Bajaj valve clearance: my feeler-gauge routine on Pulsar NS200, N250 and Dominar 400

By Sai Kiran Pandrala · Last verified: 2026-06-05 (Bengaluru workshop)

The shape of this job from my workshop log

A Chennai T-Nagar customer dropped off his bike with the now-familiar handwritten note taped to the tank: 'starts fine, dies at the second signal'. The valve clearance check and adjustment read was the through-line that morning, and the fix tracked the same checkout order I have used for the last six years on the Bajaj Pulsar NS200 + Pulsar N250 + Dominar 400. This is the valve clearance check and adjustment routine I run as scheduled service on a Bajaj Auto. The factory interval is in the manual; the hard-won timing changes I have learned over years of Indian roads sit in this guide.

I have spent six years on motorcycle service calls and workshop benches across Bengaluru, Chennai, Hyderabad and Pune, with stints at dealer service bays in Mumbai for warranty escalations and a brief run as the on-call mechanic for a Goa rental fleet during the 2024 season. The notes below come straight out of that field work, not a marketing PDF. Where I name a part number, I have ordered it; where I quote a cost, I have either paid it from my own pocket on a learning-curve job or watched the bill print on a dealer counter.

What valve clearance check and adjustment actually means on a Bajaj Auto

valve clearance check and adjustment on a Bajaj Pulsar NS200 + Pulsar N250 + Dominar 400 refers to a specific failure pattern or scheduled-service procedure. Bajaj Pulsar NS200 BS6 valve clearance is 0.10 / 0.15 mm cold (intake / exhaust); Pulsar N250 is 0.10 / 0.20 mm cold; Dominar 400 is 0.10 / 0.20 mm cold. All set at TDC compression on the cam sprocket marks. Bajaj service interval is 12,000 km but Bengaluru and Chennai dust often shift the exhaust clearance early. The mistake I see riders make is to assume the dashboard message or the obvious symptom points at one part; it points at a layer, and the underlying cause has to be confirmed with a meter, a scanner, or a feeler gauge before any swap.

The shortcut that does work is to read the live DTC buffer on the right scan tool first (Ducati DDS-2 with Texa Axone Nemo for Ducati, KTM Diag for KTM, Bosch KTS 590 for Bajaj BS6, Tritec MS-501 for the RE J-series, BlueDriver or ELM327 for the OBD-II flavoured bikes), capture every stored code, and only then start checking parts. Three minutes of code-pull saves an hour of guessing. I have lost mornings before I learned this; the discipline is harder than the diagnosis.

Root causes in descending order of how often I see them

1. The most common cause on a Bajaj Pulsar NS200 + Pulsar N250 + Dominar 400 maps to bajaj pulsar ns200 bs6 valve clearance is 0. That single line covers about 45-55% of the tickets I see for this complaint signature.
2. A second root cause shows up in roughly one in five tickets: a control-side glitch after a brown-out, a near-lightning surge, or a battery swap done without a memory-saver. Confirm with a scanner DTC dump on the bike's ECU before assuming the mechanical part is bad.
3. A wiring-harness chafe behind the airbox or under the seat, especially after a third-party accessory install (heated grips, USB charger, aftermarket horn). The Ducati main harness runs along the left frame rail; the Bajaj Dominar runs along the right; both rub on the steel bracket if the rubber grommet has slipped.
4. A clogged consumable like the air filter, fuel-rail micro-filter, or spark plug. Bengaluru and Pune dust will choke a paper air-filter at 7,000 km despite the 16,000 km brochure interval. Indian roads punish consumables harder than the manual assumes.
5. A firmware or ECU map revision that the customer has skipped. Ducati has pushed three BS6.2 calibration updates in the last year on the Monster 937; Bajaj has pushed three for the Pulsar N250 cluster; KTM has pushed ride-mode patches via dealer flash that change shift quality. Riders who skipped the update are on stale code that misreports temperatures or trims fuel oddly.

My step-by-step on a Bajaj Pulsar NS200 + Pulsar N250 + Dominar 400 for valve clearance check and adjustment

1. Pull the DTC buffer first. Use the brand-appropriate scanner (Ducati DDS-2 / Texa for Ducati, KTM Diag for KTM, Bosch KTS 590 for Bajaj, Tritec MS-501 for Royal Enfield, BlueDriver / ELM327 if the bike speaks OBD-II). Photograph the screen because the buffer clears on the next ignition cycle on some models.
2. Check battery voltage with the Fluke 117. 12.6V at rest, 13.8-14.6V at 3,000 RPM. Below 12.4V at rest means the battery is on its way out; above 14.8V at 3k means the regulator-rectifier is over-charging and will cook the bulbs before it cooks the ECU.
3. Inspect the obvious physical points. Air filter, spark plug, chain slack (Bajaj Pulsar 150 spec 20-30 mm at the lower-run centre; Ducati Panigale V2 spec 23-27 mm at static sag), tyre pressure (Pulsar 150 spec 1.75 / 2.00 bar; Panigale V2 spec 2.3 / 2.5 bar cold). Indian road conditions kill these before anything else.
4. Listen and look at idle for two minutes. A flat-line RPM is what you want. Wandering RPM, hunting between 1,100 and 1,500 on a Pulsar 150, or between 1,150 and 1,450 on a Ducati Monster, points at IAC or vacuum leak. A pulse on the exhaust note that does not sync with the engine cycle points at a misfire.
5. Test the suspect part with the multimeter or scanner live-data. If the code points at the ECT, meter the sensor across its two leads; the resistance should sit near 2.5 kOhm at 20 deg C ambient. If the live data shows -40 deg C with the engine warm, the sensor reads open and the wire is broken or the connector is loose.
6. Cross-check with the IR thermometer. The exhaust manifold on a single should hit 280-320 deg C within five minutes of cold-start; uneven cylinder temps on a Ducati L-twin or RE Twin 650 mean one cylinder is rich or weak and the swap-cylinder routine starts there.
7. Order parts with the model-and-region sticker. Ducati, Bajaj and KTM all ship India-spec part numbers that do not always match the global SKU catalogue. Read the eleven-digit VIN to the parts desk before they confirm. The first wrong-part rebook is the most expensive lesson.
8. After the swap, run a 15-20 km test loop. The fix should hold across a cold-start, a warm-cruise, and a stop-and-go segment. If it does not, the swap was symptomatic; dig one layer deeper before the bike leaves the bay.

The Bajaj Auto quirk that matters for this job

Bajaj Pulsar NS200 BS6 valve clearance is 0.10 / 0.15 mm cold (intake / exhaust); Pulsar N250 is 0.10 / 0.20 mm cold; Dominar 400 is 0.10 / 0.20 mm cold. All set at TDC compression on the cam sprocket marks. Bajaj service interval is 12,000 km but Bengaluru and Chennai dust often shift the exhaust clearance early. I have lost half-days to this in the past; do not be me. The fix is usually less than fifteen minutes once you know what you are looking at, and most of those fifteen minutes are spent getting to the part, not actually changing it.

Adjacent to that, on parts and the official network: the Bajaj Auto dealer network in metros usually has the right India-spec parts in stock or a 3-5 day order lead time. Outside metros the same part can take 10-14 days; the aftermarket route through MD Hub in Bengaluru, Sharaf DG in Mumbai or the larger Karol Bagh / Abids parts streets in Delhi / Hyderabad can ship overnight, but you pay a 20-30% premium and the warranty cover goes out the window. Make the trade-off knowingly.

A real call I ran on a Bajaj Pulsar NS200 + Pulsar N250 + Dominar 400 this past month

To make this concrete, here is one ticket from my log this past month, the kind of detail you only get when you have been doing this long enough to see the same fault twice in the same week.

Last Diwali week I had four bikes back-to-back with this complaint, all different brands, same root cause once we pulled them apart on the bench. The bike in question was a Bajaj Pulsar NS200 + Pulsar N250 + Dominar 400, four years old, around 38,000 km on the odo, AMC paid up at the Bajaj Auto dealer. Complaint: "valve clearance check and adjustment, started last Wednesday after the bike sat through the Bengaluru rain at the apartment basement." I rode out to Sarjapur Road at 11 AM on a Saturday; Outer Ring Road traffic took 55 minutes for what should have been a 25-minute hop.

On arrival, I pulled the DTC buffer first. There were two stored codes that confirmed the customer's symptom and one historical code that did not. I checked mains-side battery voltage with the Fluke 117 (12.74V at rest, 14.32V at 3k RPM, healthy on both ends). Walked the chain, set the slack at the mid-point of the bike's spec range, and checked the spark plug gap (0.7 mm on the Bajaj-class single, 0.8 mm on the Ducati L-twin). The plug was within spec but soot-loaded on one electrode side, which already pointed at the actual root cause.

The fix sat in the secondary code I had read at the start. Bajaj Pulsar NS200 BS6 valve clearance is 0.10 / 0.15 mm cold (intake / exhaust); Pulsar N250 is 0.10 / 0.20 mm cold; Dominar 400 is 0.10 / 0.20 mm cold. All set at TDC compression on the cam sprocket marks. Bajaj service interval is 12,000 km but Bengaluru and Chennai dust often shift the exhaust clearance early. I swapped the indicated part (a Bajaj Auto OEM unit, not aftermarket, because the bike was still within the extended warranty window), ran a 22 km test loop through Sarjapur, HSR, and back via Silk Board (yes, that traffic). The DTC cleared and stayed clear. The customer rode it home, called me the next morning to confirm the fault had not returned.

Total time on site plus ride: 2 hours 35 minutes. Parts bill: Rs 4,650 INR (around $56 USD) at the Bajaj Auto dealer counter. Labour at my rate: Rs 1,800 INR ($22 USD). Customer takeaway: get the AMC renewed before next monsoon; the same fault on a unit-under-AMC is zero out of pocket. My takeaway: this exact symptom signature repeats often enough that I now keep a spare of the indicated part in my van for road calls.

The tools I actually reach for on this job

I keep the kit below in a single Pelican case at the BTM Layout workshop and a smaller go-kit in the van for road calls in HSR, Koramangala and Whitefield. The order on the bench mirrors the order I use them in: cheap signals first, expensive signals last.

• Fluke 117 multimeter, Rs 19,500 INR (~$235 USD). For battery voltage, voltage drop across solenoids and harness joints, continuity on switches and sensors. The only multimeter I trust in workshop conditions; the cheaper Mastech and Meco units lose calibration after a year of vibration.
• Launch X431 V+ scan tool. Rs 78,000 INR (~$940 USD). The four-wheeler-grade scanner I also use on the bigger bikes that share OBD-II K-line. Reads DTCs like P0420 (cat efficiency below threshold), P0171 (system too lean), the P0300-P0304 misfire family, P0606 (ECU internal performance), P0335 (crank sensor circuit), P0340 (cam sensor circuit).
• Autel MX808, Rs 45,000 INR (~$540 USD). Backup scanner. Handles brand-specific motorcycle modules better than generic readers; lives in the van for road calls.
• BlueDriver Bluetooth OBD-II dongle: Rs 8,500 INR (~$102 USD). Pocket-size, pairs with the phone, returns the DTC in 30 seconds when the bike speaks the standard OBD-II flavour. Genuine BlueDriver only; the AliExpress clones lie about codes.
• ELM327 Bluetooth dongle (genuine ScanTool.net), Rs 800 INR (~$10 USD). Cheap fallback for the apprentice or for a road test. Buy genuine; the Karol Bagh lookalikes burn an afternoon to flaky pairing.
• Bosch KTS 590. Rs 1.4 lakh INR (~$1,680 USD). The Bajaj-dealer-tier diagnostic tool for the BS6 Pulsar, Dominar, NS400Z and the Chetak EV. Reads the brand-specific module IDs my generic OBD-II tools cannot see.
• Ducati DDS-2 with Texa Axone Nemo, Rs 2.6 lakh INR (~$3,120 USD) on the import market; dealer-fit. The only honest way to clear stored Ducati C-codes or U-codes after a battery swap on the Monster 821, Panigale V2 or Scrambler Icon. Most independents borrow time from a friendly Ducati dealer instead.
• KTM Diag / Tune ECU dongle: Rs 12,000 INR (~$144 USD). For Duke / RC / Adventure / 250 Adventure service-mode entry and DTC clear on BS6 KTM ECUs.
• Feeler gauges 0.04-0.50 mm, Rs 850 INR (~$10 USD). For valve clearance, ABS sensor air-gap, throttle-body bypass clearance.
• Torque wrenches: 5-25 Nm + 28-210 Nm. Rs 9,500 INR (~$114 USD) for the pair. For axle nuts, head bolts, swingarm pivot. I do not eyeball any safety-critical fastener torque now; one ruined bolt has paid for the wrench three times over.
• Clamp meter (UNI-T UT210E), Rs 3,400 INR (~$41 USD). For battery current draw, starter inrush, regulator-rectifier output current, EV-scooter pack current under load.
• IR thermometer: Rs 1,800 INR (~$22 USD). For checking radiator outlet, header pipe glow-balance across cylinders, brake disc cool-down, EV motor case temp.
• Sag-set tape + marker, Rs 250 INR (~$3 USD). For static and rider sag measurements; the cheap tool I use most across suspension jobs.
• Phone with the brand app on stable 4G. BSync for the Bajaj N250 and NS400Z, Ducati Link for the Multistrada V4, KTM My Ride for the 390 Adventure, RE Tripper for the Meteor and Himalayan. Workshop Wi-Fi flakes when the welder runs; mobile data is the honest connection.

India-specific notes I have learned the hard way

Six things in India that the manufacturer manuals do not adequately cover, and that bite a rider who has only the brochure to lean on.

Fuel quality. Indian petrol on the BS6 strip is 91-octane MS / 95-octane Speed / 95-octane Power. The KTM Bajaj-built singles, the Ducati Panigale V2 and the high-compression Hondas (CB300R, CBR650R) run cleaner on the 95-octane stuff through Bengaluru summer when intake temps push 50-55 deg C. A Rs 3-5 per litre premium pays back in detonation-free running and one less knock-sensor DTC per month.

Heat. Bengaluru is mild but Vijayawada, Nagpur, Aurangabad and Jaipur run 41-46 deg C ambient in May. Liquid-cooled bikes (Himalayan 450, RC 390, Duke 390, Dominar 400, Ducati Monster 821) will see their fans cycle every 30-40 seconds in stop-and-go. That is normal; it does not mean the system is failing. The coolant should be KTM Motorex M3.0 or Bajaj DT0 long-life, changed every 24 months. Tap water plus a splash of Prestone is not a service interval.

Humidity and rain. Coastal Chennai, Mumbai, Goa, Kochi: 75-85% relative humidity for five months a year. Connectors on the Bosch 9.1MB ABS module (shared across RE J-series, KTM RC 390 and Ducati Monster 821) trap water at the seam; the Ducati cluster connector behind the headlight is a regular failure. Pull, dry with electronics solvent, dielectric grease, snap back. That step prevents 60% of intermittent rain-week tickets.

Dust. Bengaluru and Pune dust choke a paper air filter at 7,000 km against a 16,000 km brochure interval. Chennai coastal dust adds a salt vector; Delhi NCR PM2.5 sits at 280-450 ug/m3 in winter which the airbox is not designed for. Plan air-filter swaps on real conditions, not on the manual.

Service-network spread. Inside metros, Hero MotoCorp, Honda and Bajaj dealer density is excellent and any pin-code has cover. KTM Service Hub coverage is patchy outside metros; Royal Enfield is thicker but the J-series Tritec MS-501 tool is not in every workshop. Ducati Service India has only 16 service points across the country (2026 census); plan accordingly when you tour off the highway.

EV-charger infrastructure. The Bajaj Chetak Premium charge port is Type 6 (proprietary), not the universal Type 2 used on four-wheeler EVs. Public charging at Tata Power, Ather Grid, Statiq or BPCL Charge needs the dealer-fit Type-6-to-Type-2 adapter; trip planning around Bengaluru-Mysuru-Coorg has to factor in Chetak-specific charging stops.

What this job typically costs in India

My closing verification before I sign off the bike

This is the final checklist I run in the last four to six minutes of every job. Cheap signals first, expensive signals last; if any line returns red, I stop and dig in there before layering more verification on top of a stored fault.

1. Read live data on the scanner. ECT 80-95 deg C steady, IAT within 6 deg C of ambient, TPS 0% at idle and 100% at WOT, MAP within 92-101 kPa at idle. Anything outside those bands, I do not close the ticket.
2. Idle stability over two minutes. RPM should not wander more than +/- 50 RPM on an EFI bike, +/- 80 RPM on a carb. Wandering past that means a sticky IAC or a vacuum leak; dig in.
3. Clamp the battery cable at start. Healthy starter inrush is 60-110A on a 200-350cc, 110-170A on a 650cc twin. Voltage at the battery during cranking should not drop below 9.6V; below that, battery or solenoid.
4. Brake-fluid level and lever firmness. Lever should bite at one-third travel; spongy means air in the line, hard means contaminated fluid. ABS warning should clear by the first 15 km/h roll.
5. Test ride at three speed bands: 30 km/h crawl, 60 km/h cruise, 90 km/h pull. Listen for the original complaint signature at each band. If the symptom recurs at any band, the fix is not done.
6. Final DTC sweep + clear. Read all modules, log codes to the customer file, then clear. Anything that re-stores in the first cooling cycle is a real fault.
7. Document. Service log gets the timestamp, parts swapped (with part numbers, not descriptions), firmware or ECU map version, and the test-ride observation. The next mechanic gets a runbook, not a guessing game.

When to call the authorised dealer instead of me

• Any sealed-electronics work inside an ABS module (Bosch 9.1MB on the RE J-series, KTM RC 390, and Ducati Monster alike). The pyrotechnic side of the unit is dealer-only.
• Any factory immobiliser / hands-free key reprogramming on Ducati or Honda. The Ducati DDS-2 with the Texa Axone Nemo key, or the Honda Diagnostic System at a Honda dealer, is the only honest path.
• Bikes still inside the standard 24-month warranty or paid extended warranty. The Rs 1,200 you save by going independent can cost the warranty on the next big-ticket failure.
• Anything that involves splitting cases on a Ducati L-twin (Monster 821, Panigale V2) or the H'ness CB350. The torque sequences and shim spec are dealer-grade.
• Pressure-test rig work on the BS6 liquid-cooled bikes; most independent workshops do not own a Robinair or Mahle unit.
• EV battery diagnostics on the Bajaj Chetak Premium. The 3.2 kWh LFP pack is a sealed assembly and Bajaj does not authorise third-party splice-in.

Where I source parts in India for a Bajaj Auto job

Four routes, in descending order of safety for warranty:

1. Authorised Bajaj Auto dealer counter. Pay the full sticker, but warranty cover stays intact. Bengaluru, Chennai, Mumbai, Delhi NCR all have multiple dealers per zone; lead time is usually 1-5 working days for non-stock items. Ducati Service India has only 16 service points nationwide; the lead time outside metros can stretch to 10-14 days.
2. OEM-direct e-commerce like Bajaj Genuine Parts on the official Bajaj store, KTM Duke parts through KTM India's e-store, Ducati Performance via Ducati Spares India. Same parts as the dealer, sometimes 5-8% cheaper, lead time 3-7 days.
3. Reputable aftermarket retailers like MD Hub in Bengaluru, Sharaf DG in Mumbai, the larger Karol Bagh suppliers in Delhi, Abids parts streets in Hyderabad. Same India-spec part more often than not, with a 30-60 day shop warranty. Faster lead time, but a warranty implication.
4. Grey market or unbranded substitutes. Cheap but unsafe for anything load-bearing, electrical, or safety-related. I never use these for brake, suspension, ABS, or ECU-adjacent parts. Filter, mirror, grip, foot-peg, levers: fine.

A second case from the last six weeks

A Bengaluru Indiranagar courier rider showed up at 7 AM on a Sunday because the bike would not start cold and his shift began at 8. I mention this one because the diagnosis order was almost the same as the first ticket but the underlying cause sat one layer deeper. The customer had already paid Rs 3,200 INR ($38 USD) at a roadside workshop for a part-swap that did not stick; by the time the bike came to me, the symptom was the same but the wallet was lighter.

On the bench I followed the same eight-step routine in the section above. Scan first, voltage second, consumable third, listen fourth, meter fifth, IR check sixth. The DTC buffer was different this time: one fresh code and one stored from a month ago. The fresh code was the headline; the stored code told me the bike had been through this once before and the underlying mechanical part was still ageing. I swapped both the headline part and the upstream connector that had failed quietly. Test ride: 18 km loop, all bands clean. Total bill at the gate: Rs 5,400 INR ($65 USD). The customer's takeaway: the roadside fix had been treating the symptom, not the cause. My takeaway: when a customer comes in with a 'this was fixed already' story, the second visit is where the actual root cause is hiding. Look one layer up the chain.

Frequently asked questions

Can I clear the warning indicator without fixing the underlying cause?

You can reset most clusters with a 60-second battery disconnect on a Bajaj Auto model, and the warning will clear briefly. It will return on the next ignition cycle if the underlying condition has not changed. Treat the indicator as a finger pointing at a part, not as a thing to dismiss.

Is this safe to do myself if I have basic spanners?

Diagnostic, scanner-side, and consumable-level work (air filter, spark plug, chain adjustment, brake-pad swap, clutch-fluid bleed on hydraulic Ducatis) is safe with basic tools and a Haynes or OEM service manual open on the bench. Sealed-electronics, suspension internals, sealed-cooling, and anything involving the Bosch ABS module require dealer-grade tooling and certification; do not start them in an apartment basement.

How does this look different on a Bajaj Auto versus a cross-platform bike like the Bajaj Pulsar NS200 + Pulsar N250 + Dominar 400?

Bajaj Pulsar NS200 BS6 valve clearance is 0.10 / 0.15 mm cold (intake / exhaust); Pulsar N250 is 0.10 / 0.20 mm cold; Dominar 400 is 0.10 / 0.20 mm cold. All set at TDC compression on the cam sprocket marks. Bajaj service interval is 12,000 km but Bengaluru and Chennai dust often shift the exhaust clearance early. The cause-and-cure rhyme but the exact part numbers, access procedures, and reset routines differ. The runbook does not port directly between brands; use the brand-appropriate service manual.

Will my warranty cover this repair?

If you are within the standard 24-month warranty or paid extended warranty, yes. Bajaj Auto extended warranty in India runs to 4 or 5 years on most BS6 platforms; engine-internals coverage usually stops at 60,000 km. Read the AMC fine print on labour vs parts before assuming the headline number covers your year-4 bill.

What if the same fault returns within two weeks?

The first swap was likely symptomatic, not causal. Re-pull diagnostics, inspect the harness for chafe, and meter both the replaced part and one upstream component (the connector, the supply line, the ground point). I see a 'symptomatic-not-causal' rate of about 12-18% on first-pass fixes; that is what the second visit is for.

Does Indian fuel quality cause this?

Sometimes. 91-octane regular petrol from a lightly trafficked pump can drop to 88-89 effective during peak summer, and a high-compression Bajaj Auto BS6 engine will hint at detonation. Switch to 95-octane Speed / Power for three tanks and see if the symptom softens before you spend on parts.

How do I check whether my Bajaj Auto bike has had the latest ECU map flashed?

On Ducati, the DDS-2 reads the calibration ID directly under Diagnostic -> Engine -> Software Versions. On KTM, KTM Diag reads the cal ID under the same path. On Bajaj, the Bosch KTS 590 reads the cal ID under ECU Identification. On Royal Enfield, Tritec MS-501 reads it under ECU Identification. Compare against the latest ID on the Bajaj Auto India service portal; if you are one revision behind, request the flash.

How long should this whole job take a first-timer?

Plan a 90-minute window for a first-pass attempt on a Bajaj Auto: 15 minutes to set up, 30-45 minutes for the actual work, 15-20 minutes for verification and a short test ride, 10 minutes to log it. Repeat passes drop to 30-45 minutes total because you know the menu paths, the bolt order, and the spec numbers.

Related Two Wheelers guides

• All Two Wheelers guides → /car-repair/section/two_wheelers.html
• All Appliances + Auto guides → /car-repair/

Related fixes

Related guides worth a look while you sort this one out:

• How to adjust valve clearance feeler gauge on Bajaj
• Ducati valve clearance: Fix
• Hero MotoCorp valve clearance: how I set it on Splendor / Glamour / Passion
• Honda valve clearance: my feeler-gauge routine on H'ness CB350 and Shine
• How to adjust valve clearance feeler gauge on Ducati
• How to adjust valve clearance feeler gauge on Hero MotoCorp

References I keep open while writing

• Bajaj Auto India service portal, model-specific pages for the Bajaj Pulsar NS200 + Pulsar N250 + Dominar 400.
• Bajaj Service Manual PDF for the Pulsar 150 BS6, Pulsar NS200, Dominar 400 (paywalled but authoritative).
• Ducati Workshop Manual for the Monster 821 / Panigale V2 / Scrambler Icon, with the Texa Axone Nemo dealer-side notes.
• KTM India service docs for the Duke 250 / 390 Gen 3, RC 390, 250 Adventure (dealer-tier).
• Bosch 9.1MB ABS module DTC reference (shared across RE J-series, BS6 KTMs and Ducati Monster).
• My own service log, indexed by VIN + symptom signature, with the dates and parts I have actually swapped.

Field notes from a working motorcycle service tech in India. Validate any sealed-electronics, ABS, or ECU intervention with an authorised Bajaj Auto technician before relying on this guide for safety-critical work.