Learn to Repair & Maintain

Tools needed: Drain pan, socket wrench (typically 12mm or 17mm), new crush washer, funnel, and manufacturer-specified oil.

Procedure overview: Warm the engine for 2–3 minutes to help oil flow freely, then shut off. Position the drain pan, remove the drain plug, and allow oil to drain fully (5–10 minutes). Replace the crush washer — never reuse a deformed one. Reinstall the drain plug to torque spec. Remove the oil fill cap, add the correct quantity of oil, then check the level via sight glass or dipstick. Run the engine briefly and inspect for leaks.

⚠ Always dispose of used oil at a certified recycling facility.

Why it matters: A chain that's too tight puts stress on bearings and the countershaft sprocket. Too loose and it can jump the sprocket or slap the swingarm.

Procedure overview: Check the manufacturer's slack specification (commonly 20–30mm measured at the chain's tightest point, with the bike on the side stand). Loosen the axle nut, then adjust both chain adjusters in equal increments, checking alignment marks on both sides. Snug the axle nut, recheck slack, then torque the axle nut to spec. Lubricate the chain after adjustment.

Reading the plug: Tan or gray deposits indicate healthy combustion. Black, sooty deposits point to a rich mixture. White or blistered insulator suggests a lean condition or overheating. Oil fouling indicates ring or seal wear.

Replacement procedure: Allow the engine to cool fully. Remove the plug cap, then use the correct spark plug socket (usually 16mm or 18mm). Inspect the gap with a feeler gauge and adjust if needed. Apply a small amount of anti-seize to threads, install finger-tight, then torque to spec (typically 10–15 Nm for aluminum heads).

When to bleed: Any time brake feel becomes spongy, after opening the hydraulic system, or per manufacturer interval (typically every 1–2 years as fluid absorbs moisture over time).

Procedure overview: Clean around the reservoir cap before opening to prevent contamination. Attach a clear bleed hose to the caliper bleeder valve. Open the valve a quarter-turn, squeeze the lever slowly, then close the valve before releasing the lever. Repeat, maintaining fluid level in the reservoir. Continue until no air bubbles appear in the bleed hose. Top off to the maximum mark and replace the reservoir cap.

Types of filters: Paper elements are replaced, never washed. Foam and cotton gauze filters can be cleaned and re-oiled per manufacturer instructions. Inspect the filter housing for cracks or debris that could bypass the filter element.

Service interval: Every 6,000–12,000 miles under normal conditions; more frequently in dusty environments. A clogged filter will noticeably reduce throttle response and fuel economy before you see any other symptoms.