Suzuki Burgman 400 - Master Maintenance & Torque Guide

Field note: The AN400 engine holds 1.9L during routine drains and 2.0L when changing the 16510-25C00 filter. Suzuki's oil inspection window requires checking with the scooter upright on center stand. Insufficient oil capacity risks high-RPM starvation of the SOHC cam lobes, while overfilling forces oil into the airbox via the breather tube during sustained highway operation.

Field note: Torque caliper pins to 22 Nm evenly to prevent binding on the integrated parking brake mechanism.

Field note: 105 Nm is one of the highest variator nut torques in this catalog, and under-torquing it is the leading cause of variator nut back-off on the Burgman 400.

Field note: As with the Burgman 200, do not exceed 11 Nm on this aluminum head.

Field note: Since this stator sits in the oil-splash zone of the crankcase, any debris or thread sealant residue left behind during installation will circulate through the entire lubrication system. Clean the mounting bolts and threads thoroughly, torque to exactly 11 Nm, and never use non-approved thread sealant that could break down and contaminate the oil.

Field note: Because the stator sits in the same oil-splash crankcase environment as the crankshaft, any debris from an incorrectly installed piston pin clip circulates directly through the charging system windings. The clip's opening gap must face 90° to piston travel, never fore-or-aft — a backward clip compresses under load until it ejects into the crankcase, and the freed pin gouges the cylinder wall on the next stroke. Use only new clips and confirm full seating by feel.

Field note: Suzuki's painted plastic body panels become progressively brittle at the mounting tabs after roughly three years of continuous UV exposure. Never use an impact driver on body screws, and apply silicone grease (never petroleum-based) to rubber grommets before removal so panels flex free without cracking.