The Jawa 42 FJ is a 334 cc liquid-cooled, fuel-injected motorcycle with a 6-speed constant-mesh gearbox. Jawa Yezdi Motorcycles lists 29.17 PS and 29.62 Nm, and the bike has disc brakes at both ends with dual-channel ABS, a 12 L fuel tank and a 184 kg kerb weight.
The Jawa 42 FJ is a motorcycle from Jawa. It is currently on sale. With a 334 cc engine it sits in the 250–450 cc class.
Power comes from a 334 cc single-cylinder liquid-cooled fuel-injected engine that makes 29.17 PS at 7,500 rpm and 29.62 Nm of torque at 6,000 rpm. Its bore is wider than its stroke (81 mm x 65 mm), a short-stroke layout that generally favours higher revs. Divide power by kerb weight and it has about 159 PS per tonne; by that measure, it is lively, with easy overtakes and relaxed highway speeds.
It has a 6-speed manual gearbox.
Suspension is by telescopic forks, Ø 41 mm at the front and twin shock absorber, 5-step adjustable pre-load at the rear. Braking is by a 320 mm disc at the front and a 240 mm disc at the rear, with dual-channel ABS. ABS on both wheels keeps either tyre from locking under hard braking. It rides on 18-inch front and 17-inch rear alloy wheels — 100/90-18, 56H at the front and 140/70-17, 66H at the rear.
The seat is 797 mm off the ground, which is about average and suits most riders. It weighs 184 kg ready to ride, which is on the heavy side, so moving it by hand takes some effort. Ground clearance is 175 mm — enough for most speed breakers. The wheelbase is 1,440 mm. It carries 12 L of fuel.
For the Jawa 42 FJ, Mechiee offers a fixed ₹2,799 doorstep service.
Figures are as published by the manufacturer. Exact values can differ slightly by variant and model year.
Sources: Jawa Yezdi Motorcycles, BikeDekho
Specifications last checked:
Mechiee doorstep service
₹2,799
Mechiee's fixed doorstep service price for this model.
Follow the schedule in the owner's manual for your exact variant and year. A regular service is the cheapest way to catch small problems before they become expensive ones.
Engine oil is the single most important consumable to keep fresh. Top up between services if the level drops, and change it on schedule.
With Disc, 320 mm and Disc, 240 mm brakes, check pad or shoe wear, lever and pedal free play, and braking feel at every service.
A clean, correctly tensioned and lubricated chain lasts longer and wastes less power. Check slack regularly, especially after riding in rain or dust.
A liquid-cooled engine relies on coolant. Check the level and look over hoses and the radiator for leaks or damage, and replace coolant as the owner's manual directs.
A clogged air filter or worn spark plug shows up as hard starting, weak throttle response and poorer fuel economy. Both are checked at a regular service and replaced when worn.
Brake fluid absorbs moisture over time, which lowers its boiling point. Have its level and condition checked and change it on the interval in the owner's manual.
This bike runs 100/90-18, 56H / 140/70-17, 66H tyres. Check pressure, tread depth and sidewalls, and replace tyres that are worn or cracked.
Weak starting, dim lights or a flickering console are early signs the battery or charging system needs a look.
Book a verified Mechiee mechanic, track them live, and keep a permanent record of every job on your bike.
Doorstep service₹2,799
Mechiee mechanics service the Jawa 42 FJ at your doorstep across 119 areas of Pune, with bigger jobs handled at a Mechiee Service Center. Pick your area to see local details.
Manufacturer figures for each bike. A dash means the value is not published in our sources.
| Specification | Jawa 42 FJ | Jawa 350 | Jawa Perak | Jawa 300 |
|---|---|---|---|---|
| Engine | 334 cc | 334 cc | 334 cc | 293 cc |
| Max power | 29.17 PS @ 7500 rpm | 22.57 PS | 29.9 PS @ 7500 rpm | 27 bhp |
| Max torque | 29.62 Nm @ 6000 rpm | 28.1 Nm | 30.01 Nm @ 5500 rpm | 28 Nm |
| Claimed mileage | — | — | — | 32 kmpl |
| Gears | 6-speed | 6-speed | 6-speed | 6-speed |
| Kerb weight | 184 kg | 194 kg | 187 kg | 170 kg |
| Fuel tank | 12 L | 13.2 L | 13.2 L | 14 litres |
| Front brake | Disc, 320 mm | Disc, 280 mm | Disc, 280 mm | Disc |
| Rear brake | Disc, 240 mm | Disc, 240 mm | Disc, 240 mm | Drum |
What the technical terms on this page mean.
The Jawa 42 FJ has a 334 cc engine, described as single cylinder, 4 stroke, liquid cooled, dohc.
The Jawa 42 FJ is rated at 29.17 PS @ 7500 rpm maximum power and 29.62 Nm @ 6000 rpm maximum torque.
The Jawa 42 FJ has Disc, 320 mm at the front and Disc, 240 mm at the rear, with Dual channel ABS.
The Jawa 42 FJ runs 100/90-18, 56H at the front and 140/70-17, 66H at the rear on alloy wheels.
Follow the service schedule in the owner's manual for your exact variant and year. Between services, keep an eye on engine oil, chain, tyres and battery. With Disc, 320 mm and Disc, 240 mm brakes, brake wear and adjustment are worth checking at every visit.
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