TECHNICAL SPECIFICATIONS

Jawa 42 FJ (Europa)

42 FJ EU

334 cc

MotorDataBook

Key specifications

The essentials of this version at a glance.

427.7 lb
Kerb/curb weight
✓
100/90-18
Front tyre size
✓
130/80-17
Rear tyre size
✓
10W-50
Engine oil viscosity
✓
1.32 US qt
Engine oil capacity with filter
✓
9 Ah
Battery capacity
✓
JASO MA-2
Engine oil specification
✓
MOTUL INUGEL EXPERT
Coolant specification
✓
6 items

Dimensions & Weights

Length
84.96 in ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Jawa Moto (jawa.eu) Document: 42 FJ: návod k obsluze (manual del propietario, checo) Reference: PDF p. 13 Verification: Verified Open document
Width
32.36 in ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Jawa Moto (jawa.eu) Document: 42 FJ: návod k obsluze (manual del propietario, checo) Reference: PDF p. 13 Verification: Verified Open document
Height
43.98 in ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Jawa Moto (jawa.eu) Document: 42 FJ: návod k obsluze (manual del propietario, checo) Reference: PDF p. 13 Verification: Verified Open document
Wheelbase
56.69 in ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Jawa Moto (jawa.eu) Document: 42 FJ: návod k obsluze (manual del propietario, checo) Reference: PDF p. 13 Verification: Verified Open document
Ground clearance
6.89 in ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Jawa Moto (jawa.eu) Document: 42 FJ: návod k obsluze (manual del propietario, checo) Reference: PDF p. 13 Verification: Verified Open document
Kerb/curb weight Con el 90 % de combustible y las herramientas, según el manual.
427.7 lb ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Jawa Moto (jawa.eu) Document: 42 FJ: návod k obsluze (manual del propietario, checo) Reference: PDF p. 13 Verification: Verified Open document
1 items

Brakes

Brake fluid specification
DOT4 ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Jawa Moto (jawa.eu) Document: 42 FJ: návod k obsluze (manual del propietario, checo) Reference: PDF p. 11 Verification: Verified Open document
6 items

Wheels and tyres

Front tyre size
100/90-18 ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Jawa Moto (jawa.eu) Document: 42 FJ: návod k obsluze (manual del propietario, checo) Reference: PDF p. 11 Verification: Verified Open document
Rear tyre size
130/80-17 ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Jawa Moto (jawa.eu) Document: 42 FJ: návod k obsluze (manual del propietario, checo) Reference: PDF p. 11 Verification: Verified Open document
Front tyre pressure - normal load Con el conductor solo (en frío).
28.57 psi ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Jawa Moto (jawa.eu) Document: 42 FJ: návod k obsluze (manual del propietario, checo) Reference: PDF p. 12 Verification: Verified Open document
Rear tyre pressure - normal load Con el conductor solo (en frío).
30.6 psi ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Jawa Moto (jawa.eu) Document: 42 FJ: návod k obsluze (manual del propietario, checo) Reference: PDF p. 12 Verification: Verified Open document
Front tyre pressure - full load Con pasajero («Tandem»).
28.57 psi ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Jawa Moto (jawa.eu) Document: 42 FJ: návod k obsluze (manual del propietario, checo) Reference: PDF p. 12 Verification: Verified Open document
Rear tyre pressure - full load Con pasajero («Tandem»).
32.49 psi ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Jawa Moto (jawa.eu) Document: 42 FJ: návod k obsluze (manual del propietario, checo) Reference: PDF p. 12 Verification: Verified Open document
4 items

Motorcycle Specific

Drive chain slack minimum
0.98 in ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Jawa Moto (jawa.eu) Document: 42 FJ: návod k obsluze (manual del propietario, checo) Reference: PDF p. 13 Verification: Verified Open document
Drive chain slack maximum
1.18 in ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Jawa Moto (jawa.eu) Document: 42 FJ: návod k obsluze (manual del propietario, checo) Reference: PDF p. 13 Verification: Verified Open document
Front axle torque
51.63 – 59 lb-ft ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Jawa Moto (jawa.eu) Document: 42 FJ: návod k obsluze (manual del propietario, checo) Reference: PDF p. 62 Verification: Verified Open document
Rear axle torque
51.63 – 59 lb-ft ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Jawa Moto (jawa.eu) Document: 42 FJ: návod k obsluze (manual del propietario, checo) Reference: PDF p. 57 Verification: Verified Open document
5 items

Engine & Fluids

Engine oil viscosity
10W-50 ✓
El manual recomienda dos productos (Motul H-Tech 100 4T y Castrol), ambos 10W-50.
Sources and verification (1)
Primary source ✓ Official Publisher: Jawa Moto (jawa.eu) Document: 42 FJ: návod k obsluze (manual del propietario, checo) Reference: PDF p. 9 Verification: Verified Open document
Engine oil specification
JASO MA-2 ✓
Norma que acompaña al producto Castrol recomendado por el manual.
Sources and verification (1)
Primary source ✓ Official Publisher: Jawa Moto (jawa.eu) Document: 42 FJ: návod k obsluze (manual del propietario, checo) Reference: PDF p. 9 Verification: Verified Open document
Engine oil capacity with filter Cambio de aceite con cambio del filtro de aceite.
1.32 US qt ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Jawa Moto (jawa.eu) Document: 42 FJ: návod k obsluze (manual del propietario, checo) Reference: PDF p. 46 Verification: Verified Open document
Coolant specification
MOTUL INUGEL EXPERT ✓
Producto recomendado por el manual (también Castrol Redicool HD premezclado); no da una norma.
Sources and verification (1)
Primary source ✓ Official Publisher: Jawa Moto (jawa.eu) Document: 42 FJ: návod k obsluze (manual del propietario, checo) Reference: PDF p. 10 Verification: Verified Open document
Coolant capacity
0.95 US qt ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Jawa Moto (jawa.eu) Document: 42 FJ: návod k obsluze (manual del propietario, checo) Reference: PDF p. 10 Verification: Verified Open document
2 items

Filters & Service Parts

OEM spark plug reference
RG6HCC ✓
Marca Champion según el manual.
Sources and verification (1)
Primary source ✓ Official Publisher: Jawa Moto (jawa.eu) Document: 42 FJ: návod k obsluze (manual del propietario, checo) Reference: PDF p. 9 Verification: Verified Open document
Spark plug gap
0.02 – 0.03 in ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Jawa Moto (jawa.eu) Document: 42 FJ: návod k obsluze (manual del propietario, checo) Reference: PDF p. 9 Verification: Verified Open document
1 items

Electrical & Battery

Battery capacity
9 Ah ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Jawa Moto (jawa.eu) Document: 42 FJ: návod k obsluze (manual del propietario, checo) Reference: PDF p. 12 Verification: Verified Open document
5 items

Lighting

Low beam bulb
60/55W ✓
El manual da las dos potencias del faro (12 V) sin indicar cuál es cruce y cuál carretera.
Sources and verification (1)
Primary source ✓ Official Publisher: Jawa Moto (jawa.eu) Document: 42 FJ: návod k obsluze (manual del propietario, checo) Reference: PDF p. 12 Verification: Verified Open document
High beam bulb
60/55W ✓
El manual da las dos potencias del faro (12 V) sin indicar cuál es cruce y cuál carretera.
Sources and verification (1)
Primary source ✓ Official Publisher: Jawa Moto (jawa.eu) Document: 42 FJ: návod k obsluze (manual del propietario, checo) Reference: PDF p. 12 Verification: Verified Open document
Front indicator bulb
10 W ✓
El manual da una única potencia para los intermitentes.
Sources and verification (1)
Primary source ✓ Official Publisher: Jawa Moto (jawa.eu) Document: 42 FJ: návod k obsluze (manual del propietario, checo) Reference: PDF p. 12 Verification: Verified Open document
Rear indicator bulb
10 W ✓
El manual da una única potencia para los intermitentes.
Sources and verification (1)
Primary source ✓ Official Publisher: Jawa Moto (jawa.eu) Document: 42 FJ: návod k obsluze (manual del propietario, checo) Reference: PDF p. 12 Verification: Verified Open document
Brake light bulb
1.31 W LED ✓
Segunda potencia de «Konc./brzdová světla» (piloto trasero/luz de freno), LED.
Sources and verification (1)
Primary source ✓ Official Publisher: Jawa Moto (jawa.eu) Document: 42 FJ: návod k obsluze (manual del propietario, checo) Reference: PDF p. 12 Verification: Verified Open document
2 items

Torque Specifications

Engine oil drain plug torque
14.75 lb-ft ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Jawa Moto (jawa.eu) Document: 42 FJ: návod k obsluze (manual del propietario, checo) Reference: PDF p. 46 Verification: Verified Open document
Oil filter torque
8.11 lb-ft ✓
Par de los tornillos de la tapa del filtro de aceite, según el manual.
Sources and verification (1)
Primary source ✓ Official Publisher: Jawa Moto (jawa.eu) Document: 42 FJ: návod k obsluze (manual del propietario, checo) Reference: PDF p. 46 Verification: Verified Open document

How we handle technical data

MotorDataBook prioritises official documentation and shows conditions, notes and traceability whenever a figure needs context. Unconfirmed values should not be presented as facts.