Rotax engine torque specifications, Rotax cylinder head torque specs, Rotax aircraft engine bolt torque specs.

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Torque Specifications for Rotax engines.
It is very important that if you are rebuilding or repairing a Rotax aircraft engine that the engine bolts and nuts be properly torqued when reassembled.

ITEM

BOLT/NUT
SIZE

NM

INCH LBS
Crankcase screws, 532/582/618 8mm 24 210
Crankcase screws, 277/377/447/503 8mm 22 195
Crankcase or screws 6mm 10 90
Crankcase nuts (or screws) 10mm 38 335
Crankcase studs, 532/582/618 10mm 12 105
Crankcase studs, 277/377/447/503 10mm 10 90
Cylinder hex collar screws 8mm 24 210
Cylinder head nuts 8mm 7 60
Cylinder head studs 8mm 22 195
Magneto housing nut, 277/377/447/503 22mmx1.5 90 800
Magneto housing nut, 532/582/618 22mmx1.5 95 840
Fan nut 16mmx1.5 60 530
Allen screws for fan housing 6mm 10 90
Allen screws for stator plate 5mm 6 55
Taptite screws for trigger coils 5mm 6 55
Allen screw for starting pulley 8mm 22 195
Hex screws for rewind starter 6mm 10 90
Hex screws for cylinder cowling 8mm 14 125
Rotary valve cover screws 8mm 22 195
Intake manifold screws, 277/377/447/503 8mm 22 195
Intake manifold screws, 277/377/447/503 6mm 10 90
Intake flange screws, 532/582/618 8mm 14 125
Lock nut for oil pump drive gear 6mm 7 60

Banjo bolt for oil pump

 6mm 8 70

ITEM

BOLT/NUT
SIZE

NM

INCH LBS
Cylinder screw for oil pump                      5mm 5 45
Spark plug, engine cold 14mm 27 240
Allen screws for stator plate 5mm 6 55
Taptite screw for pickups 5mm 6 55
Lock nut for ignition coil 6mm 8 70
Hex screws for mouting plate 6mm 5 45
Hex screws for starter gear 8mm 22 195
Studs for water outlet socket 6mm 3 25
Hex nut for water outlet socket 6mm 5 45
Lock nut for water pump impeller 6mm 7 60
Taptite screws for water pump housing 6mm 8 70
Hex screws for gear box      8mm 24 210
Hex collar screw for gear box housing 8mm 24 210
Hex screw for drive gear 1/2-20 UNF 1/2" 60 530

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