/225/245/270 parts manual, rev. 20.06.17 (publication 530); 190 and 225 columns used for the 1.9 m and 2.2 m sizes. Book does not list a 160, so check fit of the 1.6 m

Rotor

Part	Part number	Qty	Notes
Y-blade	1061034	48 (190) / 56 (225)	Wear part
Hammer flail	1061100	24 (190) / 28 (225)	Wear part
Y sleeve (flail bush)	1061416	24 (190) / 28 (225)	Wear part
Y spacer	1061036	96 (190) / 112 (225)	Wear part
Flail bolt	1062302	24 (190) / 28 (225)	Wear part
Flail locknut	1062304	24 (190) / 28 (225)	Wear part

Drive

Part	Part number	Qty	Notes
Drive belt XPB 1250	21233.01	4	Wear part
Bearing	1061173	2	Wear part
Bearing with casing (rear roller)	1061415	2	Wear part
Elve slip clutch 80/45	1061163	1	Wear part
Elve slip clutch 80/40	1061165	1	Wear part
Oil washer (seal)	1061402	1	Wear part

Machine

Part	Part number	Qty	Notes
Skid, left	1061418	1	Wear part
Skid, right	1061417	1	Wear part
Rear roller scraper, 190	1061452	1	Wear part
Rear roller scraper, 225	1061453	1	Wear part
Flap bar, 190	1061158	1
Flap bar, 225	1061109	1
Rear roller, 190	1061153	1
Rear roller, 225	1061107	1
PTO shaft, 190 and 225	1062246	1

Sources

Open Farmyard Workshop