Yamaha FZ 25: Common Problems, Fixes & Ownership Guide (2026)

Overview

The Yamaha FZ 25 brings 249cc displacement to Bangladesh at Tk 3,95,000 — occupying a segment with few competitors. The air-cooled SOHC single produces around 20.8 PS and 20 Nm, packaged in a street-naked body style that is comfortable for daily commuting and capable enough for occasional highway runs. It shares its engine lineage with Yamaha's international 250 models, giving it a well-documented engineering heritage.

In Bangladesh the FZ 25 is popular with riders who find the 150cc bikes underpowered for highway riding but are not yet ready for the complexity and running costs of a liquid-cooled 300cc or above. ACI Motors provides official support and spare parts.

The large Indian owner community provides extensive long-term data through forums like Team-BHP, ZigWheels, and xBhp — and the issues they flag are consistently relevant for Bangladeshi owners riding similar roads in similar conditions.

Common problems & fixes

• Engine tappet noise: This is the most widely reported concern on the FZ 25. Owners on ZigWheels and xBhp forums describe a metallic ticking noise that can appear from as early as 5,000 km. Fix: have valve clearances checked at the 12,000 km service; use only 10W-40 MA oil and do not extend oil changes beyond 3,000 km. The noise is often reduced significantly after a fresh oil change and valve adjustment.
• Hot start difficulty: Multiple owners report 2–3 attempts required to restart a warm engine, particularly in Dhaka's summer heat. The fuel injection system on the FZ 25 can be slow to pressurise correctly when hot. Fix: when restarting a warm engine, hold the starter for 1–2 seconds without blipping the throttle — the FI primes itself. A fuel injector clean at 15,000 km helps.
• Vibration above 85 km/h: The single-cylinder 249cc engine sends noticeable vibrations through the handlebar and footpegs at speeds above 85 kmph. This is inherent to the air-cooled single design — there is no fix, but it is worth understanding if you plan regular highway use. Engine mounts checked for tightness at every service minimise transferred vibration.
• Weak headlight: Owner reviews on ZigWheels are consistent — the FZ 25's high beam is inadequate above 70–75 kmph on dark roads. Fix: many Bangladeshi owners have upgraded to an LED bulb insert; this is a cheap and effective fix.
• Poor quality plastics: The tail section and side panel plastics are noticeably below the quality of the metal components. Panel clips loosen after 2–3 years on rough roads. Fix: replace stock plastic clips with metal screws at panel joints — a quick job for any local mechanic.

Maintenance & service tips (Bangladesh)

• Engine oil change at 3,000 km maximum; the air-cooled 249cc single in Bangladesh traffic temperatures degrades oil noticeably faster than the manual's 6,000 km interval.
• Valve clearance check at every 12,000 km is important — the tappet noise issue is directly linked to clearance going out of spec. Do not skip this step.
• Chain and sprocket are subject to faster wear than on lighter 150cc bikes due to the extra torque. Lube every 400 km in monsoon and inspect the sprocket teeth every 6,000 km.
• Brake pads should be inspected every 8,000 km; the single front disc is effective but wears faster in the sand and mud common on Bangladesh roads.
• The air filter on the FZ 25 is a large element; clean at every second service and replace annually if riding daily in Dhaka's dusty air.
• Keep the throttle cable and lever mechanism clean and lubricated — Bangladesh's humidity can cause minor corrosion at cable ends.

Is it worth buying in Bangladesh?

For the rider who regularly rides between cities — Dhaka to Comilla, or Chittagong to Cox's Bazar — the FZ 25 makes a strong case for itself. The 249cc engine is relaxed at 80 kmph, fuel economy of 32–38 kmpl is reasonable for the displacement, and the upright riding position handles long hours better than any 150cc sports bike.

The known issues are manageable: tappet noise is the main concern, and attentive oil maintenance keeps it in check. The vibrations above 85 kmph are simply a characteristic to accept rather than fight.

Competition in the 250cc naked class is thin in Bangladesh compared to India. If you want 250cc naked performance with Yamaha's service network behind you, this is currently the main option. Buy from an authorised dealer and stick to the valve check schedule — these two steps resolve the vast majority of FZ 25 ownership complaints.